352 CALIFORNIA.— SUPPLEMENT. [Composite. 



Our specimens, in Douglas' collection, are more slender, less branched, more tomentose, and the floriferous 

 branches much longer than in that we have from Chamisso. The style is unquestionably that of the Sene- 

 cioneee, but the habit of the plant that of some of the slender Asterea. 



1. Baccharis Douglasii. De Cand. Prod. 5. p. 400. — B. viscosa. Hook, et Am. supra, 

 p. 147. 



This is certainly our B. viscosa, from California, and we cannot see how it is to be distinguished from the 

 Chilian plant. 



2. B. viminea. De Cand. Prod. 5. p. 400. 

 S. B. pilularis. De Cand. Prod. 5. p. 407. 



We have no specimen of this in the collection, unless it prove, what we suspect, the same as B. consan- 

 guinea. 



4. B. consanguinea. De Cand. Prod. 5. p. 408 B. glomeruliflora. Hook, et Am. supra, 



p. 147. 



Although, in deference to De Candolle, we admit this as a distinct species, we still hesitate about its being 

 really different from B. glomeruliflora. Our var. <*., of this work, we would refer to B. consanguinea, cer- 

 tainly, and the female of p. to B. pilularis, which has the capitula solitary : the male of our var. /3. may be- 

 long to either. 



1. Franseria Chamissonis. Less. — Hook, et Am. supra, p. 148. — 13. De Cand. Prod. 5. 

 p. 524. 



The var. (3. only is in the collection ; this has quite the habit of an Ambrosia, and perfectly unlike the 

 var. «. 



1. Coniothele Californica. De Cand. Prod. 5. p. 531. 



The description given by De Candolle is extremely correct : he has omitted, however, to take notice of 

 a remarkable structure in the ray : the ligula is oblong, very obtuse, cordate at the base, destitute of tube, 

 and therefore sessile on the top of the ovarium, embracing the base of the style. The florets of the disk are 

 broadly infundibuliform : the anthers included, as well as the abortive style and capitate stigma ; these are 

 apparently quite destitute of an ovary. The achenia (of the ray) possess that remarkable property noticed 

 by De Candolle, which was first observed in the seed of the genus Gilia, and of the common Cress, of 

 emitting horizontal filaments, which, after being kept some time in water, unite and form a radiately striated 

 gelatinous mass or limbus, equal in thickness to the seed itself. Mr Joseph Hooker has observed the same 

 peculiarity in one or two species of Composites from Van Diemen's Land. 



1. Leptosyne Douglasii. De Cand. Prod. 5. p. 531. 



The tlorets of the disk have the style abortive ; the achenia of the ray are surrounded by a winged margin, 

 and have the pappus coroniform. 



1. Alarqonia helenoides. De Cand. Prod. 5. p. 537. 



2. A. ? angustifolia. De Cand. Prod. 5. p. 537. 



1 . Agarista calliopsidea. De Cand. Prod. 5. p. 569. 

 1. Helianthus Califomicus. De Cand. Prod. 5. p. 589. 



