168 COMPOSITAE. 



Bandy hills along the coast: San Francisco to San Luis Obispo Co. Sept.- 

 Oct. 



2. L. glandulifera Gray, stem erect, Btoutish, paniculately very much 

 branched, l'_. to 3 ft. high; Leaves ovate or oblanccolate, toothed or cleft, 



tently woolly, those of the branchlets aumerous and even crowded, 

 green) minute, with the margin bearing yellowish glands; involucre campan- 

 ulate, its bracts more or less gland-bearing; heads 18 to 38-flowercd ; pappus- 

 bristles of disk-flowers as long as corolla, about 35; pappus-bristles of ray 

 shorter than corolla. 



Plains of the lower San Joaquin Valley to Southern California. Aug. -Sept. 



3. L. ramulosa Cray. Stems slender, 1 to 1% ft. high, loosely branching, 

 granulose-glandular above or with minute tack-shaped glands; lowest leaves 

 spatulate or oblong, denticulate or entire; upper lanceolate, mostly entire, 

 those of the branchlets with partly clasping base; heads lo to 25-flowered, .'5 

 or 4 lines long, terminating diffuse slender branchlets; involucre turbinate or 

 campanulate; corollas short, purple; pappus-bristles longer than the achene, 

 20 or more, sometimes more or less coalescent at base into sets. 



Dry hills of the North Coast Ranges: Mt. Tamalpais; Cordelia; Napa Range 

 and northward. Sept. 



4. L. virgata Gray. Stem and virgate branches rigid ; herbage more 

 densely woolly; upper leaves appressed, concave, carinately nerved; heads soli- 

 tary and sessile in the axil of a leaf of nearly the same length, thus forming 

 a somewhat spicate inflorescence; involucre cylindrical, woolly, 5 to 7-flowered. 



Plains of the Sacramento Valley. 



5. L. leptoclada Gray. Simple below, branching above, 2 ft. high; lower 

 haves denticulate, those of the branchlets ovate or lanceolate with somewhat 

 sagittately adnate base; branchlets virgate and almost filiform, bearing few 

 or solitary heads; involucre turbinate; bracts in many ranks, greenish at tip 

 and cuspidate; corollas conspicuously exserted. 



San Mateo Co. and northward. 



6. L. hololeuca Greene. Stem erect, with rigidly ascending branches, near- 

 ly 2 ft. high, the whole plant even to the involucres white-tomentose ; leaves 

 all entire, the basal ones spatulate and narrowed to a long petiole; caul i no 

 Leaves oblong or ovate, sessile and almost cordately clasping; rameal ones 

 small: all the haves and the bracts of the involucre ending in a short spinoscent 

 tip; heads turbinate; corollas red-purple; pappus-bristles rufous. 

 Low hills of Sonoma Co., Greene. Perhaps too near L. virgata. 



7. L. adenophora Greene. Repeatedly branched from the base, forming a 

 densely bushy plant 1 ft. high or a little more; lower leaves round-ovate to 

 oblong, somewhat cordately Bessile, densely woolly above, glabrate beneath; 

 margins of the Leaves (particularly of the upper) densely beset with small 

 stipitate glands; heads numerous, 7 to LO-flowered, on filiform branchlets; 

 bracts of the narrowly campanulate or almosl cylindrical involucres very 

 acute, suberect, more or less glandular like the leaves, the inner chartaceous, 

 purplish, bristle-pointed; corollas red-purple; pappus-bristles united into t 

 to 7 paleaceous Bets, each set composed of n single stout bristle or of \l or 3 

 bristles, united for nearly their whole Length, or only at base. 



Mountains of the North Toast Ranges: northern Napa Co.; Lake Co.; 

 Colusa Co. July-Aug. 



8. L. nana Cray. Depressed, dwarfish, the whole plant densely tomentose 

 with thick wool; stems L' to 1 in. long. Il<>\\ ering from near the ground; heads 



LO to il' (lowered and oearly c. in. long, subtended by oblong or lanceolate 



