Bahia. ■ COMPOSITE. 381 



* * Heads larger, solitary, terminating naked peduncles: scales of the involucre oval 

 or oblong : stuns herbaceous or nearly so, mostly numerous from the root, erect or 

 ascending from a decumbent bast ; the while wool usually floccose and copious: lower 

 leaves often opposite, the others alternate. 



-f- Leaves narrow or cut into narrow lobes : akenes mostly slender: pappus conspicu- 

 ous, of 8 or 10 oblong or oval scales, the alternate ones commonly shorter or 

 small- r. 



3. B. lanata, DC. A foot or two high, slender : leaves pinnately cleft or parted 

 into 3 to 7 lanceolate or linear lobes, which are entire or sometimes again few-lobed 

 or incisely toothed ; uppermost and lowest leaves often undivided : peduncles slen- 

 der : rays mostly 8 or l J, oblong, conspicuous: akenes glabrous or minutely hirsute- 

 puberulent. — B. lanata, tenuifolia, leucophylla, & achillceoides, DC Achillea 

 lanata, Pursh. Trichophyllum lanatnm, Nutt. Selenium lanalum, Spreng. Eri- 

 ophyllnm ccespitosum, DougL in lint. Peg. t. 1167, one of the broader leaved forms. 

 The following are some of the varieties or forms of this polymorphous species : first 

 taking for the type Pursh's and Xuttall's original, from the interior of ( hvgon, Arc. ; 

 with middle-sized heads, glabrous and shortish akenes, and narrowly or ligulate- 

 linear lobes to the leaves. B. leucophylla, DC, is founded on a form of this, with 

 leaves rather laciniate-toothed or cleft than pinnatilid, and the wool more persistent 

 mi the upper surface. 



Var. tenuifolia, Torr. & Gray (B. tenuifilia. DC), is merely the most slender 

 form, simple-stemmed, with very narrow lobes to the leaves, and small heads. 



Var. grandiflora : has larger beads, the involucre (at most half an inch high) 

 densely clothed with persistent wool: akenes sparsely hirsute-puberulent : leaves 

 usually retaining the wool on both sides, and few-lobed or laeiuiate, or the upper 

 linear and entire. — B. leucophylla, Torr. & Gray, in part. B. lanata, Benth. PI. 

 Hartw. 317. 



Var. achillaeoides (//. achillazoides, DC), with branching leafy stems, more or 

 less laciniately bipinnatifid leaves, middle-sized or small heads, and minutely hir- 

 sute-puberulent (sometimes glabratc) akenes. 



Var. brachypoda : a stout form, with thickish and obovate leaves pinnatifid 

 into short linear-oblong (entire or 1 - 2-toothed) lobes, some of the upper opposite : 

 leads rather small, corymbose-clustered or in threes on short or shortish peduncles: 

 akenes glabrous or nearly so. 



Common in California, especially northward near the coast, extending to Pnget Sound and the 

 interior of Oregon ; the typical form not seen south of I'kiah. Var. grandiflora, on hillsides, 

 along the Sacramento and its tributaries, [A form between this and the next variety, Guadalupe 

 Island off Lower California, Dr. Palmer.) Var. achiUamdes, near San Francisco and northward. 

 Var. ' , Mi, the sea-coast at Shelter Cove, Mendocino Co. ; o sea-side and seemingly 



i cli i Abnormal form, perhaps of De Candolle's /.'. leucophylla. Receptacle varying from convex 

 to decidendi) conical; bu1 the differences in this respect not correlated with the other very 

 variou difl ten es in foliage, size of the head, smoothness or otherwise of the akenes, &c. Tube 

 of the corolla mostly glandular-hirsute, sometimes besel with almost sessile glands. Scales of the 

 pappus varying from oval to broadly linear, sometimes of two lengths and forms, sometimes all 

 nearly alike. It seems impossible to distinguish the forms here indicated into species. 



■i. B. integrifolia, DC. About a span high, in tufts: leaves varying Erom 

 linear fco spatulate, entire, incisely few-toothed, or the lower and more dilated ones 

 3-5 lobed : leads rather small or middle-sized : rays 6 to 8 : disk corollas minutely 

 glandular, especially the tube: akenes glabrous, or sometimes obscurely glandular 

 t 'wards the summit. Trichophyllum multiflorum, Nutt. in .lour. Acad. Philad. vii. 

 .'.7. T. integrifolium, Book. I-'l. i. 316. Bahia leucophylla, Torr. & Gray, in part. 

 B. cuneata, Kellogg in Proc. Calif. Acad. v. 49, a form with more toothed or 



I bed leaves. 



High Sierra Nevada, al or above B, feet, from Mono Pass northward, through Neva. la and 



the interior of Oregon, to the Rocky Mountains. Involucre 8 or 4 lines high. Reccptadi vary- 



