BaMa. COMPOSITyE. 381 



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

 or oblong : stems herbaceous or nearly so, mostly itumerous from the root, erect or 

 ascending from a decumbent base ; the white wool usually floccose and copious : lower 

 leaves often opposite, the others alternate. 



-{- Leaves narroio or cut into narrow lobes : akenes mostly slender: j^fipi^us conspicu- 

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

 smaller. 



3. B. lanata, DC. A foot or two higli, .slender : leaves pinnately cleft (jr 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 9, oblong, conspicuous : akenes glabrous or minutely hirsute- 

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

 lanata, Pursh. Trichophyllum lanatum, Nutt. Heleniiim lanatum, Spreng. Uri- 

 ojihyllum ccespitosum, Dougl. in Bot. Eeg. t. 11 G 7, one of the broader leaved forms. 

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

 taking for the type Pursh's and Nuttall's original, from the interior of Oregon, &c. ; 

 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 

 on the upper surface. 



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

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



Var. grandiflora: has larger heads, 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 laciniate, or the upper 

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

 Hartw. 317. 



Yar. achillceoides {B. achillceoides, DC), with branching leafy stems, more or 

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

 sute-puberulent (sometimes glabrate) 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 : 

 heads 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 Sonnd and the 

 interior of Oregon ; the typical form not seen south of Ukiah. Var. (jrmuh'florn , on hillsides, 

 along the Sacramento and its tributaries. (A form between this and the next variety, Guadalujie 

 Island off Lower California, Dr. Palmer.) Var. ac/iill ceo ides, near San Francisco and northward. 

 Var. brachypoda, on the sea-coast at Shelter Cove, Mendocino Co. ; a sea-side and seemingly 

 rather abnormal form, perhaps of De Candolle's B. leucophylla. Receptacle varying from convex 

 to decidedly conical ; but the differences in this respect not correlated with the other very 

 various differences in foliage, size of the head, smoothness or otherwise of the akenes, &e. Tube 

 of the corolla mostly glandular-hirsute, sometimes beset 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. 



4. B. integrifolia, DC. About a span high, in tufts : leaves varying from 

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

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

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

 towards the summit. — Trichophyllum multiflorum, Nutt. in Jour. Acad. Philad. vii. 

 37. T. integrifolitim. Hook. Fl. i. 316. Bahia leucophylla, Torr. & Gray, in part. 

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

 lobed leaves. 



High Sierra Nevada, at or above 8,000 feet, from Mono Pass northward, through Nevada and 

 the interior of Oregon, to the Kocky Mountains. Involuci-e 3 or 4 lines high. Iluccptacle vary- 



