202 COMPOSITE. 



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

 pubescent: rays 57, yellow, ^ in. long: acllenes hispidulous : 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, HELENIOIDE^E. 



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 cuneiform HELENI ASTRUM 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 ERIOPH YLLUM 54 



Glabrous succulent seaside herb JAUMEA 55 



48. HELENIASTRUM, VaillanL 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 monocephalous 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. occideutale. Stout, 24 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, % in. long: disk brownish-yellow: pappus-paleae ovate-lanceolate, 

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



49. BLENNOSPERMA, 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 512, linear. 

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



