CORRECTIONS IN NOMENCLATURE. 225 
An equally unfortunate attempt to establish a substitute 
for the homonymous G'reggia of Asa Gray, was made by me 
five years ago. The Parrasta (Eryth. v. 75) then pro- 
posed was discovered to be a homonym soon after the 
appearance of the third volume of the Index Kewensis, and 
I have too long delayed the correction. For this latest 
Greggia I now offer the name NERISYRENIA. The species are: 
N. cAMPORUM. Greggia camporum, Gray. 
N. LINEARIFOLIA. Greggia linearifolia, Wats. 
'The generie name Grayia, as now long employed in Amer- 
ican botany, dates from 1841 only; while another genus 
by the same name was published a year or two earlier. 
Our salsolaceous shrubs of the far-western deserts need, 
therefore, à name that shall not be revertible, and I offer 
for this purpose the new name EnEMosEMIUM. The species 
are two only: 
E. serNosuM. Chenopodium (?) spinosum, Hook., Fl. ii, 
127, or Grayia polygaloides, H. & A. Bot. Buch. 387. 
E. BRANDEGEI. Grayia Brandegei, Gray, Proc. Am. Acad. 
xi, 101. 
Geum AUCKLANDICUM may replace G. sericeum, Kirk, 
Students, Flora of New Zealand, 129, (1899) which is a 
homonym by reason of my own North American G. sericeum, 
Pitt. iii, 172 (1897). 
TRELEASEA PUMILA. Zebrina (?) pumila, Greene, Pitt. i, 
157. This plant, which I, twelve years since, was strongly 
inclined to make the type of a new genus, certainly falls 
into Mr. Rose's genus Treleasea newly established. It may 
even be identical with one or the other of the two species 
recognized by Mr. Rose. But my specimen is not now to 
be found, unless at the University of California. 
