432 Transactions.— Botany. 
A well-marked species, excellently described and figured by Dr. Berg- 
gren. Among the species with two styles it is easily recognized by its 
usually reddish colour, densely tufted habit, strict semi-terete leaves, pale- 
coloured glumes and elliptic plano-convex serrate perigynia. Dr. Berggren 
considers that it is allied to C. raoulii, but I can find but little affinity with 
that plant, which differs altogether in habit, foliage, glumes and perigy- 
nia. ` 
Mr. Petrie informs me that C. buchanani is rapidly increasing in the 
central districts of Otago, spreading along the sides of water-races, and in 
river valleys that have had the dense native vegetation cleared away. In 
Canterbury and Nelson it is usually found on the shingle-beds of the large 
rivers; but it also ascends the mountains. 
17. C. lucida, Boott, in Hook. fil. Fl. Nov. Zeal., i., 283; Ill. Car., t. 178 ; 
Hook, fil. Handbook N.Z. Flora, 314. 
North and South Islands.—Abundant throughout, from the North Cape 
to Stewart Island. Altitudinal range from sea-level to 8,500 feet. 
This is a well-known and widely-spread species, and in its ordinary 
state cannot be confounded with any other. The narrow keeled leaves ; 
distant long and narrow somewhat loose-flowered spikelets ; usually entire 
glumes; and the biconvex turgid smooth and polished perigynia are good 
distinguishing characters. The culms often elongate considerably after 
flowering, becoming prostrate, and sometimes attaining a length of four or 
five feet. This form commonly has much paler glumes and perigynia than 
the type, but these are unimportant differences. The style-branches appear 
to me to be invariably two only; unless a doubtful plant with three styles, 
from the Wairau Valley, Nelson, of which I possess immature specimens 
only, be referable to this species. 
18. C. dipsacea, Berggren, Physiograph. Saltskaps Minneskrift Lund, 
1878, t. 7, f. 8-14, 
North Island.—Tokano and Omatangi (near Lake Taupo), Berggren, l. c. ; 
Mount Egmont Ranges, alt. 8,000 feet, H. Tryon! Upper Waikato and 
Patetere, T.F.C.; abundant in the swamps of the Middle and Lower 
Waikato nearly to the mouth of the river, T.F.C. 
South Island.—Nelson—Lower Motueka, Graham River, Wangapeka 
Valley, Wairau Valley, T.F.C.; Canterbury—Southern Alps, Berggren, l.c. ; 
Upper Waimakariri, Lake Tekapo, T.F.C.; Otago—Manuherikia Valley, 
Strath Taieri, Waikouaiti, Upper Waipori, Catlin's River, D. Petrie! Alti- 
tudinal range from sea-level to 8,500 feet. 
A larger species than the preceding, of a deeper green colour. The 
spikelets are much shorter and stouter, the flowers much more closely 
packed, the glumes broader, rounded and obtuse at the top; and the: 
