New Alpine Plants. 101 
CARYOPHYLLEAE. 
9. Colobanthus pulvinatus. 
Perennial, glabrous; stems numerous, moos-like tufted ; 
leaves densely crowded, rigid, squarrose, broad-subulate, 
channelled triquetrous, pungent, shining, with a slightly in- 
flexed mucro; sheats close; flowers terminal, solitary, on very 
short and thick peduncles, pentamerous ; sepals from a broad 
base lanceolate-subulate, hardly longer than the egg-shaped 
capsule, and nearly twice as long as the stamens. 
On the highest, barest, and gravelly tops of the Munyang 
Mountains. (6,000—6,500 feet.) 
This forms a near approach to C. Benthamianus, a native 
of Cape Horn and the Falkland Islands, and not yet found 
similarly presented either in New Zealand or Tasmania, but 
is apparently identical with the pentamerous form of C. Ben- 
thamianus from Campbell’s Island. Since also my plant in- 
variably shows a quinery division of the flowers, I have 
separated it from the South American one, following Dr. 
Hooker's suggestions in the Flor. Antarct., p. 247. 
STACKHOUSEAE. 
10. Stackhousia pulvinaris. 
Depressed, with numerous intricate rooting branches, 
perfectly smooth; leaves somewhat fleshy, oblong or spathu- 
late-linear, nearly blunt; flowers solitary on the summit of 
very short branchlets; bracteoles twin, as long or longer 
than the pedicel; flowers yellow ; three of the stamens longer 
me the two others; anthers glabrous; style deeply bi- or 
trifid. 
On the highest summits of the Australian Alps, where satu- 
rated with moisture, the widely expanded tufts decorated with 
a starry flowers, form a beautiful carpet. (5—7,000 
eet. 
As a species it connects the Tasmanian S. flava with S. 
minima, from New Zealand. 
UMBELLIFERAE. 
Dichopetalum. 
A new genus of Hydrocotylex. Flowers hermaphrodite, 
equal. Lobes of the calyx white, membranous, petaloid, of 
