Notes on plants of the southern United States—Il 
Francis W. PENNELL 
In the first series of these notes, published in the February 
Bulletin of this year, there was given a tentative revision of the 
genus Commelina. The treatment of species there presented 
differed widely from current treatments and should probably 
have been preceded by a fuller introductory statement. A sum- 
mary of the conclusions reached may therefore be in place. 
Commelina communis L. is the common introduced weed of 
the northeastern states. Both Commelina longicaulis Jacq. and 
the little-known C. caroliniana Walt. have passed as C. nudiflora 
L., but, as is shown on page 96, the latter specific name must 
be retained for a plant of another genus, Aneilema nudifiorum (L.) 
Kunth. Strangely enough the Linnean Commelina nudiflora had 
been perpetuated in the names of two species belonging to different 
genera. Linnaeus’s description of his Commelina virginica is 
clear and diagnostic, and leaves no doubt that the plant he was 
considering is that we have been calling C. hirtella Vahl. But the 
plant which has been separated in recent floras, by reason of having 
its capsule three-celled, as C. virginica, is but a state or condition 
of C. erecta L. C. crispa Wooton and C. angustifolia Michx. are 
continued as species but are very near, possibly not distinct from, 
C. erecta. Commelina elegans HBK. is a widespread species of 
tropical America. 
In the present paper further noteworthy records, based upon 
my southern collections of 1912 and 1913, are given, and revisions 
are made of a portion of the genus Schoenocaulon, and of the Ne- 
mexia subgenus of the genus Smilax. 
MISCELLANEOUS SPECIES 
CAREX GLAUCESCENS Ell. 
This species was listed in the first series of these Notes (p. 95) 
as C. verrucosa Muhl., a later name. See Mackenzie; Small, Fl. 
SE. U.S: ed.:2, 1324-1955: 
407 
