162 COMPOSITE. 



plicate up to the nerve. — Linnaea, iv. 203 ; Gray in Benth. PI. Hartw. 315, 

 Proc. Am. Acad. vii. 351, viii. 364, & Bot. Calif, i. 306. — Flowering spring and 

 summer. 



# Flowers yellow, sometimes purplish in age ; some of the marginal ones with conspicuously larger 

 and more or less irregular and radiatiform corolla: bracts of the involucre with herbaceous tips: 

 akenes narrow, compressed, ^-3-nerved: style-branches truncate-obtuse, bearing a brush-like 

 tuft of bristles, in which a minute or obscure setiform tip is partly or wholly hidden : heads 

 about 3 lines high, terminating spreading slender branchlets. 



L. Germanorum, Cham. 1. c. Low and diffusely spreading from the base, or procumbent, 

 arachnoid-lanate with appressed white tomentum, glabrate with age; filiform flowering 

 branches sparsely leafy or naked : lower leaves spatulate and usually pinnatifid or incised, 

 with long tapering entire base ; those of the branches becoming linear and entire, all nar- 

 rowed at base : involucre hemispherical; its bracts with loose and foliaceous tips or the outer 

 foliaceous, all glaudless. — Torr. in "Wilkes Exped. xvii. 326, t. 7 (style bad); Gray in PL 

 Hartw. 1. c, & Bot. Calif. 307, only in part. — Open dry ground, near San Francisco and in 

 adjacent parts of California; first coll. by Chamisso. Corollas said by Chamisso to be 

 " croceous." 



L. glandulifera, Gray. Diffusely much branched from an erect stem, more rigid, above 

 glabrous or early glabrate: leaves more commonly entire, sometimes spinulose-dentate ; 

 those of the branches small and very numerous (3 to 1 lines long), or minute and almost 

 covering flowering branchlets, ovate-lanceolate or oblong, thick and rigid, commonly beset 

 along the margins with yellowish tack-shaped glands : involucre campanulate to turbinate ; 

 its bracts more appressed, the outer successively shorter, and some or all of them glandulif- 

 erous. — Proc. Am. Acad. xvii. 207. L. Germanorum in part, & L, ramulosa, var. tenuis, 

 Gray, Bot. Calif. 1. c., in part. — Arid grounds, from Monterey to San Diego, San Ber- 

 nardino, &c. ; common. The glands are like those of Calycadenia on a smaller scale, some- 

 times copious and strongly marked, sometimes few and inconspicuous. 



# * Flowers purple or white ; the corollas all alike and regular or nearly so : bracts of the involu- 

 cre with appressed or erect tips : akenes less or hardly at all compressed, 4-5-nerved. 



-I— Stems slender and loosely branching, erect - , a span to a foot or two high : white wool deciduous 

 in age : leaves oblong to lanceolate or the lower spatulate, entire or sparingly dentate, the small 

 upper with partly clasping or adnate base: involucral bracts mostly herbaceous-tipped. 



L. ramulosa, Gray, 1. c. Somewhat granulose- or hirtellous-glandular on the glabrate 

 branches and upper leaves, occasionally with some minute tack-shaped glands : stem usually 

 stout at hase : heads (3 or 4 lines long) terminating diffuse slender branchlets : involucre 

 campanulate or somewhat turbinate, 10-20-flowered : corollas short (purple) : style-append- . 

 ages with minute setiform tip. — On dry hills, not rare through the northwestern part of 

 California to Bay of San Francisco ; first coll. by Pickering and Brackenridge. 



Var. tenuis, Gray. A slender and ambiguous form, not thickened at base of stem, 

 low and diffuse, analogous to the depauperate states of the next species. — Bot. Calif, i. 307, 

 as to pi. of Rothrock in Wheeler Eep. vi. 364. — Southeastern California, at head of Peru 

 Creek, Rothrock. 



L. Iept6clada, Gray. Glabrous after denudation of the floccose wool: stem slender (the 

 taller forms 2 feet or more high, the most depauperate only 3 or 4 inches), and with long 

 virgate or filiform branches bearing solitary or few heads : upper leaves commonly with 

 sagittiform-adnate base : involucre turbinate, from 20-flowered down (in depauperate plants) 

 to 5-flowered ; its bracts in numerous ranks : corolla conspicuously exserted : style-append- 

 ages with a conspicuous subulate tip. — Proc. Am. Acad. vii. 351, & Bot. Calif. 1. c — Dry 

 ground, common through the western and central parts of California, in very diverse forms ; 

 sometimes with numerous heads spicately crowded along the summit of the branches, and 

 too nearly approaching the next. 



L. Virgata, Gray. More densely woolly: stem and virgate branches more rigid: upper 

 leaves appressed, concave, carinately one-nerved : heads spicately sessile, each in the axil of 

 a leaf of nearly the same length : involucre cylindrical, woolly, 5-7-flowered : style-branches 

 with a conspicuous subulate tip. — PI. Hartw. 1. c; Bot. Calif. 1. c — On the Sacramento, 

 probably in the northern part of the State, Pickering and Brackenridge, Newberry. 



