MACKENZIE: NOTES ON CAREX—XIII 351 
leaves, light brownish at base, the dried-up leaves of the first 
year conspicuous; leaves with well- developed blades five to ai 
long; spikes five to ten, androgynous, densely aggregated into 
an oblong head, 2—4 cm. lon pe mm. wide, the lower at least 
well-defined and iin: nguieh ie, the staminate aries few with 
ovate-lanceolate cuspidate scales, the eight to twenty perigynia 
ascending or at length spreading; bracts bristleform, short but 
at least the lowest conspicuous; scales ovate, greenish valine 
with three-nerved green arma —_— idate or aristate, narrower 
than and (excluding awn) fro mewhat shorter than to erent 
feneth of body of perigynia; fone: a 3-3.5 mm. long, 2—2.25 
m. wide, ovate, broadest below middle and Ligne ieee 
and slightly spongy at base, le ome light green or in age 
yellowish-green, plano-convex, several- rather many-ribbed 
dorsally, nerveless or short nerved at base sentially, flat or nearly 
so ventrally, serrulate from above the middle, abruptly short- 
beaked, the beak 1 mm. long, rather widely bidentate with 
short- triangular te eth, hyaline within, both sutures grants 
achenes lenticular, ovoid-orbicular, 2 mm. long, 1.75 mm. wide, 
filling perigynia, abruptly substipitate, very short apiitlate: 
style 4 set slender, enlarged at — jointed with achene; 
stigmas two, reddi sh- brown, slender 
Type Locauity: Highlands, Hudson River, New York, 
Russell; figured by Boott as C. Muhlenbergii var. enervis Boott, 
on which C. plana is based. 
SPECIMENS EXAMINED* 
MaIneE: York, Fernald & Long 13009 (P.). 
MAssaAcHusETTs: Hingham, Plymouth County, Knowlton 
(P.,N.E.); “Mass.”’ Dewey (P.); Malden, W. Boott (H.); Stock- 
bridge, Dewey (H.). 
ConneEcTICUT: Waterford, Graves 212 (H.); Stamford, 
‘“A.W.D.” (H.); New Haven, Woodward (N.E.); Waterbury, — 
Blewitt 270 (N.E.); Cheshire, Bissell (N.E.); North Branford, 
Dudley (N.E.). 
* Specimens in this paper are cited from herbaria as sree Columbia 
University (Col.); Gray Herbarium, Harvard University (H.); K. K. Mac- 
kenzie (K.M.); New England Botanical Club (N.E.); New York ‘Botanical 
Garden (N.Y.): Philadelphia Academy of Natural Sciences (P.). 
