41)2 CD.Ml'OSIT.K. Calycuseris. 



and equalling the ukenes in length. Ligules elongated. Akencs soniowliut fii.si- 

 form, 5- lO-ribbed, tapering into a beiik, the apex of which is crowned with a 

 scarious persistent cup denticulate at the margin. Proper pappus of numerous fine 

 and capillary white bristles, which are united at the base and separate in a ring. — 

 Low glal)rous annuals (New Mexican and Californian), branching from the base, 

 and bearing middle-sized pedunculate heads ; the leaves pinnately parted into 

 linear divisions, or the smaller and scattered upper ones almost entire : j)edunoles 

 and involucre sparsely beset with stout-stalked tack-shaped glands. — 1*1. Wright, 

 ii. 104, t. U, ife r.ot. i\[ex. Bound. 106. 



1. C. Parryi, fJray. Flowers yellow: akenes smooth, slender, with 5 acute and 

 intermediate obtuse ribs, the beak slender. — Jiot. Mex. iiound. 1. c. 



Mountains east of Monterey, Jnne, Parr}/. A IVagnientury specimen, the only one known, 

 wanting tlie base of tlie stem and tlie lower leaves. 



('. Wmoirni, Oiay, 1. c, the other and Letter known species, inhabits the eastern part of New 

 Mexico : it has iose-coli>n;(i flowers, and stouter akenes, witli thick, very obtuse, tubereulate- 

 roughened ribs and thiekish beak. Dr. Palmer collected specimens in Utah witli akenes some- 

 what intermediate in character ; and Dr. Newberry found others, in W. New Me.vico (without 

 fruit), whicli show liardly any of tlie curious glands. 



116. MALACOTHRIX, DC, Ton-, k Gray. 

 Head many-Uowered. Involucre campanulate or cylindraceous ; the scales either 

 loosely imhricated, or mainly ecjual, and calyculate with a few short ones at base, 

 lioceptacle flat, naked, or sometimes with delicate and fragile or deciduous capillary 

 bristles interpo-sed between the Uowers. Akenes short, oblong or columnar, glabrous, 

 terete and 8- 15-striate-ribbed, or 4-5-angled by the stronger or primary ribs, 

 little if at all contracted at base ; the broad truncate apex furnished with a crown- 

 like entire or denticulate border or sharj) edge, sometimes evidently re[)resenting 

 an outer pappus: the ordinary pappus bright white, consisting of a single series of 

 soft and scabrous or toward the base minutely barbellato cai>illary bristles, which 

 are caducous more or less in a ring, and commonly of a few (1 to 8) outer and 

 stronger as well as smoother more ])t!rsistent bristles : in an anomalous species, all 

 the pappus is wanting. — Herbs (peculiar to the western parts of North America) ; 

 with soniewhat lealy or scape-like and mostly branching stems, middle-sized or 

 small pedunculate heads, commonly nodding before expansion, and pinnatilid 

 or occasionally entire leaves. — Torr. & Gray, Y\, ii. 485 ; Gray, PI. Fendl. 113; 

 Benth. & Hook. Gen. PI. ii. 518 ; Gray, Proc. Am. Acad. ix. 213. Leptoseri.s, 

 Leucoseris, iK: Mahtcovitris, Nutt. 



§ 1. Invalitcre of numerous hroad and blunt silver i/scarious scales, with only a (jreen 

 midrib or centre, re(/ul(rrli/ imbricated in scoeral .series, the outer successively 

 shorter and rounder : receptacle beset with slender jjersistent bristles : corollas 

 white or at first cream-color, chanyiay to pink or purple in dnjinij or fadiny. 



1. M. Coulteri, Gray. Annual, a foot or two high, glabrous and somewhat 

 glaucous, rather leafy : leaves laciniate-i)innatiiid or toothed ; tlie radical and lower 

 cauline oblong or spatulate, sessile ; upper auriculate-clasping and ovate-lanceolate, 

 gradually reduced to bracts : heads terminating the loose branches : akenes acutely 

 about 15-ribbed and 4-5-angled, the sunuuit more or less denticulate by the 

 projection of the ribs : one or two stouter bristles of the i)appus nearly persistent. 

 --P1. Fendl. 11.3. 



