Parti, 1914 J CARDUACEAE : HEIvENIEAE 75 



corollas 4-10, glandular-granuliferous ; tube 1 mm. long; throat trumpet-shaped, 2 mm. long; 

 lobes oblong, unequal; achenes oblong-obconic, 3 mm. long, striate, glandular-granuliferous; 

 pappus of a crown of 8-17 thin, spatulate, erose squamellae 1 mm. long, thickened and slightly 

 united at the base and falling off together. 



Type locality: Southern part of Sierra Nevada, California. 

 Distribution: Southern Sierra Nevada, California. 

 Illustration: Contr. U. S. Nat. Herb. 4: pi. 10. 



Subtribe 9. BLENNOSPERMATANAE. Heads radiate. Involucre 

 hemispheric or depressed; bracts equal, herbaceous, partly membranous and 

 colored, plane, united at the base. Receptacle flat. Ray-flowers pistillate 

 and fertile, ligulate, yellow, or without corolla. Disk-flowers numerous, with 

 narrow tube and campanulate throat, hermaphrodite, but the pistil rudi- 

 mentary, and sterile. Achenes oblong-pyriform, not angled, 8-10-ribbed, 

 papillate on the surface. Pappus wanting. 

 A single genus. 48. Blennosperma. 



48. BLENNOSPERMA Less. Syn. Comp. 267. 1832. 



Apalus DC. Prodr. 5: 507. 1836. 

 Coniothele DC. Prodr. 5: 531. 1836. 



Annual glabrous herbs. Leaves alternate, pinnatifid. Involucre hemispheric or de- 

 pressed; bracts 5-12. Ligules present, or wanting in about every alternate ray-flower, oblong 

 or elliptic, sessile on the ovary, i. e., the corolla without a tube. Style-branches flat, linear or 

 oblong. Disk-flowers 20 or more; tube slender; throat broadly campanulate; lobes 4 or 5. 

 Anthers oval. Style undivided, capitate or peltate; ovary abortive. Papillae of the achenes 

 producing each two mucous filaments when wetted. 



Type species, Blentiosperma chilense Less. 



1. Blennosperma californicum (DC.) T, & G. Fl. N. Am. 



2: 272. 1842. 



Coniolhele calif ornica DC. Prodr. 5: 531. 1836. 



A glabrous annual, branched from the base; stem 1-2 dm. high, glabrous or nearly so; 

 heads at the ends of the branches; peduncles 2-6 cm. long; leaves alternate, pinnately dis- 

 sected into linear, usually entire divisions; involucre 5-6 mm. high, 10-12 mm. broad; ligules 

 usually present, 6-7 mm. long, 2 mm. broad; achenes oblong-elliptic, 2.5 mm. long, nearly 

 1 mm. broad. 



Type locality: California. 

 Distribution: California. 



Subtribe 10. BAERIANAE. Heads radiate or discoid. Involucre 

 campanulate, turbinate, or hemispheric; bracts herbaceous, mostly flat, often 

 more or less united. Receptacle high, commonly conic, usually with raised 

 points bearing the flowers. Ray-flowers pistillate and ligulate, or wanting. 

 Disk-corollas with campanulate throat, equaling or slightly longer than the tube. 

 Achenes narrow, oblong or .linear or somewhat clavate, round-angled, often 

 somewhat flattened, slightly nerved or nerveless. Pappus of squamellae or 

 awns, or both, or wanting. 



Bracts of the involucre flat, or somewhat carinate below; rays ligulate; leaves 

 opposite. 

 Bracts distinct or united merely at the base. 49. Baeria. 



Bracts united at least halfway up. 50. Lasthenia. 



Bracts of the involucre strongly concave throughout; marginal flowers tubular. 



with 2 or 3 short teeth, shorter than the style; leaves alternate. 51. Amblyopappus. 



