170 Rhodora [AvausT 
L. Sp. Pl. 58 (1753) [cf. Doell in Mart. Fl. Bras. 2 pt. 2 : 207 (1877) 
in syn. and Ind. Kew. 2, pt. 1, 415 (1895)]. P. maculatum Reichb. 
ex Schlecht. & Cham. in Linnaea 6 : 33 (1831) is used in synonymy 
under P. divaricatum 2) latifolium and is consequently invalid (Sect. 
4. Art. 37 of the “ Vienna Code"). Incidentally P. divaricatum L. Syst. 
Nat. ed. 10, 2:871 (1759) equals Lasiacis divaricata (L.) Hitche. 
[cf. Hitche. & Chase Contr. Nat. Herb. 15 : 16 (1910)]. Since, accord- 
ing to the * Vienna Code," both older uses of the specific name macu- 
latum are invalid P. maculatum Ashe replaces P. yadkinense Ashe. 
According to the American Code, P. yadkinense Ashe remains the valid 
name. 
PANICUM MACULATUM Ashe in Journ. Elisha Mitchell Soc. 15 : 44 
(1898) not Aubl. l. c. (1775), not Reichb. ex Schlecht. & Cham. I. c. 
(1831). Synonymy in part: P. yadkinense Ashe in 1. c. 16 : 85 (1900); 
Hitche. in Gray Man. ed. 7, 107 (1908); Hitche. & Chase Contr. Nat. 
Herb. 15 : 195 (1910). 
For complete synonymy cf. Hitche. & Chase l. c. 
PANICUM WRIGHTIANUM Scribn. 
This species, which belongs next to P. lewcothrix Nash, is not de- 
scribed in the Manual, but as it has been collected in southern New 
Jersey [cf. Hitche. & Chase Contr. Nat. Herb. 15 : 208 (1910)] and 
at Barnstable, Mass. by Mr. E. W. Sinnott, who reports his locality 
in Rropona 14 : 29 (1912), it seems best to speak of it. The authenti- 
city of Mr. Sinnott’s specimens is unquestionable, as the writer has 
specimens in his herbarium and as Mr. Sinnott states that the material 
was determined by Mrs. Agnes Chase of the Bureau of Plant Industry. 
The oldest name applied to this species is P. strictum Bosc. in R. &S. 
Syst. Veg. 2 : 447 (1817), but this name is not available because of P. 
strictum Pursh (1814) which is the valid name of P. depauperatum 
Muhl. [cf. discussion under P. depauperatum Muhl.]. 
'The second synonym given by Hitchcock and Chase Contr. Nat. 
Herb. 15 : 207 (1910), under P. Wrightianum Scribn., is P. minutulum 
Desv. Opusc. 87 (1831). According to the American Code the use 
of the name minutulum for this species is invalidated by the older 
P. minutulum Gaud. in Freycinet Voy. Bot. 410 (1826). This equals 
Isachne miliacea Roth Nov. Pl. Sp. 58 (1821) [cf. Hook. f. Fl. Brit. 
Ind. 7:25 (1896)]. According to the “Vienna Code” (Sect. 7, 
