90 I. W. Clokey — Carex Notes. 



1.5-3 mm. wide, flat, slightly rough on the edges. Culm 

 otherwise naked except for a slender green leaf or bract 

 4-12 cm. below and not reaching the top of the inflores- 

 cence, with or without a pistillate spike. Sheaths over- 

 lapping, ventral band hyaline, white or tawny, easily rup- 

 tured. Terminal spike staminate, sessile or subsessile, 

 narrowly elliptic, 11-18 mm. long, 3-5 mm. wide. Fre- 

 quently one or two very small staminate or androgynous, 

 sessile spikes at the base of the terminal spike. Lateral 

 pistillate spikes 2-3, separated, upper sessile, the other 

 one or two short peduncled, ascending, elliptic, acute or 

 acutish, 8-20 mm. long, 4-8 mm. wide. All spikes dark 

 brown or black. Upper bracts scale-like, brown; lower 

 bracts slender, brownish, shorter than the subtended 

 spike. Scales acute or acutish, dull, dark brown, uni- 

 form, midrib obsolete ; staminate scales broadly lanceo- 

 late ; pistillate scales lanceolate, much narrower than and 

 one half to almost as long as the perigynia, hidden or 

 almost hidden by the perigynia. Perigynia strongly com- 

 pressed, sessile, glabrous, dull, broadly elliptic, 4-5 mm. 

 long, 2-3 mm. wide, texture thin, lower half white, upper 

 half and beak dark brown or black, lateral nerves usually 

 well denned; beak cylindric, one third millimeter long, 

 emarginate. Achene situated low in the perigynia, short 

 stipitate, oblanceolate, pointed at both ends, smooth, tri- 

 angular, tan colored, 2 mm. long, 8.-9. mm. wide. Stigmas 

 three. 



Rhizoma laxe csespitosum et stoloniferum. Culmus 30-40 cm. 

 altus versus apicem leviter curvatus. Folia culmo breviora car- 

 inata angusta fere glabra. Spiculae 3-5 remotae ± peduncu- 

 latae, ima longe-pedunculata, terminalis $ , altera $ brevis 

 adjecta, laterales 2 ellipticae fere turgidi. Bractea infirma 

 brevis evaginans spicam terminalem haud attigens. Squamae 2 

 lanceolatae acutae nigricantes. Utriculi squamas subaequantes 

 sed multo lationes patentes papyracei late ovales compressi 

 4-5 mm. longi stramineo-virides grosse purpereo maculati glabri 

 tenuiter plurinervii, haud stipitati in rostrum breve ore integro 

 vel bidentulo contracti. Nux elliptica subsessilis trigona. 

 Stigmata 3. 



The above description is based upon plants collected by 

 Dr. and Mrs. E. B. Payson, No. 2224, on dry rock slides on 

 the eastern slope of Grand Teton, Jackson's Hole, Wyom- 

 ing. All the material of this number has been examined. 

 Named for Mrs. Lois B. Payson. The type is deposited 

 in my herbarium. 



