316 COMPOSITiE. Layia. 



§ 3. Calltglossa, Gray, 1. c. Pappus wanting or of few or several flattened 

 awns or paleaj (instead of bristles), either naked or with long hairs only at base. 

 — Callifflossa, Hook. & Arn., with Oxi/vra, DC. & Lindl. 



* Rays pure white: onl_y marginal receptaeular bracts present: pappus aristiform: habit of Z. 

 (jlandulosa : a few small stipitate glands on the upper leaves and involucre. 



L. Douglasii, Hook. & Arn. Low, sparingly hirsute or hispid : radical leaves pinnatifid- 

 dentate ; upper linear aud entire : rays rather short, broad, 3-cleft : lobes of disk-corolla hir- 

 sute outside : akeues narrow, those of tlie disk villous-pul)escent : pappus of about 10 minutely 

 scabrous linear-subulate flat pale», nearly equalling disk-corolla; their margins toward the 

 base scantily beset with long and straight villous hairs. — Bot. Beech. 3.58 ; Gray, Proe. Am. 

 Acad. ix. 194. — Gravelly banks, between tlie Dalles aud Great Falls of the Columbia 

 River, Dourjlas (the pappus in the specimen fulvous by discoloration) ; Austin, Nevada, 1882, 

 M. E. Jones (pappus bright white). Probably only a form of L. (jlandulosa with more 

 paleaceous aud almost uaked pappus. 



* * Rays yellow at base, white or pale at simimit : bracts of the involucre lanate-ciliate at the 

 basal margins where infolded around the akene: both ray- and disk-akenes mostly oblong- 

 obovate. 



-1— Pappus of 7 to 12 broadisli naked palea^: disk-akenes more or less villous-hirsute. — Calli- 

 achyris, Torr. & Gray. 



L. Jonesii, Gr.w. Somewhat hispidulous and viscid, a few small and sessile dark glands 

 on and near the involucre : leaves hispidulous-ciliate, narrowly linear, simply pinnatifid, and 

 up]ier ones 3-lobed or entire : heads rather small : i-ays only quarter-iuch long : receptaeular 

 bracts only marginal : paleaj of the pappus ovate or oblong-ovate, acuminate, often erose- 

 denticulate, not longer than the tube of the corolla. — Proc. Am. Acad. xix. 18. — San Luis 

 Obispo, California, M. E. Jones. 



Li. Fremonti, Gray. A foot high, minutely pubescent, not glandular : leaves not eiliate, 

 nearly all piuuately parted into oblong-linear or spatulate short lobes : rays ample, half to 

 three-fourths inch long : receptaeular bracts to many of tlie flowers : jialeiB of the pappus 

 from ovate to oblong-lanceolate, tapering into a subulate awn, nearly equalling the corolla, 

 the margins entire, accompanied by a few free long-villous hairs, which much exceed those 

 of the surface of the akene. — PI. Fendl. 103, Bot. Calif, i. 370. Calliuch^ris Fremonti, Torr. 

 & Gray, .Jour. Bot. Nat. Plist Soc. v. 140. — California, upper valley of the Sacramento to 

 Tuolumne Co. ; first coll. by Fremont. 



■i— -1— Pappus subulate-aristiform anu unequal and naked, or none: chaffy bracts to most of the 

 disk-flowers: herbs loosely erect or diffuse (about a foot high), not glanduliferous, with herbage 

 frlabrous or minutely pubescent, but the margin of the leaves and yet more the base of the 

 bracts strongly hispidulous-ciliate: lower leaves piunately parted or lobed; upper entire: heads 

 showy, with ample usually particolored rays. 



Li. Calliglossa, Gray, 1. c. Akenes villous-pubescent or partly glabrate : pappus of usually 

 several (10 to 18) very unequal aud rigid subiilate awns, which are somewhat scabrous or 

 slightly hirsute near the dilated Itase, the marginal ones rather shorter than the corolla, the 

 smaller hardly half as long. — Oxijura chrysanthemoides, IjimW. Bot. Reg. t. 18.50; Fisch. & 

 Meyer, Hort. Petrop. t. 6. Cullir/lossa Douglasii, Hook. & Arn. Bot. Beech. 356. Callichroa 

 (Calli(jlossa) Douglasii, Torr. & Gray, Fl. ii. 396. — California, common around Sau Fran- 

 cisco Bay; probably first coll. by Douglas. 



Var. oligochseta, Gray, Bot. Calif. 1. c. Pappus reduced to the two marginal 

 awns (and these sometimes slender) and to some intermediate rudiments or small awns : 

 leaves less lobed. — Petaluma, Santa Rosa, aud elsewhere, north of Bay of Sau Francisco, 

 Neivberry, Bolander, &c. 



L. chrysanthemoides, Gray, 1. c. Akenes wholly glabrous, broader, M'ith no epigynous 

 disk (the Itase of corolla covering the top of the ovary) : no pappus: receptacle becoming 

 convex: otherwise quite like the preceding species. — Oxi/ura chnjsantlunnoides, DC. (in 

 Lindl. Syst. Nat. &) Prodr. v. 693, not of Bot. Reg. Tollatia chrijsantliemoides, Endl. Gen. 

 Suppl., & 'S\'alp. Repert. ii. 631. Hurtmannia ciliata, DC. Prodr. v. 694. — California, not 

 rare near San Francisco ; first coll. by Douglas. 



