FL, Keys, 20061211
Buttonwood, few flowers. 

Gravel in front of I-9.

Immature seed, at 30x.  Note distinctive rugosity. Immature seed, at 30x.  Note distinctive rugosity. Stipule, at 30x. Young pistillate fl and some fruits, at 30x. 

Phyllanthus amarus [] 

In prime bloom and fruit (not quite ripe yet). 
 GEN ann?, v low delicate plant
 LF alt, thin, ellip, min, faintly glauc bel
 STIP scale-like, white, scar, lance, v faintly auriculate
 INFL few in axils, v short pedicels, monoec, male and female flowers mized
 SEP 5, mostly free, lance, min, greenish scar
 PET none
 STAM 3? (sorta fused)
 OV 1, sup, 3/6 chamb
 STYLE 3, each forked
 FR 3/6 lines but perfectly round, glab, green, 6 seeds
 SEED whitish, wedge, distinctly but shallowly long ribbed

Stipules and fruit, at 30x.  Bit blurry, but stipules are still clearly fused. Fruit and glands, at 30x.  Bit blurry, but almost complete lack of gland apps is still clear. Fruit, at 30x.  Note characteristic minute hairs only on angles. 

Chamaesyce prostrata [] 

In full bloom, some ripe fruits. 
 GEN ann?, delicate small matted plant
 ST distinctly pubesc ab, 5-8 rays radiating from rootstock, pinkish, somewhat angled
 LF min, ellip, entire, glab to sl glauc bel, rounded, 5x4+1mm
 STIP < 0.5mm, greenish, min, fused? 
 INFL few in most axils
gland v min, rounded to sl oblong-wide, greenish
no apps
 OV distinctly pubesc on angles, 3 distinct sl rounded angles, ~1mm or less
 STYLE split < 50%
 SEED 

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