420 COMPOSITE. Microseris. 



lovii, Gray, Pacif. R. Rep. iv. 164, t. 17. — Common in the district around San Francisco 

 Bay, California, and soutii to Tulare Co.; first coll. by Bigelow. 



M. Douglasii, Gray. Rather coarser : scapes 8 to 20 inches high : head broad : akenes 

 oblouo-tiirbinate, thickish, obviously contracted under the summit, nearly 3 lines lou<i- ; 

 outermost u.sually white-villous : palere of the pappus ovate to orbicular (2 lines high and 

 often as wide), firm-scarious, commonly imbricated or convolutely overlapping, abruptly 

 acute or retuse at the apex, a half or a third the length of the awn, sometimes glabrous, 

 sometimes densely villous outside. — M. Donglasii & j\[. cijclocarphn, with var. erlocarjiJin, 

 Gray, Proc. Am. Acad. ix. 210. Calais Douglasii, DC. Prodr. vii. 8.5; Hook. & Am. Bot. 

 Beech. 361. C. cijdocarpha, Gray, Pacif. R. Rep. iv. 115, t. 18. C. eriocarplia. Gray, Proc. 

 Am. Acad. vi. 552. — W. California, from Humboldt Co. to San Francisco Bay, and south- 

 ward ; perhaps first coll. by Douglas. 



M. platycarpha, Gray, 1. c. A span to a foot high, slender : head half-inch or less high : 

 proper liracts of involucre rather few and broad (oblong) : akenes turbinate, tapering grad- 

 ually from the broad summit to base ; outermost densely short-villous : paleaj of the pappus 

 ovate, 2 lines long, somewhat longer than the akene, abruptly acuminate into a short awn or 

 cu.sp. — Calais platijcarpha, Gray, Pacif. R. Rep. 1. c. — Hills around San Uiego and San 

 Luis Rey, Parry, Cleveland, Pringle, &c. (Lower Calif., Parrij, &c.) 



§ 4. NothocXlais. Pappus of 20 to 24 narrowly linear-lanceolate silvery- 

 white palesB, occupying two or more series, with obscure mid-nerve, very grad- 

 ually attenuate into a slender awn : akenes attenuate-fusiform : seed not reaching 

 to the tapering summit : bracts of the oblong-campanulate involucre narrowly lan- 

 ceolate, nearly equal, in about two series : perennial from a thick caudex. Inter- 

 mediate between Microseris and Troximon ! — Gray, Proc. Am. Acad. xix. 65. 



M. troximoides, Gray. Acaulescent or nearly so: leaves tufted on the caudex, rather 

 fiesliy, narrowly linear-lanceolate, entire or undulate, 4 to 6 inches long : scapes a span to a 

 foot high: involucre three-fourtlis inch high: ligules somewhat elongated: mature akenes 

 half-inch long : pappus somewhat longer, its almost setiform palea; a quarter of a line wide 

 below. — Proc. Am. Acad. ix. 211. — Wooded hills and opeu plains, Montana and Idaho 

 (first coll. by Spalding), Washington Terr, and Oregon to N. W. California. 



220. LE6NT0D0N, L. partly, Juss. PIaavkbit. (Aewr, lion, oSoi;'?, 

 tooth, from the toothed leaves.) — Low perennials of the Old World, one natural- 

 ized in N. E. America, belonging to section Oporinia, Koch, having simple pap- 

 pus of a single series of plumose bristles, and the unojiened heads not drooping. 



L. AUTUMXALis, L. (Fall Daxdeliox.) Short rootstock or caudex pra?morse : leaves 

 lanceolate, more or less pinnatifid, somewhat pubescent with simple hairs: scapes 5 to 15 

 inches high, sometimes simple, commonly once to thrice forked : peduncles clavate-thickened 

 under the pubescent much calyculate involucre : akenes all alike. — Apargia antuwmdis, 

 Hoffm. Fl. Germ. iv. 113 ; Schk. Handb. t. 220 ; Pursh, Fl. ii. 497. Oporinia aiUitmnaUs, Don 

 in Fdiub. Phil. Jour. vi. 309 ; DC. Prodr. vii. 108. — In grassy grounds, Newfoundland to 

 E. New England and sparingly to Penn. ; fl. June to Nov. (Nat. from Eu.) 

 L. nisPTDUs, L., with double pappvis, the outer of short naked bristles, and L. ihrtus, L., 



with both kinds of bristles ])lumose, and a paleaceous crown to outermost akenes, are sparing 



ballast-weeds at the ports of New York and Philadelj)hia. 



220^ PICRIS, L. (Greek name for some bitter herb of this suborder, 

 from TTiKpos, bitter.) — Leafy-stemmed and coarse herbs, chiefly biennials or annu- 

 als, and of the Old World, with aspect of the larger kinds of Hieracium, rough- 

 bristly, yellow-flowered. — Benth. & Hook. Gen. ii. olL Pier is & Helmintha, 

 Juss. Gen. 170. 



P. HiERACioiDES, L. Rather tall, liispid, and some of the bristles minutely glochidiate, 

 corvmbosely branched : leaves lanceolate or broader, with partly clasping base, irregularly 



