RUSH FAMILY 



357 



15. Juncus dudleyi Wiegand. 

 Dudley's Rush. Fig. 869. 



Juncus dudleyi Wiegand, Bull. Torrey Club 27: 5_M. 1904. 



Stems tufted, 3-12 dm. high, pale green, wiry, 

 striate-grooved. Leaves basal, with blades about 

 half the length of the stems, narrowly linear, flat 

 or somewhat involute ; panicle 25-50 mm. high, 

 usually rather congested, few-flowered, consider- 

 ably exceeded by its lowest leaf ; perianth green 

 or pale straw-colored, 4-5 mm. long, the seg- 

 ments lanceolate-subulate, acute, more or less 

 spreading, firm, scarious-margined, nearly equal ; ^, 

 stamens 6. about half as long as the perianth ; 1 

 anthers slightly shorter than the filaments ; cap- 

 sule ovoid-oval, about three-fourths the length of 

 the segments, somewhat apiculate ; seed oblong, 

 apiculate at each end. 



In damp soil and o]ien places. Canadian and Tran- 

 sition Zones: eastern Washington to Maine, Missouri and 

 Arizona. Type locality; Ithaca, New York. 



16. Juncus brachyphyllus \\'ieg'and. 



Fig. 870. 



Short-leaved Rush. 



Juncus brachyphyllus Wiegand, Bull. Torrey Club. 27: 519. 1900. 



Stems tufted, erect and stiff, 4-5 dm. high, about 1.5 

 mm. in diameter, conspicuously grooved. Leaves basal, 

 their blades 8-12 cm. long, spreading, flat, 1.5-2 mm. 

 wide, rarely involute, auricles of the sheaths produced 

 above the insertion and scarious ; panicle 2-6 cm. long 

 or sometimes capitate, densely many-flowered ; bracts 

 2-9 cm. long, leaf-like ; perianth pale straw-colored, 5 

 mm. long, the segments subulate, slightly unequal, the 

 outer scarious-margined below the very acute pungent 

 apex, the inner scarious to the top ; stamens one-half 

 the length of the perianth ; anthers nearly as long as 

 the filaments ; capsule rather narrowly oblong, obtuse 

 or retuse, equalling the perianths ; 3-celled ; seeds apic- 

 ulate at each end, areolate. 



Open moist grassy places, Transition Zone; eastern Washing- 

 ton and Oregon to '\\'yoming and New Mexico. Type locality : 

 Upper Platte River. 



17. Juncus confusus Cuville. 

 Colorado Rush. Fig. 871. 



Juncus confusus Coville, Proc. Biol. Soc. Wash. 10: 127. 1896. 



Stems sparingly tufted, slender, erect, 4-5 dm. high, some- 

 what grooved. Leaves basal, two-thirds the length of the 

 stems, the sheaths narrow, close, the blades almost filiform, 

 thick but flat and usually involute ; auricles produced above 

 the insertion of the blade, scarious and whitish ; inflorescence 

 compact and capitate, 0.5-2 cm. long ; bracts 2-7 cm. long, 

 filiform ; perianth 3.5-4 mm. long, pale ; the segments straw- 

 colored, subulate, merely acute, not pungent, with a fuscous 

 stripe on each side, the margins all broadly scarious to the 

 apex ; anthers shorter than the filaments ; capsule oblong, 

 firm, a little shorter than the perianth, conspicuously triangular 

 and retuse at the apex, completely 3-celled ; seeds apiculate at 

 both ends, coarsely and shallowly areolate. 



Open moist grassy places. Transition Zone; eastern Washington to 

 Montana, south to \\'yoming and Colorado. Type locality: North Park, 

 Colorado. 



