MACKENZIE: Nores on CAREX 607 
v Carex agrostoides sp. nov. 
Culms 4-8 dm. high, exceeding the leaves, roughened on the 
angles, the lowermost sheaths bladeless, conspicuous, the rootstalks 
short. Leaves with well-developed blades two to four to a culm, 
usually 2-3 dm. long, long-attenuate, 1-2 mm. wide, strongly 
involute, roughened towards the apex; head decompound, 4-7 
cm. long, 8-20 mm. wide, the lower one or two branches more 
or less separated, the upper closely aggregated; spikes very 
numerous, closely sessile, distinguishable with difficulty, ovate- 
oblong, usually 2-5 mm. long, 1.5-2.5 mm. wide, containing one 
to several perigynia in the middle, the remainder staminate ; bracts 
absent, or few and short (15 mm. long); scales ovate-oblong, 
obtusish to short-acuminate, brownish, with usually broad, whitish 
midrib, and conspicuous hyaline margins, wider than but slightly 
exceeded by the mature perigynia; perigynia lanceolate-cuneate, 
plano-convex in cross-section, 3 mm. long, 1 mm. wide, rounded- 
truncate at base, tapering at apex into a beak longer than the 
body, with serrulate margins and bidentate apex, the body nerve- 
less on inner, nerved on outer, surface ; achenes lenticular, 1 mm. 
long, 0.5 mm. wide; stigmas two. 
This species has long been represented in the Columbia College 
herbarium by two rather fragmentary specimens, but it was not 
until I received from Prof. E. O. Wooton two fine sheets collected 
by himself that I felt justified in describing it. Probably most 
closely allied to Carex latebrosa (supra), it is readily distinguished 
not only by the decompound head, but also by the narrow, long- 
beaked perigynia. The name given to this plant by me owes its 
origin to the strong resemblance the head has to the dried up, 
congested panicles of some species of Agrostis. 
The following specimens have been examined : 
New Mexico: Luna, northwest of Mogollon Mountains, 
Socorro County, altitude 6500 feet, Z. O. Wooton, July 28, 1900 
(type consisting of two sheets in Herb. New Mexico Agricultural 
College); Mangus Springs, Rusby 425, May, 1881 (Columbia 
College herbarium). | : 
: eng pagan Mountains, Rusby 426, April, 1881 
(Columbia College herbarium). 
