Aplopappus. COMPOSITE. 127 



petiole), entire or denticulate or on same plapt spiniilose-serrate : heads several or rather 

 numerous, raceiui^sely or spieately disposed along naked upper part of the stem or (either 

 singly or 2 or 3 together) in axils of upper leaves : involucre (half-inch or less high) from 

 hemispherical to turbinate-canii)auulate ; its bracts rigid, well-imbricated, and with short ab- 

 rupt mostly mucronate-pointed or apiculate green tips, these either erect or somewhat squar- 

 rose : rays (8 to 20) 2 or 3 lines long. — Torr. in Sitgreaves Rep. 1G2, as to syn., &c., proba- 

 bly not as to the specimen. Ilomopappus racemvsus, Nutt. Trans. Phil. Soc. 1. c. 332. Pyrrocoma 

 racemosa, Torr. & Gray, Fl. ii. 244. The type is a form with virgate stem, bearing 3 to 9 

 racemosely or spieately disposed and approximate or renKJte heads, of the larger size, with 

 involucre half or two-thirds inch l)road as well as high, and akenes (or at least ovaries) more 

 or less beset with villous hairs. A. lanceolntus, var. stn'ctus, Gray, Proc. Am. Acad. viii. 389, 

 is a form with more villous akenes. — Plains of Oregon, NultaU, Hall, &c. : also Northern 

 California, GreeMe, where it varies with many and correspondingly smaller heads, these glom- 

 erate in numerous axils, and the campanulate involucre disposed to be squarrose. Also it 

 evidenth' passes into 



Var. glomerellus. Heads narrower and smaller, disposed to be fascicled in twos or 

 threes in the axils of small upper leaves, or at summit of stem or short peduncles : involucre 

 often turbinate : akenes glabrate or sometimes glabrous : herbage somewhat more disposed 

 to be balsamic-viscid. — Homopappns f/fomeratus, paniculatus, & artjiitus, Nutt. 1. c. 331. Pip-- 

 rocoma (jloineiata, panicidata, & an/itta (the latter a stouter and more leafy state), Torr. & Gray, 

 1. c. Aplopiippus paniculatus, Gray, Bot. Calif i. 311. — Plains of the Columbia, E. Oregon, 

 Nutfall, Nei-ius, Cusick, &c. N. W. Nevada, Anderson, Lemmon. 



Var. virgatus. Slender and smaller, with strict virgate stems and narrow leaves : 

 heads as in the type, but only half the size, few, or in depauperate plants solitary. — A. panicu- 

 latus, var. rin/atiis, Gray, Bot. Calif, i. 312. — Eastern part of the Sierra Nevada, California, 

 Bolandcr, Lemmon, &c. Passes into 



Var. stenocephalias. This is to var. (ilomcreUus what var. virgatus is to the type : 

 it has scattered heads ; these narrow, comparatively few-flowered ; the bracts of the obloug- 

 turbinate involucre rigid and more pointed. — A. paniculatus, var. stenocephahts, Gva.y,^ot. 

 Calif. 1. c. — With preceding var., Lemmon. 

 A. apargioides, Gray. Low, with numerous ascending or diffuse few-leaved or some- 

 times scapiform stems from a thick caudex, a span to a foot high, bearing solitary or few 

 pedunculate heads : leaves lanceolate or the radical broader, from denticulate to laciniate- 

 dentate or even pinnatifid : involucre hemispherical (a third to half an inch high) ; its bracts 

 lanceolate to narrowly oblong, mostly obtuse, imbricated in few rather loose ranks, outer 

 sometimes equalling the inner : rays 20 or more, oblong, comparatively large, commonly fer- 

 tile : pappus softer. — Proc. Am. Acad. vii. 354, & Bot. Calif, i. 311. — Eastern parts of the 

 Sierra Nevada, California and adjacent Nevada, from Sierra Co. to San Bernardino Moun- 

 tains ; first coll. by Bolander. 



= = Pubescence not tomentose nor floccose, but rather villous and persistent : leaves thinnish, 

 oblong, more regularly and closely spinulose-serrate, numerous and approximate on the stem or 

 branches up to the heads or nearly: rays fertile. 



A. hirtus. A foot or less high, hirsutel}' pubescent and villous, even to the involucre, or at 

 base lanuginous : stems rather simple, ascending, bearing few or scattered pedunculate 

 heads : leaves membranaceous, pectinately serrate with long and salient slender-suliulate 

 teeth ; cauline an inch or two long, radical sometimes 4 inches long and with margined 

 petioles : involucre hemispherical, half-inch or more high ; its bracts rather loose, linear, acu- 

 minate or acute, all aI)out equalling the disk, the outer mainly foliaceous : rays 20 or more, 

 conspicuous : akenes rather short, sericeous-pubescent : pappus soft, whitish. — Baker Co., 

 Oregon, Cusick. Washington Terr , Brander/ee. Might be arranged in a following sub- 

 division, with A. unijlvrus, but has the habit of the next. 



A. "Whitneyi, Gray. About a foot high, somewhat minutely villous-pubescent, or foliage 

 glalirous, branching, bearing rather numerous fasciculate-panicled and mostly sessile heads : 

 leaves inch or less long, spinulose-dentate, those subtending the lower heads hardly smaller 

 than the main cauline ones: involucre narrow, oblong-turbinate (about half-inch long), 

 glabrous; its bracts lanceolate, acute, appressed, subcoriaceous, with short and sometimes 

 indistinct green tips, well imliricated, outer successively shorter : rays 5 to 8, with oblong 

 and small ligules, little surpassing the 10 to 20 disk-flowers; akenes oblong-linear, glabrous, 



