Monolopia. COMPOSITE. 323 



equalling or surpassing the sessile heads : involucre of about 8 narrowly oblong bracts, sub- 

 tending as many ray-flowers : ligules hardly exceeding the disk : disk-corollas 5-toothcd : 

 akeues all compressed and with only marginal callous nerves, linear oblong, the dark faces 

 polished and shining, the comose long and soft villous hairs of the margin bright white : 

 pappus a pair of comparatively large opaque paleai, of broadly ovate or quadrate form (the 

 insertion of the two occupying the whole circumference of the akene), sparingly laciuiate- 

 dentate or erose at summit, and the middle produced iuto a subulate naked awn which nearly 

 equals the 4-toothed corolla. Burrielia nirca, 1). C. Eatou, Bot. King Exp. 1 74, t. 18. Acti- 

 nolepis (Eatonclla) nii-ca, Gray, Bot. Calif, i. 379. Sterile hills of the eastern side of the 

 Sierra Nevada ; in the Pah-Ute Mts., Nevada, Watson, aud Surprise Valley, E. California, 

 Lemmon. 



E. Congdoni, GRAY. A span or two high, loosely branching, sparsely leaved, floccosely 

 lauate : leaves-oblong linear, sparsely sinuate-dentate or repand : heads short-peduncled or 

 nearly sessile at the summit of the stem : involucre of 5 or 6 oval-oblong herbaceous bracts : 

 ray-flowers none : disk-corollas 4-toothed : akenes oval (the faces at first pubescent, at length 

 glabrate), the outermost triangular-obcompressed, the others compressed and flat: pappus of 

 2 to 4 very thin and hyaline erose-laciuiate awnless paleu.', not exceeding the long villosity, 

 forming a crown. Proc. Am. Acad. xix. 20. California, at Deer Creek, Tulare Co., Cong- 

 don, and on the San Joaquiu, Parry. 



138. MONOLOPIA, DC. (MoroAovros, single husk, alluding to the 

 uniserial involucre.) Annual herbs, California!!, clothed with lloccose wool ; 

 with alternate (or only lower sometimes opposite) sessile leaves, and compara- 

 tively large pedunculate heads of golden yellow flowers terminating the stem and 

 few branches. --Prodr. vi. 74; Hook. Ic. PI. t. 343, 344. Spiridanthes, Fenzl 

 in Endl. Gen. Suppl. ii. 105. 



1. MONOLOPIA proper. Ray -corollas with ample coarsely 3-4-toothed or 

 lobed ligule, and bearing at base on the opposite side of the style a roundish 

 denticulate appendage : leaves undivided, strictly sessile or partly clasping by a 

 broadish base. Bot. Calif, i. 383. 



M. major, DC. 1. c. A foot or two high, rather stout aud simple; the floccose white wool 

 tardily deciduous : leaves from linear to lanceolate-oblong, repaud-serrate to entire : bracts 

 of the broad (half-inch high) involucre united to above the middle, the lobes triangular- 

 ovate: ligules 6 to 10 lines long: akenes glabrous or nearly so at maturity. Hook. Ic. PI. 

 t. 344, & Bot. Mag. t. 3839 ; Gray, Bot. Calif. 1. c. Hologymne Doiiylusii, Fisch. & Meyer, 

 Ind. Sem. Hort. Petrop. viii. 64. Common in low ground, through W. California. 



Var. lanceolata, GRAY, Bot. Calif. 1. c. A mere form, with bracts of involucre dis- 

 tinct to near the base. J\f. lanceolata, Nutt. PI. Gamb. 175. Near Los Angeles, &c. 



M. gracilens, GRAY. A foot or more high, slender, loosely paniculately branched, bearing 

 scattered small heads : involucre only quarter-inch high ; its oval or ovate bracts distinct to 

 the base: akenes only a line long. Proc. Am. Acad. xix. 20. California in the coast 

 ranges, near New Almaden and Santa Cruz, Dolander, Torrey, Jsaman, Pringle. 



2. PSEUDO-BAIIIA. Ray-corollas destitute of internal appendage, barely 

 3-toothed at apex : leaves all alternate, commonly laciniately cleft, narrowed at 

 base into more or less of a petiole. Bot. Calif. 1. c. 



M. minor, DC. 1. c. Loosely lanate, a span or more high : cauline leaves 3-5-cleft into 

 linear lobes: heads 3 lines high: bracts of the involucre about 10, somewhat in 2 series, 

 oblong, separate to below the middle: ovary glabrous. Hook. Ic. PI. t. 343. California, 

 Douglas. Not since detected. 



M. Heermanni, DURAND. Whitened with a close and fine flocculent tomentum, which is 

 deciduous, the foliage glabrate and green in age, a span or two high, branching : leaves 

 pinnatifid or pinnately parted into linear lobes or divisions, or some of the cauline bipin- 

 natifid : heads 3 or 4 lines high : involucral bracts distinct nearly to base : akenes sericeous- 

 puberulent or glabrate. PI. Pratten. in Jour. Acad. Philad. ser. 2, iii. 93. M. bahiaefolia, 



