>v~ 



Aplopappus. COMPOSITE. 31 X 



1. A. squarrosus, Hook. & Am. Shrubby, minutely pubescent and some- 

 what glutinous : branches very leafy : leaves rigid, oblong-obovate, obtuse, thickly 

 serrate with rigid pointed teeth, closely sessile or partly clasping, the midrib promi- 

 nent and the veins indistinct : heads several, spicate or racemose-clustered, elon- 

 uati-il-obconical : the linear coriaceous scales of the involucre regularly imbricated in 

 many series, all with short and obtuse glandular herbaceous tips, which are usually 

 squarrose-spreading : rays none: disk-flowers numerous: appendages of the style 

 ovate-lanceolate: akenes glabrous: pappus rather scant}', rigid. — Pyrrocoma grin- 



l/l /inl'tf, .v, I )l '. 



Probably near Monterey ; collected only by Douglas. Leaves an inch long. Heads three 

 quarters of an inch : outer scales of the involucre very short ; inner successively longer ; inner- 

 most equalling the di-k. 



2. A. linearifolius, DC. Shrub one to four feet high, much branched, nearly 



glabrous, glutinous from a resinous exudation; the branches slender, terminated by 

 a solitary pedunculate large and showy head : leaves much crowded, narrowly 

 linear, mostly tapering to each end, fully an inch long, entire, more or less punc- 

 tate : scales of the hemispherical involucre about in two series, all nearly equalling 

 the disk, oblong-lanceolate, acute or acuminate, thin, with scarious margins and no 

 herbaceous tip: rays 12 to 14, oblong-lanceolate: disk-flowers numerous: akenes 

 white silky-villous ; pappus bright white, rather soft and deciduous. — Steiwlus 

 linearifolius, Torr. & Gray, Fl. ii. 238. 



Rocks and dry ridges, Monte Diablo and the Contra Costa range, and in the Sierra Nevada 

 (Mono Pass, &c), extending to S. Utah. — Mead almost an inch in diameter ; the bright yellow 

 lavs nearly an inch long. Appendages of the style rather broad. 



3. A. acaulis, Gray. Depressed : suffruticose caudex cajspitose, bearing rosu- 

 'l^\- late tufts of leaves : the flowering shoots simple and scape-like, or leafy only below, 



terminated by a solitary head : leaves oblanceolate or narrowly spatulate, entire, 

 mucronate-acute, rigid, about 3-nerved, veiny, pale, scabrous with a very minute 

 harsh pubescence : scales of the hemispherical involucre rather few in 2 or 3 series, 

 ovate, acute, chartaceous with more or less scarious edges and a carinate midrib: 

 rays 9 to 12: disk-flowers rather numerous: akenes silky-pubescent : pappus white, 

 rigid and rather scanty. — Proc, Am. Acad. vii. 353. Stenotus acaulis, Nutt. I.e. 

 Aplopappus Nevadensis, Kellogg, Proc. Calif. Acad. iii. 9, a large form. 



High Sierra Nevada, at Summit (Boland r, A' Hogg, lKc), and in similar stations east to the 

 liocky Mountains. Flowering stems or scapes 2 to 4 inches high. Heads a third of an inch 

 long: rays half an inch. Lassen's Peak, Lemmon. 



4. A. apargioides, Gray. Herbaceous, tufted from a thick and firm rootstock, 

 7/ ^ glabrous except some scattered slender and usually deciduous hairs : flowering stems 



slender, a span high, bearing solitary or 2 to 3 peduncled heads : leaves lanceolate 

 or linear in outline, laciniately pinnatifid or spinulosely toothed, one-nerved and 

 minutely reticulate-veiny ; the radical ones 3 or 1 inches long, those of the (lowering 

 stems few and smaller: scales of the somewhat hemispherical involucre closed} 



imbricated in about 3 series, linear-oblong, obtuse, appivssed, with herbaceous tips J 



the outer successively shorter: rays 20 to 24, oblong: disk-flowers numerous: 

 akenes linear-oblong, glabrous : pappus of tawny slender bristles, rather deciduous. 

 — Proc. Am. Acad. \ ii. 35 I. 



Sierra Nevada, at Soda Springs, Tuolumne River, at 7,000 to 9,000 feet, Dolaiuler. Ilea. Is 

 half an inch long, exclusive of the ray. 



r>. A. paniculatus, Gray, I.e. Herbaceous, glabrous: stems nearly simple 

 |^w- from a thickish rootstock, rigid and mostly virgate, a span to a foot or more in height : 



leaves thick and coriai us, lanceolate, acute : the radical ones elongated, sometimes 



spiiiulose senate ; the cauline small, closely sessile, entire, ciliolato : heads rather 

 numerous, single or 2 or 3 together in the axils of bract like have-, forming a loose 

 virgate spik raceme, or sometimes pedunculate and panicled : scales oi the 



