CA, Southern California, 20070715
Mt Wilson, mostly many lichens
Trip from Chantry flats up Upper Winter Creek Trail to Mt. Wilson, then back via Rim Trail and Newcomb's Pass. Particular emphasis on macrolichens.
First lichens on the trail were on exposed rocks (relatively common) and shady oaks (very rare) Rocks:
Chrysothrix
Lepraria
Xanthoparmelia (all fertile)
Cladonia (low bleached dried-up cupped ones)
Lecanora (a green lobate one)
Dimelaena (and other grey crusts)
Oaks:
Chrysothrix
Lepraria
Candelaria
Physconia (mostly P. isidiigera, but soon some Physcia as well)
This was in a shady rock nook (N slope):
| | THAL | | | squam | | dk grey, thickish, sl browned marg, smooth, finely crenulate to div, curled up, no sored, whitish bel |
| podetia | | cupped, to 10x1mm, cups to 4mm wide, covered deep in large corticate granules and even lobules, usually some squam on st, pyc dk brown |
P+o/r |
Lepraria []
Location 1
Upper Winter Creek Trail before jct w trail from valley floor; N-facing
exposed granitic rocks on bank ab trail.
| | GEN | | subfruticose minute lichen, on rock and other lichens |
| | THAL | | lemon yell, v min coralloid to lobate, breaking up into corticate granules, lower cortex seems to be present w min white rhiz though ver hard to see even at 30x |
Lecanora
Lecanora muralis muralis [] [voucher]
| | GEN | | crustose lobate lichen, on granite |
| | THAL | | min lobate (to 1mm wide), greenish, shin, smooth, sl overlapping (placodioid?), K-, KC+ faint gold, C- |
| | MED | | white, K-, KC-, C- except for a few dots of K+r brief |
| | APO | | pinkish, smooth to erose marg, shiny, epi & hym & hypo clear, v thick hypo, paraphyses simple |
| | SPORE | | 10-13x5-6um, clear, oblong, 1 cell, 8 per ascus |
Xanthoparmelia californica [] [voucher]
| | THAL | | greenish, shiny, smooth to min black-pitted in center, v loose and imbr, deeply cren, mostly 1-1.5mm wide, no soredia or isidia or other, pale brown bel, K-, KC+y, C- |
| | MED | | white, dense, thick, K+y, KC-, C- |
| | APO | | few, to 5-6mm wide, cupped, marg curled in, dk brown |
Xanthoparmelia lineola [] [voucher]
| | THAL | | v pale greenish, shiny, min wrinkly to ugly brown roughened in older parts, flat adnate lobes, mostly 3-4mm wide, brown edges, lt-med brown bel, no soredia etc, K-, C-, KC- |
| | MED | | whitish, K+y-r, C-, KC- |
| | APO | | abundant, to 4-5mm, broad, often cupped w tightly inrolled marg |
grey crust
| | GEN | | crust lichen, on granite |
| | THAL | | grey to dk grey, verruculose, dull, K-, C-, KC-, some black pyc inset in weak pimples |
| | MED | | whitish, dense, thick, K- (or v weak gold), C-, KC- |
| | SPORE | | | conidia | | 12-16x1um or narrower, rod, clear |
|
Location 2
Upper Winter Creek Trail before jct w trail from valley floor; N slope;
by trail, trunk base and under leaning bits of oak; open oak forest.
| | THAL | | lemon yell to green-yell, almost entirely broken into granules, few bits of intact cortex surrounding raised pimple-like yell-orange pycnidia |
| | GEN | | min foliose, on oak bark |
| | THAL | | lobes 0.5-1mm wide, dk grey, dull, maculate, pale bel, sh cilia and simple rhiz, soredia in rounded soralia initiating on margins and terminally but looking laminal in age, fine to finely granular, K- |
Physconia isidiigera []
| | GEN | | min foliose, on oak bark |
| | THAL | | appress, med-dk grey mottled with olive-green, heavily white pruinose on tips, lobes 1-1.5mm wide, pale bel at least near tips, rhiz unbr long pointy pale, soredia granular along and just under marg in thin linear strips, K-, KC-, C- |
Looks
exactly like
Physconia isidiigera except for pale undersurface and unbr pale rhiz. Must just be because it's young.
| | THAL | | grey-green, v min squam/areolate/lumpy, even color |
| | APO | | lecideine/biatorine, black, disk, superficial but in sl depressions, epi brown, hymen clear and rel thin, asci w uniform thick tips and sides |
| | SPORE | | brown, ellip, smooth, 2 cell, 12-15x7-8um, 8 per ascus, sl bent, v sl constricted at septum, round locules |
Location 3
Upper Winter Creek Trail before jct w trail from valley floor; N slope;
shady rock/moss on trail bank. Two Cladonia.
| | GEN | | cladonia, on mossy rock |
| | THAL | | | squam | | grey, smooth and even, some pruinose?, white bel, no sored, curled up |
| pod | | cupped, to 8x1mm, cups to 3mm wide (mostly 2mm), fairly even and entire but some mangled a bit, grey-green, white med exposed on some where damaged, sorediate to granular to almost phyllidioid esp bel, cups finely sorediate inside and out |
P+o/r |
| | GEN | | cladonia, on mossy rock |
| | THAL | | | squam | | disappearing?, 2-3mm long, deeply div, white bel, greyish, no sored |
| pod | | mostly uncupped, corticate near base, sorediate nearly whole length from fine at top to granular to schizidioid bel, proliferating from rims of occ v narr cup-like structures, to 50mm or more all told |
P+o/r |
Location 4
Upper Winter Creek Trail; N slope; shady rock/moss on trail bank; just
before slope down to jct with trail from valley floor.
Flavopunctelia flaventior [] [voucher]
| | THAL | | prom white dotted pseudocyphellae, KC+y |
Physconia isidiigera []
| | THAL | | olive-grey, lobes splayed up from 1-2mm wide, edges curled up, black squarrose rhiz conspic, white priuna on tips, white cortex bel at least near tips, rel sp irreg granular soredia along marg, lobulate in center |
Can't be
P. isidiomuscigena: lobes too narrow and no laminal sorsidia.
Xanthoparmelia mexicana [] [voucher]
| | THAL | | adnate, lobes to 4mm wide, flat, shiny, pale green, low lumpy to globose isidia |
Location 5
About 0.75mi up from jct; open oak forest; trunk of oak; E slope; sunward
side; vert face of v old oak.
Physconia isidiigera []
Location 6
Past 1st jct on ridge, past 1st switchback through sunny chaparral; on
base of v old charred doug fir; downhill/overhanging side; open mixed forest; NE slope.
Hypocenomyce scalaris
I collected a bit from a couple places. It was growing abundantly on the base of nearly every doug fir from the first jct on the ridge to the top and on to Newcomb's Pass. Considering I've never seen it anywhere else, I found this a bit remarkable to say the least.
| | GEN | | squamulose lichen, on base of doug firs where most moisture will be, esp scorched bark |
| | THAL | | olive brown to tan, 0.5-2mm, roundish, adnate to raised at marg, finely sorediate underneath esp under marg, no cortex bel |
| | ALG | | green, thick and relatively diffuse |
Letharia vulpina []
Just eye-balled: clearly isidiate/sorediate. All small to 2-3cm.
Location 7
Just up trail from Location 6; just before clearing; open scrub oak; E slope.
| | THAL | | dk olive-green, verruculose/rimose, edge indistinct |
| | APO | | black, lecanorine, disks mostly convex often w little globular growths in the center, brown epi, thick cont layer of alg below, rims verrucose to beaded, disk black, to 1mm wide, abundant |
| | SPORE | | 15-22x10-12um, dark, 2 cell, ellip, bent, sl constrict at sept, sept thin, round bubbles inside each locule |
Not sure how to diagnose spore type; could be:
R. laevigata,
R. herrei, or
R. santae-monicae (after removing ones out of range according to
Nash).
R. herrei has best spore dimensions, and makes a point of the convex apothecial disks like mine has. What is an erumpent apothecial disk?
| | GEN | | foliose lichen, on oak bark |
| | THAL | | dk olive, smooth to a bit wrinkled, even colored |
| | GEN | | crustose lichen, on oak bark |
| | THAL | | whitish greyish, verruculose |
| | APO | | big with thick raised thalline marg, epi and medulla C+pink, UV- |
Physconia americana []
| | GEN | | foliose lichen, on oak bark |
| | THAL | | lt to dk grey, pruinose esp near tips, K-, abundant black v squarrose rhiz bel, whitish at tips to brown bel |
| | APO | | abundant, one or two w some lobulae |
Physconia californica []
| | GEN | | foliose lichen, on oak bark |
| | THAL | | lt to dk grey, epruinose, K-, abundant pale rhiz bel, some rhiz sl squarrose (but all thick and pointy like the typical Physconia rhizines), white everywhere I can see bel, abundantly lobulate all over |
I guess I still harbor some doubts that this is just a young
P. americana... except that I would expect lobulae to become more abundant with age, not less.
Location 8
In clearing just past Location 7; on dead chaparral ab trail; E slope;
exposed.
| | THAL | | mottled lt grey, lobes splaying out to 2-3mm wide, pale bel w abundant pale rhiz and rare black short cilia, no pruina whatsoever, K+y, black pycnidia in bumps common |
| | APO | | only one or two, black disk, still young |
Only other possibility is
P. aipolia but med is distinctly K- P-.
Physconia californica []
| | THAL | | dk brown, heavily white pruinose on tips, v wrinkled/rugose/mounded all over, very lobulate, one apothecium, v pale bel to brownish in center, abundant rhiz black and mostly squarrose |
Pale undersurface, rare apothecia, and abundant lobulae convince me it is
P. californica not
P. americana.
Location 9
More open scrub oak; SE slope; not far from Location 8.
| | GEN | | foliose lichen, on oak bark |
| | THAL | | appress, wrinkled, dk olive-green, even color, shiny, black pycnidia, some orbicular lobulae along marg |
| | APO | | sev, brown disk, cupped, inrolled marg |
| | GEN | | foliose lichen, on oak bark |
| | THAL | | appress, lobes 2-4mm wide, med grey, even color, smooth, sl shiny, black pycnidia common, brown bel w abundant short simple dk rhiz, K+y |
| | APO | | common, red-brown disk, thick inrolled thalline marg, to 2mm wide, rather raised |
Physconia americana []
| | GEN | | foliose lichen, on oak bark |
| | THAL | | appress, lobes 1-2mm wide, lt to med grey, heavily white pruinose, lobulate, whitish bel to tan in center, abundant v squarrose black rhiz |
| | APO | | abundant, v white pruinose, erose to lobulate marg |
Physconia californica []
| | GEN | | foliose lichen, on oak bark |
| | THAL | | looser and more imbr, lobes 1-2mm wide, med to dk grey, epruinose, abundantly lobulate, whitish bel, pale to dk rhiz bel mostly but not all squarrose |
| | APO | | common, not pruinose, heavily lobulate marg |
Physconia perisidiosa []
| | GEN | | foliose lichen, on oak bark |
| | THAL | | loose, ends turned up, med to dk grey, white pruinose at tips, lobes 1-1.5mm wide, ecorticate bel at tips, black squarrose rhiz, granular soredia in lips under lobe tips |
Location 10
Granite under doug fir; shady; E Slope.
Candelaria concolor []
| | GEN | | foliose lichen, on granite |
| | THAL | | ascending inflated/hooded lobes, lt grey, smooth, even color, ~1mm wide, cilia common, white bel, K+y |
| | GEN | | foliose lichen, on granite |
| | THAL | | tips ascending but flat, med grey, even color, ~0.5mm wide but widening at tips, cilia uncommon but present, white bel, granular greenish soredia under lobe tips, K+y weak |
The cilia imply
P. adscendens or
P. tenellula by
Nash, however I now realize that most
Physcia will show cilia to some degree. However it poses additional problems by being medulla K- while on bark instead of rock. Both
P. dubia and
P. dimidiata belong on rock. The former matches best, I guess.
Physconia isidiigera []
| | GEN | | foliose lichen, on granite |
| | THAL | | adnate, lobes to 2mm wide, widening at tips, white pruinose at tips, dimpled/concave, breaking up into soredia inside, med to brownish dk grey, tan bel, black abundant often squarrose rhiz, granular soredia originating on margs |
Location 11
Granite; full sun; in small clearing in doug fir open forest; flat to
sloped top face of rock; S/SE slope. Good view!
Lecanora mellea []
| | GEN | | crustose lichen, on granite |
| | THAL | | lobate, rich brown, shiny, lobes ~1mm wide, convex, cortex wraps around tips to a little bit underneath |
| | MED | | white, dense, K-, C-, KC- |
| | APO | | lecanorine, superficial, to ~1mm, rims shiny, smooth to lobate, disk reddish brown| paraphyses | | ~3mm wide, not thickened, unbr, rel untangled |
epi brownish, hym clear, continuous algal layer |
| | SPORE | | 8 per ascus, clear, 1 cell, ellip, 11-14x6-7um, smooth |
Location 12
Granite/moss; E slope; same forest; just before benches and jct w Mt.
Wilson Trail coming up from Sierra Madre.
| | GEN | | foliose lichen, on granite |
| | THAL | | lead-grey, strong white retic pseudocyphellae, brown bel w short simple rhiz right to edge, loosely adnate, branched cyl isidia all over surface except lobe tips, K+y |
| | MED | | white, K+y-r, C+y weak |
Physconia isidiigera []
Xanthoparmelia coloradoensis [] [voucher]
| | GEN | | foliose lichen, on granite |
| | THAL | | loosely adnate, lobes to 4-5mm, even smooth shin pale yellish-green, pale brown bel, some short black cilia(!), v mounded and imbr, abundant black pycnidia (hard to find spot without any to test medulla!), lots of small irreg lobulae on lobe margins and occ tips, some black warts that might've been aborted apothecia?, no soredia etc |
Location 13
Granite; under overhang; shady; scrub oak forest; SW slope.
| | THAL | | v rugose and lobulate esp on apothecial marg but lobe tips flat and smooth, brown bel |
| | THAL | | smoothish, brown, shiny, black star-shaped spots abundant on one thallus, black bel with min rough-pimpled texture |
| | APO | | black, angular, gyrose |
Location 14
Base of doug fir; S slope; E face; shady; just before SB to toll road.
| | THAL | | ruffled, sharply retic ridged ab, veined bel, lead-gray ab, black to brown w irref white regions at marg bel shiny bel, no rhiz visible, soredia in irreg masses mostly along marg though some on surface on warts, K+y, C-, KC- |
Only took half of the already depauperate specimen, since I could find no other specimens nearby. (But too interesting to leave it to be trampled upon by the heavy traffic that passed within inches of it.)
Location 15
Oaks ab road jct on Mt Harvard saddle; SW slope.
| | GEN | | min foliose lichen, on oak bark |
| | THAL | | pale grey, smooth even color, almost no white pruina, lobes convex back from upturned abruptly widened tips, tips disintegrating into coarse soredia originating below, short cilia common, pale bel |
| | APO | | many, to 0.7mm, raised to sl stip, prom v pruinose even rims, disk brown and v heavily white pruinose |
Physconia californica []
| | GEN | | min foliose lichen, on oak bark |
| | THAL | | pale to med gray, heavily white pruinose esp near tips, wrinkled/folded, tightly appressed, folding up into huge isidia-like bumpy columns in center (lobulae?), white bel w pale simple and black squarrose rhiz, K- |
| | APO | | none or a few small ones that are being overgrown by towering lobules |
| | GEN | | min foliose lichen, on oak bark |
| | THAL | | pale grey, heavily white pruinose all over, softly wrinkled/folded all over, tightly appressed, white bel w pale simple and black squarrose rhiz |
This looks totally different than either the other
P. americana or
P. californica, yet without isidia or soredia it can be nothing else according to
Nash. I've stuffed it in the same envelope as the other
P. c., because it's so easy to tell apart. I've classified both as
P. c. because of the pure white underside, the presence of a fair number of simple white rhiz near edges, and lack of apothecia.
Physconia enteroxantha []
| | GEN | | min foliose lichen, on oak bark |
| | THAL | | med to dk gray, white pruinose near tips, v dk bel, black squarrose rhiz, marg thick soralia, soredia cottony and yellish, cor K-, soredia K+y |
Physconia perisidiosa []
| | GEN | | min foliose lichen, on oak bark |
| | THAL | | lt to dk gray, d white pruinose esp near tips, pale bel to white and ecorticate near tips, short black v squarrose rhiz abundant, soredia fine under margs and some tips |
| | GEN | | min foliose lichen, on oak bark |
| | THAL | | orange, K+r, delicate, diffuse, lobes convex to 0.5mm wide but tips widening to 1mm and flattened to recurve up, tips broadly rounded to trunc, fine soredia abundant on underside of upturned lobes, white rhiz fairly abundant bel but not visible from ab for the most part, dk red-orange prom pycnidia here and there |
| | SPORE | | | conidia | | 4.5-5x1.2um, oblong w abruptly rounded ends bacilliform |
|
Def not
X. ulophyllodes, which does not have prom pycnidia. According to
Nash X. oregana is the common one in the area, but the lobes are def convex not concave (at least back from the upturned tips), and the tips are def wider than 0.4mm. I'm not sure I'd be able to tell ellipsoid from bacilliform, but they sure all look too abruptly rounded to be ellipsoid to me, and they are a hair longer than they should be in
X. oregana.
X. fulva prominant flat-convex trunc, 0.2-0.6(1.0)mm, recurved
X. oregana either flat-concave round, 0.1-0.4mm
X. ulophyllodes ~immersed flat-convex either, 0.3-0.9mm
Location 15b
Oak by water faucet by main parking area on top; N face; trunk. Also
rock wall few feet to N. Caloplaca on mortar probably the only calcareous rock around.
Caloplaca ignea? []
Just going by the (very bad) photo:
| | GEN | | crust/foliose lichen, on cement in wall |
| | THAL | | orange-red, lobate, lobes ~1mm wide, convex, smooth, appress |
| | APO | | to ~3mm wide, rims smooth to sl cren, disks redder, sl flexuous |
It
looks foliose because of some lobes apprarently not attached to mortar in the photo. It does not look like
Caloplaca trachyphylla at all. It seems impossible to tell whether it's
C. ignea or
Xanthoria elegans from the photo.
| | THAL | | v thin to endophloeic, whitish, K-, C-, P- |
| | APO | | disk dk rust-brown & pruinose & to 0.6mm or more, thin to thick erose marg, hymen 75um & clear, epi brownish 20um, algae thick 75um, cortex 60um at base to almost nonexistent at top, crystals to 30um under alg bel hymenium |
| | SPORE | | 8-11x4-6um, clear, ellip, bubbly, 1 cell, smooth, 8 per ascus |
Since I know little about crystals still, either in the amphithecium or the epihymenium, I did a binary search of all branches, ruling out branches and leaves only by other characteristics. This leaves me with:
L. hagenii Spores a bit too long.
L. hybocarpa Thallus better developed, apo wider and epruinose, spores way too big.
L. laxa Thallus better developed, amphithecial cortex less wide.
L. wetmorei Entire rims, wider amphithecial cortex, larger apothecia.
These look rather familliar from the L. hagenii I studied in urban Pasadena. L. hagenii has the fewest objections. (Actually L. hybocarpa failed in the key, but I kept it as a "control" to make sure ones that marginally failed the key really were much farther from the ones that didn't fail.
| | GEN | | foliose lichen, on oak bark |
| | THAL | | orange, loosely adnate, ruffled, lobes flat less than 1mm wide, tips upturned and much expanded, abundant fine soredia under lobes clearly originating between two cortices, some white short rhiz present |
| | APO | | many, to 1mm wide, raised to stip, marg prom, cupped and folded up, disks oranger |
Curtis looked at this for me, along with the Lecanora hagenii and Xanthomendoza fallax. He's convinced it's a new species, something about sorediate/isidiate Rinodina being unusual.
Location 16
Rocks; exposed; N slope and face; Rim Trail near top. Few locations
within a dozen yards.
Candelariella vitellina []
No specimen. Going by photo and ranges in Nash, leaving only two, both common:
C. rosulans thick rims, round to lobate squamules
C. vitellina thin to thick rims, minute indistinct lobes <---
Dermatocarpon americanum [] [voucher]
| | GEN | | umbilicate lichen, on granite |
| | THAL | | crisped down-turned marg, heavily white pruinose, fairly smooth overall with some min cracks, many immersed round structures, marg often w lobules, black to brown bel and rough-papillose, no rhiz whatsoever on any of three well-developed specimens(!), no soredia etc at all |
| | MED | | white, reacts strongly to Lugol's but clears a bit when add C |
Oops, this is not
Umbilicaria! Not sure how to interpret the Lugol's & C reaction on medulla, but according to maps in
Nash, it can only be either
D. americanum or
D. reticulatum, yet no matter how I characterize the lower surface, "farinose" is not a word I'd use.
Trapeliopsis steppica
| | GEN | | crustose lichen, on moss on exposed granite |
| | THAL | | gently lumpy, rough-textured dull granulose, tan, blackish fine soredia born under a few upturned margs, K+y, C+r |
| | MED | | white, K+ rose pink faint, KC+violet briefly |
| | GEN | | crust lichen, on granite |
| | THAL | | white to v sl greenish, verruculose, to 1mm thick, K+y, C- |
| | MED | | white, thick, dense, K-, C- |
| | APO | | clumped, lecanorine, rims v beaded almost lobulate, disk red-brown to black to 1.2mm wide, convex to flexuous, rims a bit darker than thal, v constricted bel, epi brown & 15um, hymen clear & 75um, subhym clear & 100-150um, alg discont under, amph cortex even 25um, crystals from 15-30um in hypo, alg filling medulla or marg, K-, C- |
| | SPORE | | 8 per ascus, clear, ellip, smooth, 1 cell, 12-15(17)x7-8um, bubbly |
As usual, not sure of crystals, leaving these four candidates:
L. campestris small cry
L. argentea larg cry + no epi cry
L. cenisia larg cry + epi cry + not subsquam
L. galactiniza larg cry + epi cry + subsquam
First has sess apo and smooth rims; second has sess apo; third has basally thickened amphithecial cortex and sl pruinose disks; forth is yellish, bullate, only sl constricted non-black apo, etc. Second and forth don't belong in sCA, anyway. Leaves number three as only plausible candidate.
Lecanora muralis muralis [] [voucher]
Just assumed it was same as the one from Location 1.
| | THAL | | lt brown-grey, smooth, shiny, areolate, thin, cortex about 20um, K-, C-, KC- |
| | MED | | white, K-, C+pink, KC+pink, I- |
| | APO | | lecideine, sunken flush w thallus, rim smooth but thin and a bit dker than thallus, no pruina, alg not cont bel and none any in marg, epi greenish brown & 20-30um, hymen clear to faint brownish esp bel & ~50um, subhym brownish & v thick > 100um, amp cor v thin and disappearing (< 5um?), tiny brown crystals in amp sol in K & large clear crystals insol in K (to 50um), granules in epi, hymen I+ |
| | SPORE | | 8 per ascus, clear, ellip, smooth, bubbly, 1 cell, 12-14x5-6um |
Tough one to key since I don't know how to observe ascus details yet. Tried
Lecanora,
Lecidella,
Lecidea and a number of other small obscure ones I've never heard of and which don't occur in our area. Two
Lecidea match very well:
L. fuscoatra and
L. mannii. I'm concerned about hypothecium pigmentation, as it is neither unpigmented nor dark. It seems the apothecia are strongly constricted bel
something I noticed but dismissed as they were apparently immersed, when in fact they just occur between areoles.
L. lobificans soredia too small
L. caesioalba not here
L. incana not this high (and soredia farinose)
L. rigidula not here
L. diffusa on moss on rocky cliffs in sCA, fluffy globose leprose
L. vouauxii not here
Letharia vulpina []
No collection, just visually inspected.
Very few are non-isidiate, so I collected one.
| | THAL | | many pycnidia-pointed fibrils arising from apothecial margins, no soredia etc |
| | GEN | | foliose lichen, on granite |
| | THAL | | lt grey, loosely adnate, lobes to 1mm wide, v cren, white pruinose esp near tips, tan bel to white at tips, many pale rhiz, K+y |
| | APO | | lecanorine, raised to stip, rims v prom and inrolled, disk black and concave, often pruinose, to 2mm wide, epi brownish, hymen clear |
| | SPORE | | 8 per ascus, football, grey, 12-15x5-6um, smooth, 2 cell, v constricted at septum |
| | GEN | | min foliose lichen, on granite |
| | THAL | | lt to med grey, white maculate, dull, wrinkled, closely adnate, lobes 2-3mm wide, tan bel, powdery soredia in lip-shaped soralia along or under marg, K+y |
Lousy specimen.
| | GEN | | min foliose lichen, on granite |
| | THAL | | lt to med grey, rough but shiny, lobes v narrow and ascending to form a cushion, to 0.5mm wide but longer, pale bel w lots of rhiz and quite a few cilia, lobulate-like growths form at and under marg near tips that go on to become v coarse granular soredia, soredia sparse, K+y |
I'm tired of the lousy key in
Nash. The stupid cilia thing is useless. Why isn't
P. subtilis covered in
Nash?
Rhizocarpon disporum []
Hmmmm... I thought I'd collected this, but since the thing I took a picture of would have required a chisel, I took a bit that was flaking off from around the corner. However, looking at the two up close (the one I have and the one I took a picture of), I see they are different. I will continue to assume this is a Rhizocarpon, although obviously I can't verify this. It does look exactly like one, though... (The other one turns out to be Lecidea mannii.) Going by photo and ranges in Nash gives the following four:
R. disporum siliceous <--
R. eupetraeum acidic
R. geminatum cold/wet
R. grande acidic
Rhizocarpon geographicum [] [voucher]
| | GEN | | crust lichen, on granite |
| | THAL | | lemon yell, rimose-areolate, smooth to powdery surface, convex, up to 1mm thick, cortex thick |
| | APO | | immersed, black, hymen to 200um & clear, epi brownish & 25-35um, hypo black-brown & v thick, paraphyses matted together |
| | SPORE | | 8 per ascus, muriform, 8-12 cells?, football, ~30x15um, grey to darker |
Rhizoplaca melanophthalma []
Failed to find my specimen did I leave it on the rock?? Going by distinctly greenish thallus and apothecial disks, as seen in photos.
Xanthoparmelia subdecipiens []
| | THAL | | loose, contorted, lobes to 3mm wide, pale green, somewhat shiny, "messy" with black marks and bumps and pits, black pycnidia submersed common, brown bel |
| | APO | | many, large, cupped, brown, curled in |
| | SPORE | | 9-10x6-7um, clear, 1 cell, ellip, bubbly| conidia | | 7-8x0.75um, rod tapered at both ends, clear |
|
Chemistry leaves 5 candidates; spores and conidia rule out all but two
X. subdecipiens and
X. domokosioides. The former is a hair too big, the latter a hair too small.
X. domokosioides doesn't belong in the US, only rarely has pycnidia, and is tightly adnate to adnate.
X. s. matches well across the board.
Species Spores Conidia
X. subdecipiens 10-12x6-7 5-6x1.0
X. domokosioides 8-9x5-6 5-7x0.7
X. tucsonensis 10-12x4-6 6-8x0.5
X. montanensis 9-11x5-6 5-7x0.5
X. oleosa 7-8x4-5 5-6x0.5
Location 17
Rock; shady; in oak forest; N slope.
Leptochidium albociliatum [] [voucher]
Location 18
Rock; shady; in oak forest; N slope.
| | GEN | | foliose lichen, on moss on granite |
| | THAL | | loosely att to ascend, lobes flat 2-4mm wide, truncate, med grey shiny w conspic white pseudocyphellae, black bel w abundant black rhiz, soredia originating on pseudocyphellae, K+y |
Location 19
Rock; semi-opening; in oak forest; N slope.
| | GEN | | min foliose lichen, on granite |
| | THAL | | loosely adnate, whitish, heavily pruinose, pale bel w lots of pale simple rhiz, K+y |
| | APO | | disks black w heavy white pruina, stip, prom inrolled thalline marg |
| | GEN | | foliose lichen, on granite |
| | THAL | | loosely att, 2-4mm wide, rounded tips, flat, smooth even lt grey mostly to rugose in center due to abundant brown pycnidia, black bel to pale at tips, abundant short blakc simple rhiz, K+y, KC-, C- |
| | APO | | some, stip, brown, cupped, marg thick and even, to 2mm wide |
Location 20
Trunk of oak; shady; in oak forest; N slope; near halfway point to pass.
Physciella chloantha []
Physconia enteroxantha []
Physconia isidiigera []
Physconia perisidiosa []
Location 21
Open area near top of trail down from Pass; S/SE slope.
Silene laciniata major []
ID from Tom Chester's flora of the eastern San Gabriels. There's not enough detail of leaves and styles in photos to be sure.
Location 22
Shady valley floor just down from Devore.
Aralia californica []
This was on canyon floor just a little down from Devore. A bunch of some borage there as well.
| | LF | | alt, pin to 2-tern, lflts large & lance & serr, petiole and petiolules long |
| | INFL | | rac of umbels, each umbel spherical, sev narrow acute bractlets under umbels, pedicels ~8-10mm |
| | SEP | | 5, fringed with bristles, v short and broadly apic |
| | PET | | 5, ~2x2mm, ov, acute, greenish-yellish-whitish |
| | STAM | | 5, alt petal, dorsifix |
| | OV | | 1, inf, 5 chamb, 1 ovule per chamb |
| | STYLE | | 5, somewhat fused bel |
Location 23
Rocks; shady; oak forest; N slope.
Location 24
Just before jct below Sturtevant Falls.
Erigeron foliosus foliosus []
| | GEN | | herb, ~tall, few brs but many small lin entire lvs, strigose, egland |
| | PHYL | | to 4mm, egland, v imbr |
| | RAY | | many, v narrow, ~3mm long, white to bluish, female |
| | PAP | | bristles, outside ones v short |
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