234 MACKENZIE: NoTeEs ON CAREX 
The second plant referred to which seems worthy of separa- 
tion is a plant of the mountains of North Carolina, distributed in 
considerable quantities in recent years by the Biltmore collectors. 
Like Carex colorata this species differs from Carex tetanica and 
Carex Woodii in not having the lower sheaths blade-bearing and 
in being strongly purplish-tinged at base. It, however, lacks the 
strong stolons so characteristic of C. colorata, but has stout, much 
interwoven and elongated rootstocks, like those of Carex poly- 
morpha. In addition, it is a stout plant with broader leaf-blades. 
In fact it seems to be a local type characteristic of some of the 
higher country of North Carolina, and in honor of the institution 
which has distributed most of the specimens seen by me it is here 
proposed as 
- Carex biltmoreana sp. nov. 
Culms arising in close stools from stout elongated and inter- 
woven rootstocks, erect, stout (3-4 mm. wide towards the base), 
3-7 dm. high, aphyllopodic, strongly purplish-tinged and some- 
what fibrillose at base, not strongly stoloniferous, exceeding the 
leaves, smooth or more or less roughened on the angles above. 
Leaves (not bracts) with well-developed blades usually three to five 
to a fertile culm, near the base but usually not bunched, the 
sheaths overlapping, loose, glabrate, white- or yellowish-scarious 
opposite the blades, the ligule often strongly prolonged, the blades 
at, 3.5-5 mm. wide, usually 1-2 dm. long, very rough towards apex, 
the lower much smaller than the upper ; terminal spike staminate, 
strongly rough-peduncled, linear, 2~3 cm. lon —~5 mm. wide, 
purplish brown with light midrib and hyaline margins ; pistillate 
spikes one to three, widely separate or uppermost occasionally 
approximate, erect, on slender usually much exserted peduncles, 
the spikes linear or linear-oblong, 1.5-3.5 cm. long, 4-8 mm. wide, 
loosely or somewhat closely flowered above, attenuate at base, the 
perigynia 6-20, ascending; bracts leaflet-like, shorter than the 
culm, the sheaths 5-30 mm. long; scales ovate, varying from ob- 
tuse to cuspidate, as wide as but rather shorter than the mature 
perigynia, straw-colored or purplish brown with green midrib and 
hyaline margins ; perigynia obovoid, obtusely triangular, 2.5-3.5 
mm. long, 1.5~2.25 mm. wide, many-nerved, tapering to a stipi- 
tate or substipitate base, abruptly rounded at apex and minutely 
beaked with abruptly bent beak or beakless, the orifice entire ; 
achenes triangular with convex sides, broadly obovoid, 2.5 mm. 
long, closely fitting the perigynia ; stigmas three. 
