BOTANICAL ee IN WESTERN WYOMING. 25 
tamed tapering dark-gree =n leaves, with very short, often even square epidermis cells, 
ender Boe or bast-bundles; circ —— — nah ih with a very narro ve um; ma- 
dasa F9t-000 mi cana wide, marked w 1 onfluent, 
rather i (0°024-0°027 mm. long) brown, very minutely papillose 
or almos smooth. —In large p mud, covering gravel, deeply submerged in 
Ligne mater, on the ica ae declivity of the Sierra ot vada, 7000 feet a 
n 866. Closely allied to the species, distinguished by its stout, short 
see withcat stomata, and the attic of the larger macrospores, etc.; in many 
respects near J, lacustris. 
Is litt.— Terrestrial, trunk sAeigaon 5 lobed; leaves 
erous stomata 
d by the v 
1 A. Bra 
angled. esa firm, erect, light-green, 
8 
on; on the Columbia, 7h. Nwuttall. 1833; Camas 
ee Ss, Chs. Geyer, 1843; Willamette valley, £. , No. 
ut an leaves, as most land Isoétes arti with three esota ea he bonis 
<r ermine to the 3 angles. k rhombic in transverse section, only super- 
ficially divided by a shallow groove into two ee s. Closely allied to J. melan 
of the Mississippi Valley, which Mr. Hall lately pra g also in tones, but resem- 
bling in the velum the two Florida species I. flaccida IC st 
ISOETES ECHINOSPORA Dur., var. BRAUNII Engels m.—In the tah Mountains, at 
9500 feet alt., S. Watson. The westernmost and the highest nies locality of this 
~~ N 
ZECID uM PSORALEZ,- —Spots ene ee ia abundant, generally Nb all the 
lower cake ce of the leaf, rarely a n the upper evra tse short margin crenulate; 
spore oh aged Samp ha aWorisials cwetin valiee n fresh, ae ellowish when 
dr nch long.—Parasitic on leaves of Peada ea vadan: Colorado Ter- 
riety. a0. ne a0 K. 
— Spots ; peridia usually oo all the lower surface 
AECI M PARRYI. 
of the st “prominent, b brightcotored, — su sim spores: Seberonoes, oe 
chrome yellow, *0008 
Meyer. 
Wyoming 9 Territory.—C. H. PECK. 
(215) 
