162 COMPOSITE. Lessingia. 



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

 Proc. Am. Acad. vii. 351, viii. 364, & Bot. Calif, i. 30G. Flowering spring and 

 summer. 



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

 and more or less irregular and nidiatifor.n corolla: bracts of the involucre with herbaceous tips: 

 akenes narrow, compressed, 2 'i-nerved : style-branches truncate-obtuse, bearing a brush-like 

 tuft of bristles, in which a minute or obscure sctifonu 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, 

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

 branches sparse! v leafv or naked: lower leaves spatulate aud usually piunatifid 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 Expcd. xvii. 326, t. 7 (style bad); Gray iu PI. 

 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, GRA.T. 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 brauchlets, 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. ranuilosa, var. tennis, 

 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 aud inconspicuous. 



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

 cre with appre>sed or erect tips : akenes less or hardly at all compressed, 4-o-nerved. 



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

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

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



L. ramulosa, GRAY, 1. c. Somewhat granulose- or hirtollous-glandular on the glabrate 

 branches and upper leaves, occasionally with some minute tack-shaped glands: stern usuallv 

 stout at base: heads (3 or 4 lines long) terminating diffuse slender brauchlets : involucre 

 campanulate or somewhat tnrlmiate, 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 P'n-L-< rim/ and Brackenridyc. 



Var. tenilis, 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 Hothrock in Wheeler Rep. vi. 364. Southeastern California, at head of Peru 

 Creek, notlu-nrk. 



L. leptodada, GI;AY. 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 iu 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, iu very diverse forms; 

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

 too nearly approaching the next. 



L. virgata, GKA.Y. More densely woolly: stem and virgate branches more rigid: upper 

 leaves apprised, concave, carinately one-nerved: beads 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. llartw. I.e.; Bot. Calif. I.e. On the Sacramento, 

 probably in Ibe northern part of the State, Pickeriny and Brackenridye, Neuubernj. 



