AMERICAN GRASSES DESCRIBED BY LINNZEUS. 125 
we have been calling Zizania aquatica. The description of Z. aquatica as given by 
Linnieus is very short, “ panicula effusa,’’ and would apply to either form. He prob- 
ably did not then distinguish between the two. Both synonyms refer to the broad- 
leaved form and the habitat given is Jamaica and Virginia, where the narrow-leaved 
form is not known to occur, However, it seems evident that the only plant that Lin- 
nveus saw was the narrow-leaved form, His description was short because he thought 
there was but one species. The fact that later he described the broad-leaved form as 
a distinct species confirms the opinion that his idea of Z. aquatica was the narrow- 
leaved species. Consequently we must call the narrow-leaved species Zizania aquatica 
L. and the broad-leaved species Z. palustris L. 
Pharus latifolius lL. Syst. Nat. ed. 10. 2: 1269. 1759. 
The type specimen is from “Br,’’ and is the common Jamaican species. Lin- 
nveus,” following his own diagnosis, cites Sloane's plate 73, figure 2, which is the same. 
mee 
Andropogon divaricatum I. Sp. Pl. 1045. 1753 
The type specimen is marked “2 divaricatum’’ and is from Gronovius. As pointed 
out elsewhere, this is the sameas A. alopeewroides L.. which isan Erianthus. It should 
be called Erianthus divaricatus (L.) instead of Erianthus alopecuroides (L.) Ell. 
Linnzeus also cites a synonym from Gronovius which is based on Clayton no. 600. 
This is Sorghastrum linnaeanum (Hack.) Nash, 
Andropogon nutans L. Sp. Pl. 1045. 1753. 
The type specimen is marked “3 K nutans.”” It agrees with Linnzus’s diagnosis 
and is Sorghastrum nutans (L.) Nash, as described in Small’s Flora. The panicle is 
rather compact and the awn bent once. On the back of the sheet is a reference to 
Gronovius, “ Lagurus Clayton 600,’’ but, as indicated above, that is S. linnaeanum 
(L.) Nash. Linneus cited two synonyms of his Andropogon nutans, one trom Grono- 
vius based on Clayton no, 621, which is Stipa avenacea L., and one from Sloane (plate 
14, figure 2), which is Valota insularis (L.) Chase (Andropogon insulare L.; Paniewm 
leucophaeum H. B.K.). 
Andropogon alopecuroides L. Sp. Pl. 1045. 1753. 
The type specimen is a Gronovian plant and bears Clayton’s number 601. The 
corresponding specimen of Gronovius’s herbarium is the same, Erianthus alopecuroides 
(L.) Ell, but should be called FE. divaricatus, as indicated above in the discussion of 
Andropogon divaricatum LL. Linneeus here ¢ also cites Sloane’s plate 70, figure 1, 
which is fim perata caudata Trin. 
Andropogon virginicum L. Sp. Pl. 1046. 1753. 
The type specimen is marked ‘7 virginicum,’? but without indication as to its 
origin. It belongs to this species as usually understood. Gronovius’s specimen 
(Clayton no. 460) is the same. A second sheet in the herbarium from ‘“Br.”? is A. 
leucostachys T.B.K. Linnzeus4 cites Sloane’s plate 68, figure 2, which is Andropogon 
leucostachys Hl. B. hk. 
Andropogon bicorne L. Sp. Pl. 1046. 1753. 
The type specimen marked by Linnzeus belongs to the West Indian species known 
by this name. A second sheet with a Gronovius label and numbered 602 is A. sco- 
parius Michx. The diagnosis of Gronovius, based on this latter specimen, is cited by 
Linneus under sf. hirtwm, an Old World plant, but not under A. bicorne. Clayton 
no, 602 in the Gronovius herbarium is also A. scoparius Michx. The Gronovian 
synonym given by Linneeus under sl. bicorne is supported by a plant in the Gronovian 
herbarium (Clayton no. 606) which is Andropogon glomeratus (Walt.) B.S. P. Lin- 
neus€ cites Sloane, page 42, and later / cites his plate 15. 
@ Also Sp. Pl. ed. 2. 1408. 1762. @Sp. Pl.ed. 2. 1482. 1762, 
b Bot. Gaz. 35: 215. 1903. eSp. Pl. 1046. 1753. 
¢ Also Sp. Pl. ed. 2. 1481. 1762. /Sp. Pl. ed. 2. 1482. 1762. 
