38 Director's Annual Report. 
Euphorbia Rockii, sp. nov. 
Arbor 1-3.5 m. alta, foliis oppositis, obovato-oblongis, inequalibus, ob- 
tusatis, basi rotundatis, 8-12 2.5-3 cm. brevissime petiolatis vel sessilibus; 
cymis axillaribus 3-4 cm. longis, pedicellis 5 mm. longis; inyolucri campanu- 
lati, lobis minimis, lanceolatis, acutis, glandulis transverse oblongis; capsulz 
hexagono-obovatis, glabris, 22.2 cm. 
Type locality, Punaluu Mountains, Oahu, H.I. Forbes & 
Rock, Sept. 14-21, 1908. 
An erect shrub or small tree four to twelve feet high. Leaves 
opposite, obovate-oblong, obtuse, uneven-sided with a clasping 
base, nearly sessile, 3-4.5 X 1-1.25 inches. Flowers in open axil- 
lary cymes, 15-18 lines long. Involucre campanulate, minutely 
hairy or glabrous on the outside, pubescent on the inside, lobes 
ovate, minute, glands transversely oblong not appendiculate. 
Style branches short, nearly free. Capsules large 9X12 lines, on 
nodding peduncles. 
This tree was discovered by Mr. J. F. Rock some two months 
before the gathering of the type material. The tree is distin- 
guished by its large pink fruits, nearly sessile leaves and by its 
open cymes. 
[214] 
