brauebing herbs, with opposite leaves 3 os snd rath subalternate, trian poe ae or 
-and terminal or alar peduneles bearing a single head. Flowers DPSS sotcdaces 
a. v. Am 
vy 
68 SYNOPSIS OF THE FLORA OF COLORADO. 
long, the uppermost nearly linear, entire, viscid, more or less resinously 
punctate ; heads clustered, mostly s essile ; scales of the involucre ove 
with scarious margins, im nbricated in about! series; achenia glabrous.— — 
Near Canon City, Brandegee. Near Pu alo @ reene. 7 
PERICOME! CAUDATA, Gr., Pl. W: “ight. 2, p. 82. Herb 3°-4° high, much 
branched, growing in large bunches; branches terete, netlacs § sparingly 
puberulent or smooth; leaves on long petioles, membranaceous, 3-nerved 
a 
apex, free tips lanuginons ciliate ; corolla yellow, the slender tube vis- 
cous-glandular; achenia 2” long, much compressed, margined all around 
with a strong, callous nerve, bearded witl hispid hairs.—Grand Canon 
ot the Arka janes Brandegee. Chiaun Cation, Meehan. Ute Pass, Porter. 
DIAPERIA’ PROLIFERA, Nutt. Annual, erect, woolly; stems ata 
rigid, ob ‘hi sah eausgatel by a capitate cluster $/-}/ in diameter 
cluding a large number of small heads; some of “the branches whea 
numerous arise from below and overtop this compressed head; leaves 
epimers or linear-spatulate, wiavagiey sessile, entire.—Hall. 
MELAMPODIUM? CINEREUM, DC. Prod., 5, p. 518. (M.leucanthum,T. 
& G. PL ¥. Am.2,p.271.) Suffruticose, much branched at the base, 6/-10°y 
igh, cinereous-pubescent; leaves very numerous, linear, the lower 
Diced apnea obtuse, entire or obtusely sinuate-repand, about 1’ long, 
—— 
ae. a ae 
1PERICOME, Gray, in Pl. Wright., a; Heads many flowered discoid ; inv aH: re abel rter : 
than the disk, campanulate. Scales in 1 series, ¢ ab oe 20, linear, united among them- 
: ee ' , _ 
mm odite. 
draceous; teeth 4, ovate, spreading. Anthe sert, sub-sagittate at base. an = 
ov style filiform, slightly flatt ened, yma ay gitebaias hairy on the pitade. "above 
the apex ’Achenia oni ong, compressed, very smooth on the faces, 
hearded-ciliate on the nerve-like imargins Pa nen sat amelle-coroniform, fianbriate 
erate; the fimbrice day. to the strong a f the acheninm.—Tall, ’ 
od very Ue acuminate, slightly fenton Ua inetate, not glandular. Hee ads 
Flowers yellow. 
‘Diarenta, Nutt sae ls AS eu -oblong, disposed in sessile glomerules of 4 
rac 
ing th oe 
pistillate, in oe sso of pat oie of the rec veptacle, with a much asta ated filiform — 
truncate coro —3 central staminate, with a tub se infundibuliform minutely — 
4-toothed aontie. dentists of, ovaries,each supported by a filiform stipe and inclose¢ — 
in a chaff o e receptacle. Scales of the involnere and the chatt of the small eon- 
i closely and — 
vex receptacle , bread and large for the size of the head, nd 
som at distichously imbricated and wrapped around each other, the in 
sively longer; the 2-3 innermost chartaceous, attenué t the ha aly tow an’ the 
apex, each convolnte and separately inelosing : lower. § 
x, sterile Style im the 
ta undivided; in the fertile with 2-filiform branches. ire henia ‘phovoid-oblong, 
obcompressed, glabrous, destitute of pappus.—T. & G@. Fl. N. 2 
3 Mibakerc opium, L, ‘Heads many-flowered; the ray-flowers rad! 0, in a single series; 
those of the disk sterile by the abortion of the style. Involucre daabWe; the exterior 
of 3-5 flat and spreading foliaceous seales; the inner as mat ty as - ray-flowe and 
inclosin R ik 
¢ their achenia. eceptacle govt or subulate-comics ‘al, chatty ; 
membranaceous, deciduous. jes in. the sterile flowers unc divided ok ‘hai airy above: 
Achenia of the disk abortive; of the ray -obovoid, sooth, slightly este 
the inner seales of pees inv nity whie often, rugose or tuk la 
the summit, Pe either truncate or proaead fatp -3 teeth ge awns.—H. 2 
sufiruticose (chiefly roichrans plants, with dichotomous stems, opposite sessile leay: 
