CA, Southern California, 20080825
Pasadena and La Canada, lichens. 

 Location 1 
 Location 2 
 Location 3 
 Location 4 

Several locations along route up to Angeles Crest Highway.

Location 1 

350 S. Grand, Pasadena.  Base of some tree on east side of street with particularly good lichens.  I forget what exactly.


Location 2 

Mellow and Crown, La Canada, east side of street and slightly south of intersection.  Base of a Quercus chrysolepis covered with something.

Physcia adscendens [] [voucher] 

Particularly unhealthy specimens which seem to give K-reaction.  But white corticate undersurface, abundant white cilia, and soredia produced under tips can only be one species.  Confluent into one enormous mass covering the tree base.  I've seen this in a few other places in Pasadena, too: 874 S Oakland on the base of the sweetgum, for example.  Particularly greenish when wet,


Location 3 

Limb covered with _Candelaria_, blurry. 

Linda Vista near Heatherside, west side of street.  Elm of some sort.  Entire tree covered with lichens(!!) Appears to be spray-painted from distance.

Close-up of young lobes, at 30x. Ascus with spores, in IKI, at 1000x. Ascus, in IKI, at 1000x. Shows thollus structure. Apo section, in water, at 400x. Apo section, in water, at 400x, polarized. Apo section, in water, at 400x. Apo section, in water, at 100x. Close-up, at 30x. Close-up with apothecium, at 30x. Close-up with apothecium, at 30x. Close-up with apothecia, at 10x. Bark covered with it. Nice one among young _Candelaria_. Nice one among _Candelaria_. 

Candelaria pacifica [] [voucher] 

 GEN microscopically fruticose lichen, on rough elm bark, probably enriched by bird droppings
 THAL bright yellow-orange, leprose to minutely subfruticose lobed, undersurface quicky breaking up into granular soredia, lobes ascending
 APO a few, lecanorine, orange, epi brown
hymen clear, IKI-
hypo clear, alg abundant under and in rims
paraphyses abundant, simple, tips rounded subclavate
asci clavate to balloon-shaped at maturity, thollus indented inside, thick IKI-wall and IKI-lens inside thollus that doesn't seem to penetrate completely, cortex weakly K+ golden, epi shows minute POL+ golden crystals
 SPORE 8 per ascus, clear, 1 cell, oblong, smooth, IKI+ reddish, (12)14+/-1.6(16)x(3.0)4.3+/-0.62(5.0)um (Q=(2.8)3.2+/-0.73(5.3)) (N=10)

Beautiful lobe tips, at 30x. Beautiful one, at 10x. Nice one among _Candelaria_. 

Physconia isidiigera [] [voucher] 

Beautiful one, at 10x. Nice one among young _Candelaria_. 

Physcia adscendens [] [voucher] 

Lecanora hagenii [] [voucher] 


Location 4 

Base of oak tree covered in it. 

Arroyo Blvd and Bradford, east side of street, on leaning Quercus agrifolia.  Base of oak covered with Lecanora, possibly two species, as one changes colors when wet, other stays white.  However, everything I collected is L. hagenii. 

Spores, in K, at 1000x. Spores, in K, at 1000x. Apo section, in water, at 400x, polarized. Apo section, in water, at 100x, polarized. Apo section, in water, at 400x. Apo section, in water, at 100x. Thallus and apo, at 30x. Oak bark covered with it, wet. 

Lecanora hagenii [] [voucher] 

 THAL K-, C-, KC-, P-
 APO 
rim verrucose, thick, prom
no crystals, cortex basally thickened (40um vs 25-30um)
epi brown, barely sol in K
hymen and hypo clear
 SPORE 8 per ascus, ellip, smooth, 1 cell, clear, 8-10x4-5.5

< 20080823 | home | index | 20080826 >

Copyright ©2008 Jason Hollinger
Creative Commons license
Last changed on November 13, 2008