510 



composite:. 



spring scape-like flowering stems (with many scales or bract-like 

 leaves) and later ample radical leaves. Heads in a racemose corymb, 

 subdiceeious, i. e., the flowers on one plant perfect but mostly sterile, 

 the sterile flowers with tubular 5-clet't corolla and undivided style; 

 the flowers on another plant mostly fertile, the fertile flowers of two 

 kinds, perfect ones with tubular 2 to 5-cleft corolla and pistillate ones 

 with ligulate corolla, in both with style slightly cleft at apex. 

 Flowers whitish or pinkish. Achenes 5 to 10-ribbed. Pappus elongat- 

 ing in age, very soft and white. (Greek petasos, a broad-brimmed 

 hat, in allusion to the large leaves.) 



1. P. palmata (Ait.) Gray. Stem 7 to 10 in. high, glandular- 

 pubescent, its bract-like scales \\ to 2| in. long; leaves roundish in 

 outline, green and nearly glabrous above, densely white-tomentose 

 beneath, at least when young, 12 in. broad or less, palmately cleft to 

 below the middle into 7 to 10 lobes; lobes denticulate, sinuately 

 toothed or 3-lobed at apex; petioles 4 to 7 in. long; heads 7 lines high; 

 bracts of the involucre rather loose; marginal flowers of fertile head 

 ligulate, the style slender and perfectly glabrous; disk-flowers often 

 very unequal, with slender tube abruptly dilated at the throat, and 

 the style strongly thickened above and minutely roughened or papil- 

 late; flowers of substerile head not well known to us. 



Deep shades of wooded canons from the Santa Cruz Mountains 

 (Loma Prieta, Forest Grove, Saratoga) to Sonoma Co., Ukiah, and 

 northward. Mar. 



24. CACALIOPSIS Gray. 



Floccose-woolly perennials with mostly radical palmately cleft or 

 parted leaves and few large rayless heads of numerous flowers ter- 

 minating the stoutish stems. Involucre broadly campanulate, its 

 bracts many, linear-lanceolate, acuminate, rigid rather than herba- 

 ceous. Receptacle naked. Anthers entire at base. Style puberulent 

 below the slightly flattened branches. Achenes 10-nerved. Pappus 

 copious, soft and white, equaling the corolla. (Greek kakalia, ancient 

 Greek name of some plant, and opsis, likeness.) 



1. C. Nardosmia Gray. One to \\ ft. high; leaves palmately 

 parted or cleft, the divisions broad, cleft or toothed, the radical 1\ to 

 3} in. broad on petioles 1\ to 4 in. long, the cauline few. similar to 

 the radical but smaller; heads about 1 in. high, corymbosely disposed 

 at the nearly naked summit of the stem; flowers yellow, honey- 

 scented. — (Adenostyles Nardosmia Gray.) 



Near the Geysers, Sonoma Co. ("in a pine grove; not common," 

 Bola?ider, 1864); Mendocino and Humboldt Cos. and northward. 

 Apr.-Mav. 



25. LUINA Bentham. 

 Cottony-pubescent low plants with many erect simple stems. 

 Leaves alternate, entire, sessile. Heads ray less, about 10-flowered, 

 disposed in terminal corymbs. Flowers yellow. Involucre oblong- 

 campanulate, its bracts 8 to 10 or 12, linear, rigid, carinately 1-nerved, 

 equal. Receptacle naked. Corolla funnelform. Anthers sagittate 



