382 COMPOSITE. Bahia. 



ing from convex to low conical. B. integrifolia is the older specific name under tins genus, and 

 the better one, although Trichophyllum multiftorum was earlier published. 



5. B. gracilis, Hook. & Arn. A span or so in height, branched from the base, 

 slender : leaves narrowly linear and entire, or dilated above and 3-parted or 3-lobed : 

 heads slender-peduncled, rather small : rays 5 to 7 : disk-corollas and akenes conspicu- 

 ously glandular. B. leucophylla, in part, Eaton in Watson, Bot. King Exp. 173. 



Known thus far only from Snake Fort, interior of Oregon (Tolmie), and the not remote 

 Robert's Station, Nevada, Watson. Tolmie's plant has simple entire leaves, as fur as known, 

 head rather large in proportion, the involucre 4 lines high, and the receptacle low convex. The 

 variety collected by Watson is canescent with fine appressed wool, leaves mainly 3-paited, nar- 

 rower and rather smaller heads, and a narrower conical receptacle. It is likely to occur, in one or 

 both forms, in the northeastern part of the State. 



-t- -t- Leaves mostly broader and with short and broader lobes : pappus very short, 

 sometimes obsolete or wanting 1 



6. B. arachnoidea, Fischer & Meyer. A foot or two high, loosely branched, 

 disposed to become rather woody at base, clothed with loose floccose wool : leaves 

 dilated, varying from rhombic or cuneate in outline to oblong-lanceolate, mostly 

 thin, 3 5-lobed or incised ; the lobes or coarse teeth mostly oblong : involucre 

 broadly campanulate or hemispherical (3 or 4 lines high): rays 10 to 13, large: 

 disk-corollas with very glandular-hirsute tube : receptacle low convex or sometimes 

 more elevated : akenes comparatively short and thickish, hardly longer than the 

 disk-corolla : pappus of few or several very short scales, sometimes however longer 

 than the breadth of the akene, sometimes almost or quite obsolete. Gray, PI. 

 Fendl. 100. B. latifolia, Benth. Bot. Sulph. 30. 



Open and shady places, especially among Redwoods, common near the coast from Santa Cruz 

 to Mendocino Co. Leaves more frequently opposite on the lower part of the stem and on sterile 

 shoots than in the other species. Pappus sometimes reduced to a mere border, or even wanting 

 altogether. In a specimen of this sort, collected by Bolander in the Mariposa Sequoia grove, 

 quite beyond the ordinary range of this species, the leaves on the low flowering stems are un- 

 usually narrow, so that the plant might almost be taken for an epappose state of B. integrifolia. 

 But the proper tube of the disk-corolla, as usual in the present species, is densely very hirsute 

 with many-jointed and seemingly glandular hairs. 



7. B. parviflora, Gray. A span or less high, diffusely branching, floccose- 

 woolly, slender : leaves linear-oblong or spatulate, 3 - 5-lobed, or the upper entire, 

 from half to a quarter of an inch or less in length : involucre narrow, only 2 lines 

 long : rays 5 or 6, hardly longer than the disk : disk-corollas nearly glabrous : 

 receptacle conical : akenes somewhat fusiform, the outermost minutely hirsute, the 

 inner glabrous : pappus of short nearly equal scales. B. Wallacei, Gray in Proc. 

 Bost. Soc. Nat. Hist. vii. 145, not of Pacif. E. Eep. 



Near Fort Tejon, Xantus. The smallest of the genus. 



2. Annual, flocculose-woolly : leaves alternate, entire : scales of the involucre united 

 by their margins into a campanulate 8 - 9-lobed clip : style-branches truncate : 

 scales of the pappus wholly nerveless. PSEUDO-MONOLOPIA, Gray. 



8. B. ambigua, Gray. More than a span high, slender, loosely branched ; the 

 branches terminated by slender-peduncled small heads : leaves spatulate-linear or 

 oblanceolate, entire, tapering to the base, sessile : receptacle conical, narrow : rays 

 8 or 9, oval, hardly exceeding the ovate-lanceolate lobes of the involucre : tube of 

 disk-corollas hirsute : akenes linear or the outermost oblong-linear, prismatic, 

 glabrous, or the outer ones slightly hairy : pappus a crown of 6 to 9 very short 

 and obtuse hyaline scales, or sometimes none. Lasthenia (Monolopia) ambigua, 

 Gray, Proc. Am. Acad. vi. 547. 



Near Fort Tejon, Dr. Horn, 1864. Not since met with. Leaves less than an inch long, 2 

 lines or less wide. Involucre about 3 lines long ; the scales strictly in a single series and united 

 for two thirds of their length into a rather narrow campanulate cup. Receptacle minutely scro- 



