96 Pennell : Plants of the southern United States 



Aneilema nudiflorum (L.) Kunth, Enum. PI. 4: 66. 1843 

 Based upon Commelina niidiflora L., citing the second edition 

 of the Species Plantarum, where the species is continued un- 

 changed from the first edition. Commelina nudiflora L. (Sp. PI. 

 41. 1753), "Habitat in India," is not to be typified by Her- 

 mann's plant described by Linnaeus in the Flora Zeylanica 

 13. 1748, and identified byC. B. Clarke as the species commonly 

 known by this name. In the Species Plantarum Linnaeus's 

 earlier description of this has been modified by the addition of 

 the phrase "involucro nullo" and the adoption of the specific 

 name ''nudiflora,'' while from photographs kindly sent me through 

 the courtesy of Mr. B. Daydon Jackson it appears that all speci- 

 mens of this name in the Linnean herbarium in 1753, and inci- 

 dentally all subsequently added, belong to Aneilema, apparently 

 to this species. The combination Aneilema nudiflorum appears not 

 to have been formed by Robert Brown (see Prod. 271. 1810), 

 as it is usually quoted. Collected ' along streets of Thomasville, 

 Thomas County, Georgia, September 29, 1912, 4737. (P.). 



THE GENUS COMMELINA (Plumier) L. IN THE UNITED 



STATES 



The following revision of this genus in the United States is 

 provisional, based upon studies in the field and examination of 

 all material in the herbaria of the New York Botanical Garden, the 

 University of Pennsylvania and the Academy of Natural Sciences. 

 It is planned to gather at the Garden a living collection, as com- 

 plete as possible, of all species inhabiting North America, and for 

 the accomplishment of this the cooperation of all interested is 

 solicited. Mature capsules and seeds, as well as specimens, sent 

 to the writer will be appreciated. Perhaps with living plants for 

 study several proposed species here reduced to synonymy will 

 prove valid. Or, more probably, several here tentatively main- 

 tained will be found of varietal rank. At some future date it is 

 hoped to attempt a fuller revision. 



