Part 2, 1915] CARDUACEAE: HELENIEAE 97 



55. ACTINOLEPIS DC. Prodr. 5: 655. 1836. 



Low villous-floccose annual herbs, diffusely branched from the base. Leaves alternate, 



spatulate, 3-toothcd or 3-lobed at the apex. Ik-ads radiate or discoid, sessile, leafy-bl 

 in small clusters at the ends of the branches. Involucre campanulate; bracts few, 5-7, elliptic, 

 boat-shaped and partly enclosing the marginal achenes. Receptacle ll.it . Ray-flowers, if pres- 

 ent, 3-7, pistillate and fertile; ligules yellow, obovate, short. Disk-flowers several, hermaph- 

 rodite, fertile or sterile; corollas yellow; tube glandular or pubescent', shorter than the campanu- 

 late throat; lobes 5, ovate. Anthers with ovate obtuse tips. Achenes 4-.5-angled, striate, 

 narrow, gradually tapering towards the base. Pappus of 5-12 membranous squamellae, 

 laciniate-cleft into short bristle-like divisions. 

 Type species, Actinolepis mitlticaulis DC. 



Rays present; squamellae shorter than the corolla-tube. 1. .1. multicaulis. 



Rays wanting; squamellae fully equaling the corolla-tube. 2. A. Pringlei. 



1. Actinolepis multicaulis DC. Prodr. 5: 656. 1836. 



Eriophyllitm multicaule A. Gray, Proc. Am. Acad. 19: 24. 1883. 



A diffusely branched annual; branches numerous from the base, decumbent or ascending, 

 5-25 cm. high, loosely floccose; leaves 1 cm. long or less, spatulate, mostly with 2 or 3 rounded 

 teeth or lobes at the apex, loosely floccose, in age often glabrate; heads sessile at the ends 

 of the branches, leafy-bracted, usually in small clusters; involucre campanulate, 3-4 mm. high, 

 3 mm. broad; bracts 5-7, elliptic, strongly boat-shaped, densely villous; ray-flowers 3-7; 

 ligules yellow, obovate, 2 mm. long, 1 mm. wide; disk-corollas scarcely 2 mm. long; tube 

 pubescent, fully as long as the campanulate throat ; pistils in some or all flowers often abortive; 

 achenes 2 mm. long, pubescent or in the sterile flowers glabrate and abortive; squamellae of 

 the ray-flowers about 5, lanceolate, split on the margin and apex into half a dozen short 

 bristles of which the terminal one is the longest; squamellae of the disk-flowers more numer- 

 ous, narrower and each with fewer bristles, those of the abortive achenes usually wanting. 



Type locality: California. 



Distribution: Southern California and Arizona. 



Illustrations: Hook. Ic. pi. 325; Mex. Bound. Surv. Bot. pi. 33. 



2. Actinolepis Pringlei (A. Gray) Greene, Fl. Franc. 441. 1897. 



Eriophyllum Pringlei A. Gray, Proc. Am. Acad. 19: 25. 1883. 



A diffusely branched annual; stems 1-5 cm. high, loosely villous; leaves spatulate, 1 cm. 

 long or less, long- villous, 3-lobed at the apex ; heads densely white-villous, tomentose, clustered 

 at the ende, leafy-bracted; involucre campanulate, about 6 mm. high and 5 mm. broad; 

 bracts 6-S, elliptic, boat-shaped; rays wanting; corollas 2.5 mm. long, the glandular tube 

 longer than the campanulate throat; achenes densely brown -hoar}', 2 mm. long; squamellae 

 about 10, silvery, lanceolate, cleft into several short bristle-like divisions. 



Type locality: Mohave Desert, California. 

 Distribution: Southern California and Arizona. 



56. ANTHEROPEAS Rydberg, gen. nov. 



Low floccose annual herbs, branched at the base. Leaves alternate, spatulate to linear- 

 spatulate, entire or 3-toothed. Heads radiate, short-peduncled, solitary at the ends of the 

 branches. Involucre campanulate; bracts 5-9, elliptic, distinct or nearly so, concave and 

 slightly enfolding the ray-achenes. Receptacle strongly convex or low-conic, obtuse, naked. 

 Ray-flowers 5-9, pistillate and fertile; ligules yellow, white or tinged with rose or purple. Disk- 

 flowers about 20, hermaphrodite and fertile; corolla-tube glandular or pubescent, about equaling 

 the campanulate throat. Anthers with subulate tips. Style-branches obtuse or with conic 

 tips. Achenes elongate, narrow, 5-angled, gradually tapering downward. Pappus of 6-12 

 opaque squamellae, either all elliptic and obtuse or those of the angles linear-lanceolate and 

 produced into an awn-tip, or rarely wanting. 



Type species, Bahia Wallacei A. Gray. 



