sis 5 
seer oe oe ve 
ep kp 
a 
an. ovary none. 
126 SYNOPSIS OF THE FLORA OF COLORADO. 
Denver, Dr. Smith; B. H. Smith. Plains of the Platte, Coulter. Very 
abundant on the plains around Colorado Springs, Porter. 
aa OBTUSATA, Pursh.—Caton City, Brandegee. 
Eup A DICTYOSPERMA, Fisch. & Meyer.—Hall & Harbour, 510. 
masta ‘Colorado , Porter. 
EUPHORBIA MONTANA, Engelm. DC. Prod.,15,2d pt, p. 148. Perenni- 
al, very glabrous, olancous 8; stems many froma thick ro ot-stock, ascending, 
leafy, shortly branched from the upper axils or iftedl slink, 8/-15’ high; 
leaves scattered, rather thick, subsessile, entir e, rounded at base, 4//-15” 
long, ovate, obtuse, ticillate; floral bracts orbieulate, 
tria ngular, rarely ‘subcordate, very obtuse, mucronulate, broader than 
long ; inflorescence umbellate, the rays becoming repeatedly dichoto- 
us; involucre turbinate, roughish in, the lobes oblong-linear, 
n sho 
styles very short, bifid, thickened at the apex; capsule 2” long, ovate, 
smooth; seeds oblong, superficially pitted, caruncle shortly conical. — Hall 
& Harbour, 509; Parry, 438. Near Denver, Dr. Smith; B. H. Smith ; 
Canby; Me chan. Cation City, Brandegee. Colorado Spri ngs, Porter. 
Boulder nee Clear Creek Caiion, and plains of the Platte, ihe 
TAFOLIA, Miiller. DO. Prod., 15, 2d pt., p. 933. Low, erect 
OF ascending ; peti oles 4-10 times shorter than the blade; blade lobate- aon: 
b therwise coarsely dentate; racemes short; bracts lanceolate ; 
divisions of the pistillate ree 7 “ lane eolate; anthers oblong ; fila- 
nts not thickened at the summit; ovary strigose-hirsute; styles con- 
bate about one-third their sensi etn Thbrtish, erect-spreading, sub- 
acuminate. 
ict 
Var. RAMOSA, bm DC., 1. ¢., 984. (T. ramosa, Torr., in Ann. N. Y. 
2, p. 245.) Hirsute, erect, much branched, 6/-8/ hi stem jars 
at leneth flagelliform- elongated, weak and somewhat twinin g@; leaves 
triangular-ovate from a cordate base or oftener lan riceblate, qradeally ac- 
euminate, 8-12” long.—Hall & Havok, 309. Caton City, Brandegee ; 
Green 
: e pre OL 
not coherent, shortly adnate to the calyx; filaments pilose; ovary stel- 
late-tomentose, softly muricate; styles twice or thrice paren ries 
2-parted.—On the artes Hall & Harbour, 514. Banks of the Platte. 
near Denver, Dr. Smith ; B. H. Smith ; Porter. Cation City, Brandegee. 
ARGYROTHAMNIA! HUMILIS, Miill. DC. Prod., 15, 732. (Aphora 
Dee : 
humilis, Eng. & eg Pl. Lind., 1, p. 54.) Stem about 1° high, much 
1 
nehed, silky or strigose- bescent, branches spreading, ascending, 
‘pu 
compressed, an fei: leaves narrowed at the base, spatulate or obovate 
ome or linear-laneeolate, acute, entire, sparingly pubescent, with 
; raceme shortened 
ma Se ahuort peduncles; pedicels of the male flowers very short, of the 
fertile thrice shorter than the calyx.— Pueblo, Greene. 
ROTHAMNIA, Miill. DC. Prod., 
Petals altetuate with the calyx 
the gs the a a of 
; male free 
Male calyx valvate; female imbricated, 
rarely suppressed. Glands 
: ht 
