SYNOPSIS OF THE FLORA OF COLORADO. 121 
crowded upon the closely- a caudex, oblong or sub-linear, mar- 
gins revolute ; heads of 1-5 nearly sessile short 3-5-toothed involucres, 
sessile amon et the uppermost leaves, sometimes shortly exsert-peduneu- 
late in fruit; spine with a broad sessile rey v a hardly 2” long, 
i spreading from the imbricated sheathing base Discovered by 
1 Nuttall in the oe Mountains ¥ Piabeae: do; not seen by u 
ErtoGonum (LACHNOGYNA) L oGyNUM p hore. Fi . G, bs Gig Phe 
63. Branches of the candex very dion and crowded ; seape a span to 
1° high, slender; leaves lanceolate or lance-oblong, 1’ long, acute, 
-petioled, more or less oaelutia? -margined, silky above, tomentose be- 
heath; calyx silky- _— yellow v within.—Southern Colorado and 
New Mexico. Bluffs of the Arkansas at Pueblo, Greene, 1873. 
ERIOGONUM ‘erseossraca) 0 OVALIFOLIUM, Nutt. 7. d G., l.¢., p. 
= 4, Perennial, espitose, acaulescent, hoar “woolly s leaves oval or 
thin ahi: scarious after Bowetink ; segments ‘ ery cote the outer very 
broadly oval, cordate at base with nsually a rather ve sinus, the lobes 
Teaching to the joint or beyond it, the inner narro spatulate, emar- 
ginate, connivent-erect and invo late, each bearing 3 PPh at the claw- 
like base; ovary glabrous.—Rocky Mountains ot Colorado to Utah and 
Nevada. 
ERIOGONUM MULTICEPS, Ker. 7. & G., 1. ¢., p.166. Clothed with very 
white awrreania wool; branches of the ae short, assurgent, leafy ; 
leaves oblong- spatulate or oblanceolate, gradually attenuated into the 
petiole; scape 3/-5’ high; head bracteate ; bracts unequal, or 2 of them 
somewhat woolly vate- mee retuse; filaments nearly 
. —Sou her Colorado, Br 2 
GONUM PAUCIFL speed Pur: evs iano Becoming 
cro owded ; leaves inser or subspatilate, a attenuated 
into a petiole, at length nearly smooth; scape 4’/~6 high, bearing a single 
ead; involucres 5-10, turbinate- a sear e yoasnyd; calyx white, 
glabrous, segmentsova 1; fi South Park, Canby; 
Hoo, o. i 
ERIOGONUM MICROTHECUM, Nutt. 7. & G., l.¢., p. 170. Shrabby, rather 
low, teately a? high,) very much branched from the base; tomentum 
floccose, sometimes rather thin; branches erect or assurgent, but the 
Be cad cl Sate a ee rs Cnet tare 
A ees 
ments obovate, inner ones at least emarginate or retuse; ovary often 
Scabrous above on the angles. aot 
Var. FENDLERIANUM, Benth. Leaves broad, 1/~14/ long, 4-5’ wide; 
tong a" Tong, ia u an ample loose cyme. me.—Caiion City, Brandegee. 
0, Greene 
0, 
Ver EFFUSUM, T. & Gy (B. effusum, Nutt., Pl. Gamb., l. ¢., p. 172.) 
