324 PITTONIA. 
and Nuttall in 1843, ignoring Rafinesque’s earlier proposi- 
tion—just as later pretenders to taxonomic autocracy sup- 
pressed Nuttall’s work—sought to establish a new genus 
Batodendron with V. arboreum as typical, and Picrococcus with 
V. stamineum for its type. 
The characters of the two genera are well indicated by 
Nuttall, in the transactions of the American Philosophical | 
Society, with the exception of one new and most significant 
peculiarity of the V. stamineum group which I alone seem to 
have observed. It is this, that in this group the corollas are 
open in the bud! For from ten days to two weeks before the 
actual flowering, and even from the time that the buds are 
green and searcely larger than a pin-head, the corolla is open 
and campanulate. This is another character otherwise un- 
known in the family of plants to which these belong. Cer- 
tainly in Vaccinium and Gaylussacia the buds are tightly 
closed, in an imbricate sestivation, until the corollas are full- 
grown and the anthers mature. 
POLYCODIUM. 
Rafinesque, in American Monthly Magazine, ii. 266 (Feb., 
1818). Picrococcus, Nuttall, in Transactions of the American 
Philosophical Society, 2 ser. viii. 262 (1843). 
l. P. STAMINEUM. Vaccinium stamineum, Linn. Sp. 390 
(1753). Picrococcus stamineus, Nutt. l. c. (1843). Species said 
to oecur in dry woods all the way from Maine to Florida ; 
but no doubt an aggregate of several over and above the fol- | 
lowing whieh have been segregated from the “ V. stamineum ” 
of many books and catalogues. 
2. P. ELEVATUM. Vaccinium elevatum Banks & Soland. 
in DC. Prodr. vii. 567 (1 888) Picrococcus elevatus, Nutt. l. c. 
(1843). Said to frequent sandy woods from New Jersey to 
. Carolina, and reputed to be the Vaccinium album of Pursh 
(not of Linn.) and to be represented in Andrews' Bot. Repos. 
