SEDGE FAMILY 



299 



32. Carex illota Bailey. 

 Small-headed Sedge. 



Fig 708. 



Carex bonplandii minor Boott, Proc. Acad. Phila. 77. 1863. 



Carex bonplandii angustifolia Boott, in S. Wats. Bot. Calif. 2: 233. 1880. 



Carex illota Bailey, Mem. Tcrrey Club 1: 15. 1889. 



Cespitose with short-prolonged rootstocks, the culms 1-2.5 dm. 

 high, slender but strict, roughened above. Leaf-blades short, flat, 

 1.5-3 mm. wide; spikes 3-5. gynaecandrous or pistillate, forming 

 a dense capitate brownish lilack head 6-10 mm. long and nearly 

 as wide : bracts not developed ; scales broadly ovate, obtuse, shorter 

 than perigynia, brownish black with light midvein and scarcely hya- 

 line margins ; perigynia ovate, plano-convex, 3 mm. long, mem- 

 branaceous, smooth, shining, nerved on both faces, rounded and 

 spongy at base, brownish lilack, at length spreading, the beak one- 

 third the length of the body, smooth or nearly so, emarginate, 

 hyaline at oritice ; achenes lenticular ; stigmas 2. 



High mountains, Canadian Zone; Wyoming and Colorado west to Washing- 

 ton and the Sierra Nevada of California. Type locality: Colorado. 



33. Carex laeviculmis Meinsh. 



Smooth-stemmed Sedge. 



Fig. 



709. 



Carex bolanderi sparsiflora Olney Proc. Am. Acad. 7: 407. 1872. 

 Carex deweyana sparsiflora Bailey, Bot. Gaz. 13: 87. 1888. 

 Carex laeviculmis Meinsh. Bot. Centralbl. 55: 195. 1893. 



Cespitose from slender short-elongated rootstocks, the culms 

 3-6 dm. high, weak, light brownish at base, roughened above. Leaf- 

 blades 1.5-2 mm. wide, light green, flat, soft; spikes 3-8, gynae- 

 candrous, widely separate or upper approximate, suborbicular, 3-10 

 mm. long, 3-6 mm. wide, with 3-10 appressed or at length spreading 

 perigynia, the beaks spreading ; uppermost spike long clavate i.t 

 base ; lowest bract more or less developed ; scales ovate, about 

 length of body of perigynia, hyaline, with conspicuous green mid- 

 vein ; perigynia oblong-ovate, plano-convex or concave-convex, 

 2.5-4 mm. long, 1.5 mm. wide, broadest near middle, green or 

 brownish-green, thin-walled, few nerved dorsally, lightly nerved 

 ventrally, rounded and sulistipitate at base, tapering into a sparingly 

 subserrulate beak one-quarter to one-third length of body, tlie 

 apex entire or bidentulate, obliquely cut dorsally; achenes lenticular; 

 stigmas 2. 



Wet shaded places, Transition and Canadian Zones; Idaho to Alaska, south 

 to El Dorado County, California; also in eastern Siberia. Type locality: 

 Kamtschatka. 



34. Carex interior Bailey. 

 Inland Sedge. Fig. 710. 



Carex scirpoidcs Schk. in Willd. Sp. PI. 4: 237. 1803 (in small part), not C. scir- 



poidea Mich.x. 1805. 

 Carex interior Bailey, Bull. Torrey Club 20: 426. 1893. 



Densely cespitose, the culms 2-3.5 dm. high, slender and wiry, some- 

 what roughened beneath head. Leaf-blades 1-2 mm. wide, flat or 

 somewhatcanaliculate; head 1-2 cm. long, the Z-A spikes approxirnate, 

 the lateral pistillate, suborbicular, 4 mm. long, with 3-10 widely 

 spreading perigynia, the upper long tapering and staminate at base; 

 bracts liTtle developed ; scales half the length of the perigynia, ovate- 

 orbicular, very obtuse, brownish, hyaline-margined all around, the 

 center lighter-colored, the midvein not sharply defined and not reach- 

 ing the tip ; perigynia plano-convex, ovoid, plump, 2.5 mm. long, 1.5 mm. 

 wide, straw-color or light brownish, rounded and spongy at base, very 

 narrowly sharp-margined, nerved dorsally, nerveless or obscurely 

 nerved at base ventrally, sparingly serrulate on upper margins, ab- 

 ruptly beaked, the beak one-third length of body or less, its teeth 

 very short, the ventral suture inconspicuous, the dorsal more devel- 

 oped; achenes lenticular; stigmas 2. 



Boggy meadows, Hudsonian Zone; Maine to Pennsylvania, westward to British 

 Columbia and south to Arizona, northern Mexico and northern California. Type 

 locality: P'enn Yan, New York. 



