Pun tin/roles. COMrORITJC. 4()9 



rootstock or caiidox, alternate sessile and entire leaves, and small corymbose heads 

 of light yellow llowers. — Benth. in Hook. Ic. PI. t. 1139, d" Gen. PI. ii. 438. 



1. L. hypoleuca, Benth. A foot high, eqnally leafy to the top : leaves ovate- 

 ohlong or elliptical, obtuse, an inch long, reticulate-veiny, very white beneath, 

 becoming green and glabrous above with age : heads half an inch long, on rather 

 slender peduncles, 3 to 9 in an open cluster : corolla-lobes almost half the length of 

 the funn(>lf()rm throat. 



Var. Californica, Gray. More densely woolly : ui)per surface of the leaves 

 hardly becoming naked : lobes of the corolla only a third or fourth of the length of 

 the throat. — Proc. Am. Acad. ix. 206. 



The spocies wns collected by Di: LyaU- only in tlie Cascade MonnUiiis, on tiin frontiers of Hrit- 

 ish Columbia. Var. UnJifornica, on Chinniey Rock, Mendocino Co., and on the coast mountains 

 back of Santa Cruz, California, Kellogri. 



100. PSATHYROTES, Gray. 

 Head rather many-flowere<l, homogamous; the ilowers all tubular and perfect. 

 Involucre campanulate, of one or two series of nearly ecpial somewhat herbaceous 

 scales, or the inner more scarious. Receptacle flat or barely convex, naked. Corol- 

 las narrow, with proper tube usually' very short, 5-toothed ; the teeth short and 

 obtuse, externally glandular or viscid-bearded. Anthers minutely sagittate-auricled 

 at base. Style-branches obtuse or somewhat truncate, destitute of any distinct 

 appendage. Akenes turbinate or oblong with narrow base, villoiis or hirsute. 

 Pajipus of copious and uneiiual rather rigid (naked or merely scabrous) capillary 

 bristles, shorter than the corolla, generally rusty or ])rownish. — Low and more or 

 less glandular or viscid-pubescent herbs, of heavy or balsamic odor (mostly of the 

 interior desert region) ; with alternate leaves, and rather small or middle sized heads 

 of light yellow or yellowish flowers. — PI. Wright, ii. 100, t. 13, (^ Proc. Am. Acad, 

 vii. 363, & ix. 206. 



§ 1. Verj/ Into or prost7'ate aixf (lifTusehf much hravrhed annnah : Icntvs rounded and 

 toothed or anr/led, on fon;/ petioles : heada sdiort-pctialrd in (he forks, no^/dinf/ 

 after flowering : akenes turbinate, very villous : bristles of the pappus rigid 

 and almost in a single series. 



1. P. annua, Gray, 1. c. Scurfy-pubescent or mealy-hoary : leaver coarsely an- 

 gulate-toothed, the lower rounded or reniform and the upper dilated-cuneAte : corol- 

 las yellowish. — Bulbostylis (Psnthi/rotes) annua, Nutt. PI. Gamb. 179. 



In saline desert soil, Mono Lake (Brewer), western part of Nevada {Torrej/, Watson), and prob- 

 ably Arizona (not New Mexico) ; first collected by Dr. Gambcl. A span high : leaves about 

 half nn inch lonjr and broad : heads 3 or 4 lines high. The herbage nnich resembles some species 

 of Atriplex of the Oin'nne section. Style-braiwhes of this and the following capitollnte-truncftto 

 with a slight penioillation, of the Senecionoid or Hclenioid type. 



2. P. ramosissima, Gray, 1. c. Resembles the foregoing, but truly woolly : 

 leaves crenately few-toothed : corollas bright yellow : akenes sliortturbinate. — 

 Tetradymia {Polydymia) ramosissima, Torr. in En)ory Rep. 1848, 145. 



Gravelly hills of the southeastern borders of the State, near Fort Mohave (Cooper) : and in 

 Arizona on the Gila, Emory, Fremont, Thurber, Parr;/. 



§ 2. Erect, rigid, and seemingly rather woody at base: hairs srssilr ami filiform : 

 akenes oblong : bristles of the pappus less rigid. — Peuckphvllum, (iray. 



3. P. Schottii, Gray, 1. c. A span to a foot high, with ascending branches, 

 leafy to the solitary erect head, nearly or quite glabrous, 1)ut somewhat glutinous : 



