SUNFLOWER FAMILY. 



531 



filiform flowering branehlets very short; lower leaves pinnately 

 parted; heads narrow; disk-flowers about 6 or 7; ray-flowers 5, the 

 ligules 2 to 2£ lines long; ray-achenes slightly curved, roughened on 

 the beak and sides, and with a curved or upturned beak at the 

 summit on the inner side; pappus of about 9 linear palea- which are 

 irregularly lacerate at summit ajid almost or quite as long as the tube 

 of the corolla, united only at base or almost to the summit. 



Antioch to the San Joaquin Valley where it is abundant in low r 

 grain fields near the river. July-Aug. 



6. H. fasciculata (DC.) T. &G. Paniculately branched above the 

 base, £ to 2 ft. high, sparsely hirsute and hispid, or disposed to be 

 nearly glabrous above; radical leaves pinnately parted; stem leaves 

 linear, either laciniate-pinnatifid, few-toothed or entire, those of the 

 branehlets shorter and mostly entire; heads usually fascicled in rather 

 dense small clusters; bracts of the involucre glabrous or glandular- 

 hispidulous, those of the involucre slightly united; disk-aehenes with 

 a pappus of 6 to 10 linear paleae lacerate at tip; ray-achenes smoothish 

 or transversely rugose, with a very short beak. 



Mt. Diablo Range southward to Monterey Co. and Southern 

 California. 



7. H. virgata Gray. Stem commonly branching at ths middle 

 into several virgate branches bearing numerous racemosely disposed 

 heads on short lateral branehlets; herbage glabrous or nearly so; 

 branehlets crowded with linear leaves about 1 line long, those (partic- 

 ularly of the flowering branehlets) ending in a truncate or somewhat 

 saucer-shaped gland; involucre oblong, its bracts 5, with involute tip 

 ending in a truncate gland and stipitate-glandular on the back; ray- 

 flowers 4 or 5; disk-flowers 7 to 10. 



Common on the plains of the Sacramento Valley (Suisun, Vanden. 

 Gait, etc.) and the San Joaquin Valley and in the valleys of the 

 inner South Coast Ranges. Aug. -Oct. 



8. H. Heermanni Greene. Stems paniculately branched, 1 to 3 ft. 

 high; herbage viscid, pubescent, heavy-scented; leaves of the flower- 

 ing branehlets minute, scattered; involucre hemispherical, its bracts 

 beset with stalked glands; ray-flowers 5 to 8, disk-flowers 10 to 15; 

 ray-achenes with a somewhat conspicuous beak and stipe. 



Mt. Diablo Range southward to Kern Co. and Southern California. 



48. HOLOCARPHA Greene. 

 Corymbosely branching annual with very viscid-glandular herbage. 

 Leaves of the axillary fascicles and those about the heads narrowly 

 linear, beset with stipitate glands and tipped with a truncate gland. 

 Heads solitary or common]}' glomerate at the ends of the branches. 

 Bracts of the convex receptacle each subtending a flower, the outer 

 and those of the involucre abundantly covered with slender or clavate 

 colorless gland-tipped processes. Ray-flowers many, with short yellow 

 ligules; achenes 4-ridged on back, the ventral angle ending in a beak. 

 Disk-flowers with sterile achenes. Pappus none. (Greek holos, 

 whole, and karphos, chaff, the whole receptacle chaffy.) 



