Composite.] 



CALIFORNIA.— SUPPLEMENT. 



359 



4. C. cephalotes. De Cand. Prod. 5. p. 695. 



1. Achyrachaena mollis. Schauer, del. sem. H. Vrat. 1837, p. 3. Linneea XII. Litt. p. 87. 

 De Cand. Prod. 7. p. 292. Hook. Ic. PI. — Lepidostephanus madioides. Bartl. ind. sem. 

 Gott. 1837. Linneea XII. Litt. p. 82. 



1. Venegasia carpesioides. De Cand. Prod. 6. p. 43. 



1. Monolopia major. De Cand. Prod. b.p. 74. Hook. Ic. PL v. 4. t. 344. 



The tube of the ray has a small toothed appendage on the opposite side from the ligule, so that the florets 

 may almost be called bilabiate. The involucre is of one piece, and divided scarcely down to the middle. 



2. M. minor. De Cand. Prod. 5. p. 74. Hook. Ic. PI. v. 4. t. 343. 



The florets of the ray are destitute of the appendage found in the first species, and the involucre is divided 

 to near the base. 



1. Tanacetum ? suaveolens. Hook. Flor. Bor. Am. 1. p. 327. t. 110 — T. matricari- 

 oides. Less. Syn. Gen. Compos, p. 265. — T. pauciflorum. De Cand. 6. p. 131 (vix Pick.). 

 Santolina suaveolens. Pursh, PI. Bor. Am. 2. p. 520. Nutt. Gen. 2. p. 141. De Cand. 

 Prod. 6. p. 37. — Artemisia matricarioides. Less, in Linnaa, 6. p. 210. — Cotula matri- 

 carioides. Bong. Veg. Sitch. p. 29 Matricaria discoidea. De Cand. Prod. 6. p. 50. 



This was originally found by Lewis on the banks of the Kooskooske River, one of the tributaries of the 

 Columbia ; but it extends to North California on the south, and to Unalaschka on the north. T. pauci- 

 florum, Rich., has villous leaves, and appears, from the character given, more allied to Pyrethrum discoi- 

 deum. We are still in doubt about the proper genus to which our plant ought to be referred ; the florets are 

 four-angled, slightly bialate, and usually 4-toothed ; the last character approaches it to Tanacetum, in which 

 the same structure is frequently found ; in many particulars it agrees with the Cotidece, from all which it 

 differs by the conical receptacle. It thus forms a link between several genera. The receptacle, on a more 

 recent examination, is not paleaceous, unless the inner scales of the involucre can be so called. 



1. Artemisia vulgaris. Linn. 



2. A. pachystachya. De Cand. Prod. 6. p. 114. 



3. K.frigida. Willd. De Cand. Prod. 6. p. 125. 

 Hab. Snake Country. Mr Tolmie. 



1 . Gnaphalium decurrens. Ives in Sill. Journ. De Cand. Prod. 6. p. 226. Hook, et Am. 

 supra, p. 151. — G. Californicum. De Cand. I. c. p. 224. 



We do not see how Mr Douglas' plant, which is quite the same as that we have already noticed in this 

 work, can be satisfactorily distinguished from G. decurrens. 



2. G. ? filaginoides; totum albido-lanatum, caule erecto apice subramoso, foliis line- 

 aribus basi attenuatis apice nigro-mucronatis, capitulis ovato-conicis in glomerulos ad 

 dichotomias aut apices ramorum sitos aggregatis, involucri squamis obtusiusculis exteri- 

 oribus ovatis lanuginosis interioribus ovato-lanceolatis scariosis dorso linea villosa notatis, 

 receptaculo conico papillis cylindricis retusis onusto, acheniis teretiusculis glanduloso- 

 puberulis. 



