146 PROCEEDINGS OF THE AMERICAN ACADEMY 



denticulatis, superioribus subamplexicaulibus, iniis in petiolum basi 

 (lilatatum sensim angustatis ; involucri squamis lanceolatis subacutis. 

 — Rio Negro, North Patagonia, in saline soil. 



AcHYROPHORUS SESsiLiFLORUS (A. ' Quitensis, Schultz Bip. Wedd. 

 with A. Hmnboldtii and albijlorus, Schultz), a widely variable species, 

 must include not only A. sonchoides, DC. (the most caulescent foi*m), 

 but also a 



Var. ^. BARBATUS {A. barbatus, Schultz Bip. Rev. Crit.) : minor ; 

 involucri phyllis exterioribus superne pi. m. setosis. 



Var. y. SUBRUNCINATA {A. setosus, Wedd. & A. eriolcenus, Schultz 

 Bip.) : foliis runcinato-dentatis vel incisis margine sa^pius setuloso-cili- 

 atis; involuci-i phyllis exterioribus oblongis seu obovatis dorso setosis 

 vel uudis. Ludit, 1, involucro tomentoso, 2, foliis rhombco-ovatis lon- 

 gius petiolatis. 



AciiYROi'iiORUS STENOCEPHALUS, Gray (including A. taraxacoides 

 Wedd.) is perhaps only an extreme variety of the preceding. Meyen's 

 specific name was taraxacifolia, which Walpers, perhaps accidentally, 

 changed to taraxacoides, which name both Weddell and Schultz cite 

 under A. Meyenianus (which is most probably a form of A. sessili- 

 Jlorus) as well as under the pi'esent species, showing some confusion, to 

 avoid which I have retained the appropriate name of A. stenocephalus. 



PiCROSiA LONGiFOLiA, Don. The pappus is fulvous and soft, not 

 fragile, and the genus is probably nearest related to PyrrJiopappus. 



FiTCHiA NUTANS, Hook. f. Of this curious arborescent Cichoracea 

 Professor Dana collected a single specimen on the mountains of Tahiti, 

 which is about 25 degrees of longitude further east than Elizabeth 

 Island, where it was discovered by Mr. Cuming. The single capitu- 

 lum in the collection being male adds nothing for the completion of the 

 character of the genus. The plant from which it was taken is said to 

 be a tree, with yellow flowers. 



2. Notes on Lobeliacece, Goodeniacew, SfC. of the Collection of 

 the U. S. South Pacific Exploring- Expedition. By Asa 

 Gray. 



LoheliacecB Sandwicenses. The Sandwich Islands are remarkable 

 for their arborescent, shrubby, or fleshy-stemmed Lobeliaceae. The 

 species are numerous and peculiar, but very difficult to investigate in 

 herbaria, owing to the imperfection of materials in collections and to 



