SUNFLOWER FAMILY. 445 



tacle point less, soft, hairy ; ray-achenes flattened laterally, nearly semi-circular 

 in outline, smooth; pappus of disk-achenes of 9 to 11 linear paleae as long 

 as the corolla and hairy and fimbriate at the tip. — (Hemizonia fitchii Gray.) 

 High sandy land in the valleys and foothills: Sierra Nevada foothills and 

 the lower San Joaquin northward through the Sacramento Valley and west- 

 ward to Napa, Sonoma and Mendocino cos. Aug.-Sept. 



50. CALYCADENIA DC. Rosin Weed. 

 Erect annuals, hirsute or hispid or almost glabrous. Stems simple, or with 

 virgate branches, or repeatedly branched. Leaves all entire, narrowly linear, 

 becoming filiform by revolution of the margins, at least those near the heads 

 and those of the fascicles in the axils bearing at apex tack-shaped or saucer- 

 shaped glands. Heads oblong or narrow. Flowers white or yellow. Kay-ftowers 

 few (1 to 5 or 8), the ligules broad and palmately 3-lobed or -parted; ray- 

 achenes obovoid-triangular, the areola at summit quite or nearly in the center ; 

 pappus none. Disk-flowers surrounded by a circle of bracts connate into a 

 cup, or at length separating; disk-achenes with conspicuous paleaceous pappus. 

 (Greek kalux, covering, and adenos, a gland, on account of the glands on the 



involucre.) 



Ravs 5 to 8; flowers yellow; plants for the most part very glabrous 1. C. truncata. 



Rays 1 to 5. 



Flowers white or reddish-tinged. 



Stems repeatedly branched; branches filiform 2. C. pauciflora. 



Stems simple or with virgate branches. 



Pappus-paleae unequal; floral leaves not truncate...: 3. C. multigland.ulosa. 



Pappus-paleae subequal; floral leaves truncate 4. C. spicata. 



Flowers yellow; stems simple 5. C. hispida. 



1. C. truncata DC. Rosin Weed. Stems 1 to 3 ft. high, reddish brown, 

 simple below, branching below, branching above into a panicle of long straight 

 slender branches along which the heads are scattered ; herbage glabrous or the 

 linear and entire leaves somewhat hirsute-ciliate ; smaller leaves with subsessile 

 glands at apex; heads oval, 4 or 5 lines long; rays 5 to 8, broad, 4 to 5 lines 

 long; ray-a^h^nes glabrous, triangular, roughish and enclosed in boat-shaped 

 bracts; bracts of the receptacle lightly cohering to the top into a cup, separat- 

 ing in age; disk-flowers 10 to 20; pappus of 7 to 10 unequal oblong fimbriate 

 paleae shorter than the achene, or rarely obsolete. — (Hemizonia truncata Gray.) 



Marin and Xapa cos. northward to Shasta Co., thence southward in the 

 Siena Nevada to El Dorado Co. 



2. C. pauciflora Gray. Branching freely, 10 to 18 in. high, the branches 

 diverging or zigzag and filiform; herbage sparingly hairy and leaves (partic- 

 ularly about the heads or of the axillary fascicles) stipitate-glandular ; heads 

 oblong, scattered along the branches (subsessile in the axils or forks, as well 

 as terminal), always solitary; flowers white or rose-tinged; rays 1 or 2, 

 3-parted; disk-flowers 3, contained in a 3-lobed cup; pappus of 5 subulate- 

 awned paleae and 5 small truncate paleae; ray-achene glabrous. — (Hemizonia 

 pauciflora Gray.) 



.Mountain sides of the inner North Coast Range from the Vaca Mts. north- 

 ward to the Clear Luke region, duly- Aug. 



3. C. multiglandulosa DC. Sparingly hirsute or hispid, especially toward 

 the base of the leaves, n' to 11 (or 1(5) in. high; herbage with a pleasant bal- 

 Bamic odor, the floral leaves and involucre glandular with stipitate glands; 

 leaves filiform-linear, mostly straight and rigid but brittle, the upper somewhat 

 divaricately Spreading and mostly 2 or 3 tunes longer than the heads and 

 floral leaves in the axils; heads solitary in tin.' axils or crowded towards or 



