63 



64 



golden-yellow, their achenes little com- 

 pressed and trigonous, not enclosed, 

 but only the dorsal portion embraced, 

 by the involucral bracts; chaff of re- 

 ceptacle distinct, in 1 series between 

 disk and ray: the receptacle convex 

 and somewhat hirsute." Greene, pitt 

 3-167. Bear valley, Cal. (Parish). 

 HEMIZONIA CLEMENTINA Branri" 



"H. Streetsii Gray, Syn. PI Suppl 451, 

 not Am ac pr 12:162. Hirsute, especial- 

 ly below; stems erect or ascending, at 

 length much b.anched and leafy to the 

 numerous corymbosely-crowded heads, 

 3-4 cm high: leaves linear, obtuse or 

 acute, attenuate to the base, 4-8 cm 

 long, entire -or with a few short teeth: 

 heads 8-10 mm high; involucral bracts 

 linear, those of the receptacle about 15, 

 slightly united below; rays 14-20, 5 mm 

 long: disk fls numerous: akenes of the 

 ray rugose-tuberculate at maturity, in- 

 distinctly triangular, with an upturned 

 beak, and stipe 1 mm long, those of the 

 disk sterile, bearing a pappus of about 

 10 subulate-linear paleae, unequal in 

 length and width." Brandegee, Ery- 

 thea, 7:70. San Clemente and Catalina 

 Islands. 



ARNICA SCABERRIMA Greene. 



"Stout stems 2 feet high, with only 

 2 pairs of leaves over and above the 

 small and bract-like ones subtending 

 the several long naked stout peduncles: 

 lowest leaves 6 inches long, spatulate- 

 oblanceolate, rather closely dentate, the 

 upper pair as long and as saliently 

 dentate but of oblong-lanceolate out- 

 line and! sessile, both faces of all 

 strongly scabrous :stem and peduncles 

 rough with short stiff, mostly gland- 

 tipped, hairs: involucres campanulate, 

 their bracts biserial, the -outer some- 

 what oblanceolate, acute, hirsutulous: 

 rays deep-yellow, not large in propor- 

 tion to the heads; disk-corollas slender, 

 only the short tube hirsute: achenes 

 hirsute and with some sessile glands; 

 pappus fuscous, subplumose." Greene, 

 Pittonia 4:165. Little Kern river, 9,000 

 ft. alt. (C. A. Purpus 5260). 

 ARNICA BERNARDINA Greene. 



"Nearly allied to A. incana, and with 

 similarly bunched coarse, even fleshy- 

 fibrous roots, tufted basal leaves, etc., 

 but only cinereous with a fine tomentose 

 pubescence, this here and there over- 

 spread with some long arachnoid hairs. 



especially the leaves beneath; foliage 

 larger, more elliptic-lanceolate, and 

 more conspicuously denticulate or den- 

 tate: heads .still larger, nearly % inch 

 high and an inch broad; involucral 

 bracts oblong, obtuse, much shorter 

 than the disk: rays relatively larger 

 than in either A. tomentosa or A. in- 

 carna, somewhat villous on the outside, 

 8-nerved, 3-toothed: disk-corollas with 

 long villous tube and much shorter 

 broad and almost campanulate gla- 

 brous throat: achenes only sparsely 

 short-setulose, not glandular; pappus 

 long, dull-whitish, barbellate. Bear 

 valley, San Bernardino mountains, Cal- 

 ifornia (Parish)." Greene, Pittonia 4: 

 170. 



SENECIO ILICETORUM Davidson. 



"Stems erect, from a biennial or per- 

 ennial root, 1^-3 ft. high, very floccose- 

 \voolly, at length glabrate above: rad- 

 ical leaves at first floccose beneath, 

 thin, ample, undivided. 8-12 in. long, in- 

 cluding the petiole, elliptic oblong, 

 acute at both ends, coarsely dentate, 

 the teeth spreading, triangular, cal- 

 lous-tipped, the sinuses rounded and 

 the larger of them denticulate; lower 

 crfuline leaves resembling the radical, 

 with very short petioles rapidly be- 

 coming sessile, the uppermost narrow 

 lanceolate entire or irregularly den- 

 tate: head l / 2 -% in. diameter, less than 

 y 2 in. in depth, nearly sessile, 6-10 in 

 number, closely crowded on the top of 

 the peduncle: sea es of the involucre 

 lanceolate acuminate, with few calycu- 

 late ones at the base: rays none: all 

 the flowers fertile. Flowering end of 

 My and beginning of Je." Davidson, 

 Erythea 2:85. Cucamonga Mts., Calif. 



PTILORIA EXIGUA Greene. 



Radical and lower cauiine leaves pin- 

 natifid, those on the branches reduced 

 to short scales: bristles of pappus 9-1S, 

 their more or less dilated and palea- 

 ceous or thickened bases a little con- 

 nate in 4 or 5 phalanges and often 1-2- 

 setulcse on each side. Wyoming; Tex- 

 as; Nevada; Cal. 



PTILORIA CICHORIACEA Greene. 



Perennial. 1-4 ft. high, stout; heads 

 sessile along naked branches; mature 

 achenes short-linear, smooth, lightly 

 and acutely 5-angled. Rocky hills, 

 s-outhern Cal. 



