202 COMPOSITE. 



all hirsute-ciliolate : branches, peduncles and involucres glandular- 

 pubescent: rays 5 — 7, yellow, 3^ in. long: achenes Mspidulous: pappus 

 of some 10 unequal linear-lanceolate acuminate white palese, their mar- 

 gins barbellate: heads small, nodding both in bud and in fruit. — 

 Mountains of Sonoma Co. April — June. 



Suborder 7, Hblenioide2e. 



Herbs seldom viscid or balsamic. Receptacle naked. Bracts of involu- 

 cre herbaceous mostly uniserial and equal, sometimes concave behind 

 the ray-achenes, but never enfolding them. Style branches of perfect 

 flowers with either truncate or appendiculate tips. Pappus mostly 

 paleaceous or none. 



Receptacle globose; rays cuneif orm Heleniastrum 48 



" flattish; rays narrow; pappus Blennosperma 49 



" flat; ligulate rays 0; pappus hyaline Chjenactis 50 



" " rays short; pappus firm-paleaceous Rigiopappus 51 



" subulate to conical; 



Leaves opposite; pappus various or Lasthenia 52 



" alternate; pappus Monolopia 53 



" opposite; pappus paleaceous Eriophvllum 54 



Glabrous succulent BeaBide herb Jaumea 55 



48. HELENIASTRUM, Vaillant. Herbs erect, with sessile mostly 

 decurrent leaves, and long-peduncled heads; the herbage more or less 

 resinous-dotted. Rays numerous, cuneate, disk-flowers very many. 

 Involucre of 1 or 2 series of small herbaceous bracts. Receptacle glo- 

 bose, naked. Style branches with capitate truncate tips. Achenes 

 turbinate. Pappus in ours of awn-pointed palese. 



1. H. puberulum (DC ), O. Ktze. Minutely cinereous-pubescent, 2 — 

 4' ft. high, with slender widely spreading mpnocephalous branches: 

 leaves lanceolate, entire, all but the radical strongly decurrent : involu- 

 cre and reflexed rays very short and inconspicuous: globose disk of red- 

 brown flowers %in. thick: palese of pappus ovate, short-awned. — Banks 

 of streams, and in other moist places. July — Dec. 



2. H. occidentale. Stout, 2 — 4 ft. high, erect, parted above into 

 several stoutish very erect pedunculiform monocephalous branches: 

 leaves lanceolate, 6 in. long or more, thickish and somewhat fleshy, 

 almost gummy to the touch, and with some tomentose pubescence: rays 

 showy, % i n - long: disk brownish-yellow: pappus-palese ovate-lanceolate, 

 tapering into a long awn. — Suisun marshes. July — Oct. 



49. BLENJJOSPERMA, Lessing. Low annual, with pinnately parted 

 leaves, and pedunculiform branches bearing solitary radiate yellow 

 heads. Involucral bracts uniserial, equal, oblong, herbaceous but 

 purplish or yellowish. Receptacle flattish, naked. Rays 5 — 12, linear. 

 Disk-flowers about 20; their narrow tube abruptly expanded into a 



