CATALOGUE. 
171 
rowly or broadly lanceolate, 1-2.^° long, 3-6" broad, more or less scabrous- 
pubescent, entire or obscurely serrulate ; beads 12-16" broad, mostly terminal 
on long branches ; cliafF of the receptacle rather rigid, pungently acute ; rays 
10-12, oblong-oval, entire or slightly emarginate ; acbenia compressed- 
pyriform, scarcely angled, black and somewhat shining. — California to Col- 
orado, and southward to Arizona and New Mexico. Utah, from the foot- 
hills of the Promontory Range to Bear River Canon; 6-8,000 feet elevation; 
July-October. (606.) 
CHiENACTis ^ Xantiana, Grray. Froc. Amer. Acad, 6. 545. Sparingly 
lanulosc, soon nearly glabrous ; stems 6-9' high, sparingly branched ; leaves 
l-2i' long, linear, with a few distant oblong-linear lobes ; heads rather few, 
8-10'Mong; involucral scales oblong-lanceolate, rather lax, the longest 
scarcely equaling the corollas ; corollas flesh-colored, the outer ones )nit little 
larger and not longer than the others ; achcnia hispid ; pappus of 4 inner 
lanceolate scales, nearly as long as the corolla, and 4 outer ones, very short 
and l)roadly cimeate-obcordate. — Near Carson City, Nevada, (Dr. Ander- 
son !) Southern California, (Xantus, Dr. Van Horn !) 
Ch^.nactis mackantiia. a span high, pubescent with delicate partly 
deciduous wool; stems much branched, especially at the base; leaves 1-2' 
long, 1-2-pinnatifid with oblong lobes about 1" wide : scales of the obconic 
involucre in two rows, linear-lanceolate ; corollas 6" long, flesh-colored, 
minutely pubescent, narrowly obconic, scarcely expanded at the summit, the 
marginal ones not appreciably larger than the others ; anthers included ; 
branches of the style at length exserted ; achenia blackish, hispid ; pappus 
of 4 oblong-linear scales, shorter than the achenia and only half the length 
of the corollas, and 4 outer oblong-cuneate ones, i-i as long as the inner 
ones. — Near the last, but has more compound leaves and much longer 
flowers. Foot-hills of Western Nevada, 5,000-5,500 feet elevation; May, 
June. Plate XVIII. Fig. 1. A plant ; natural size. Fig. 2. Achcnium 
^ CHJ5NACTIS, D C. Heads many-flowered ; flowers all tubular and perfect ; the corollas ^rlabrous 
or puberuleut, elongated, narrowly obconic or ampliated above and trumpet-shaped, 5-tootbed, the outer 
ones (rays) more expanded than the rest and often somewhat irregularly A'entricose, 5-cleft ; teeth or 
lobes pubescent. Involucre campannlate, the scales oblong-linear, about 20, in 1-2-rows. Receiitacle 
alveolate. Stjle with very long narrowly linear branches, the upper part hispid. Achi'iiia liufar, taper- 
ing to the base, striate or quadrangular. Pappus of 4-12 hyaline nieuibraiuuis usually nerveless scales, 
witli erosely denticulate margins, those of the disk-flowers usually nuu li shorter. — Annual, biennial 
or perennial herbs, natives of Western North America, with alternate 1-3-pinuatiful leaves, and rather 
large heads terminating the simple or corymbose branches. 
