606 MACKENZIE: NOTES ON CAREX 
gined “‘boat-shaped” perigynia. Carex tenuirostris Olney, with 
which this species has been confused, is much like Carex athro- 
stachya Olney in appearance, and is the plant described by 
Kiikenthal as Carex macloviana var. pachystachya forma involucrata 
(Pflanzenreich 42: 197. 1909). Like Carex phaeocephala the 
present species is found on the higher peaks. 
SPECIMENS EXAMINED 
CALIFORNIA: Soda Springs of Tuolumne, Congdon, August 18, 
1890 (Bailey); Summit Valley, Sierra Nevadas, Pringle, September 
18, 1882 (Bailey); among summit rocks, Pyramid Peak, Eldorado 
County, 10,020 ft., Hall & Chandler 4716, August 1-2, 1903 
(type, in. Herb. Cal.); “Cal.” (C.). 
OREGON: Head of Wallowa River, 9,000 ft., Cusack 2479, 
August 17, 1900 (N. Y.). 
WASHINGTON: Skamania County, Suksdorf 5229, August 13, 
1905 (L.S.). 
‘ Carex Davyi sp. nov. 
Densely cespitose, the culms 2.5-3.5 dm. high, strongly bi- 
ennial, much exceeding leaves, erect but slender, sharply trl- 
angular, smooth on angles, brownish at base. Leaves with well- 
developed blades three to four to a fertile culm, on lower fourth, 
but not bunched, the blades flat or canaliculate, 1.5-2.5 mm. wide, 
mostly 8-12 cm. long, the sheaths strongly hyaline ventrally and 
fragile. Spikes mostly three, approximate in a head about 2.5 
cm. long, the spikes oblong-obovoid, 12-18 mm. long, 6-8 mm. 
wide, rounded at apex, clavate'and staminate at base, the perigym!4 
ten to fifteen, in several to many rows, closely appressed, the beaks 
erect. Bracts scale-like. Scales oblong-ovate, very obtuse, chest- 
nut with lighter center and hyaline margins, about width of but 
only half length of perigynia. Perigynia lanceolate, thin, green 
or in age straw-colored, 7.5 mm. long, 2 mm. wide, strongly many 
striate dorsally, less so ventrally, contracted into a substipitate 
base, narrowly margined from base, serrulate from middle of 
achene, tapering into a sharply bidentate beak, not differentiated 
from body, the apex and dorsal suture reddish tinged, obliquely 
cut dorsally at mouth. Achenes lenticular, oblong-obovoid, 2.5 
mm. long, 1.25 mm. wide, substipitate, apiculate, the slender 
style at length deciduous. Stigmas two. : : 
Carex petasata Dewey (C. Liddoni Boott), to which this species 
has been referred, has the perigynia practically concealed by the 
