168 Rhodora [AvavsT 
(1908); Hitch. & Chase Contr. Nat. Herb. 15 : 322 (1910). P. 
Curtisii Chapm. Fl. So. U. S. 573 (1860); Watson & Coulter in Gray 
Man. ed. 6, 631 (1890). Brachiaria digitarioides (Carpenter) Nash 
in Britt. Man. 77 (1901); ed. 3, 77 (1907). 
For complete synonymy cf. Hitche. & Chase l. c. 
PANICUM VERRUCOSUM Muhl. 
According to the American Code P. debile Ell. Sk. Bot. S. C. & Ga. 
1 : 129 (1816), the oldest name applied to the species, is invalid on 
account of older usage of the specific name debile. P. debile Desf. 
Fl. Atlant. 1: 57 (1798) equals Digitaria sanguinalis (L.) Scop. Fl. 
Carnol. ed. 2, 1:52 (1772). P. debile Poir. in Lam. Dict. Suppl. 4 : 
283 (1816) is based on P. divaricatum Michx. Fl. Bor. Am. 1 : 50 (1803), 
which equals Festuca mutans Spreng. Fl. Hal. Mant. 34 (1807) (F. 
obtusa Spreng.) [cf. Hitche. Contr. Nat. Herb. 12: 149 (1908)]. Con- 
sequently, since the older P. debile of Desfontaine and of Poiret have 
been definitely reduced to synonymy, P. debile Ell. is the valid name 
of the species commonly known as P. verrucosum Muhl. (Sect. 7, 
Art. 50 of the * Vienna Code"). 
PANICUM DEBILE Ell. Sk. Bot. S. C. & Ga. 1 : 129 (1816), not Desf. 
l. c. (1798), not Poir. l. c. (1816). Synonymy in part: P. verrucosum 
Muhl. Descr. Gram. 113 (1817); Hitch. in Gray Man. ed. 7, 103 
(1908); Hitche. & Chase Contr. Nat. Herb. 15 : 127 (1910). 
For complete synonymy cf. Hitche. & Chase l. c. 
PANICUM STIPITATUM Nash. 
This specific name is antedated by P. elongatum Pursh Fl. 1 : 69 
(1814), upon which it is based. According to the American Code, 
P. elongatum Pursh is invalidated by P. elongatum Salisb. Prodr. 18 
(1796). P. elongatum Salisb. is, however, based on P. italicum L. 
Sp. Pl. 56 (1753) which equals Setaria italica (L.) Beauv. Agrost. 51 
(1812). Consequently according to the “Vienna Code" (Sect. 7, 
Art. 50) P. elongatum Pursh,— which is identical with P. stipitatum 
Nash [cf. Hitche. & Chase Contr. Nat. Herb. 15 : 104 (1908)],— is 
the valid name. 
PANICUM ELONGATUM Pursh Fl. 1 : 69 (1814) not Salisb. 1. c. (1796). 
