305 
been understood by Nees, Dunal, etc. As 2 parviflora Lagasca 
is antedated by that of Robert Brown, we have to use the name 
P. Lagasee R. & S.* for our species, unless it turns out to be a 
new one. 
In the appendix to the second edition of Species Plantarum,t 
Linnaeus describes two more species, viz: P. Pennsylvanica and 
P. Peruviana, both American. Nothing need be said about the 
identity of the latter, as it is now well understood. According to 
Nees there is a specimen of this in the Linnaean herbarium labelled 
P. pubescens. Perhaps this was the reason why Robert Brown f 
describes specimens of P. Peruviana under this name. Forms of 
this wide-spread species have been described under several names, 
as P. esculenta Willd., P. tomentosa Medic., P. tuberosa Zuccagni. 
P. latifolia Lam., P. edulis Sims, P. Barbadensis Lam. The name 
P. Peruviana has also been used erroneously by Roxburgh for 
P. pubescens and by Wallroth for P. angulata. 
P. Pennsylvanica has caused much trouble, and the name has 
been applied to P. Virginiana Mill., P. heterophylla Nees, P. Phila- 
delphica, P. viscosa, etc. The Linnaean description certainly does 
not help to identify it. There are only two American species that 
have the berry as small as the size of a pea, viz: P. microphysa 
Gray and P. Carpenteri§ The first is a rare plant from Mexico ; both 
are so different from others that no confusion is possible. In neither 
are the leaves smooth above and puberulent beneath. There are 
forms of P. Virginiana Mill,| not Gray, (2. lanceolata Gray ,** 
not Michx.+}) and P. arenicola Kearney,]t that sometimes have 
leaves smooth above and slightly hairy beneath, especially on the 
veins, but both have berries of the size of a garden cherry and the 
pubescence cannot be called puberulent. The former and also 
forms ot f£. Philadelphica and P. longifolia Nutt. sa are often. found, 
D? & S, Syst. 4: 679. 1819. 
+L. Sp. Pl. Ed. 2: 1670. 1762 
R. Br. Prodr. Nov. Holl, 447. SUN 
S See below 
| Mill. Gard. Dict. Ed. 8,no.4. 1768. 
T Gray, Syn. FL 2: pt. 1: 235. 1878. 
** Proc. Am. Acad. 10: 67. 1874. 
tt Michx. Fl. Bor. Am. 1: 149. 1803. 
+} Bull. Torr. Club, 21: 485. ge 
SS Trans, Am, Phil. Soc. (II.) 5: 193. 1833-37. 
