364 BOTAKT. 



stipitate, nearly equal to the acute ovate scale, which is of a pale straw-color 

 with a white membranous margin ; achenium tawny, lenticular, contracted at 

 base. Culm 1-2° high, rigid ; leaves broad, linear, erect. — Sitka, (Bongard;) 

 Washington Territory, (Scouler;) Cahfomia, from the Sacramento to the 

 southern boundary ; Nebraska, (Hayden ;) Colorado, (Hall & Harbour, and 

 E. L. Greene.) Found in subalkaline meadows in Unionville and Thousand 

 Spring Valleys, Nevada, and in Jordan Valley, Utah ; 4,300-5,000 feet alti- 

 tude ; May-October. (1,227.) 



Caeex Hoodii, Boott. Spike composed of ten or more androgynous 

 ovate spikelets, generally naked, sometimes bracteate, closely congested, 

 staminate at top ; stigmas 2 ; perigynium ovate, beak bifid, (the orifice 

 deeply cleft in front,) purplish, nerved on both sideSj serrate on the margins 

 equal in breadth and length, sometimes longer than the acutely ovate striate 

 scale, which has a green nerve and hyaline margins ; achenium orbicular 

 with a contracted base. Culm 1^-2° high, leafy below, the rudimentary 

 sheathing leaves blackish-purple. — From Washington Territory to California, 

 (1772, 198f), and 2354 Brewer, the first at 9,000 feet altitude; 6215 and 

 6218 Bolander.) In the Wahsatch, near Salt Lake City ; 5,000 feet altitude ; 

 May. (1,228.) C. Hoodii, Boott, in Whipple's Report, Pac. R. R. Surv. 

 4. 153, is C. Brongniartii, Kth. 



Carex tenella, Schk. From New England to Michigan and the 

 Saskatchewan and northward to Arctic America, and south in the mountains 

 to Colorado and New Mexico. Uinta Mountains, iii Provo and Bear River 

 Canons; 7-8,500 feet altitude ; July, August. (1,229.) 



Caeex vitilis, Fries. Spike oblong, composed of 4-7 small few-flow- 

 ered androgynous spikelets, staminate at base ; stigmas 2 ; perigynium spread- 

 ing, oval or ovate-conic, beaked, the orifice deeply cleft anteriorly, scab- 

 rous above on the margins, irregularly nerved, (nerves of the same color, 

 those on the back obsolete or vanishing upward,) membranous, spongy at 

 base, longer than the acute or obtuse ovate scale ; achenium oval.-^(C. canes- 

 cens, Ij., Yar. vitilis, Gray; Manual.) Two forms occur : 



Forma beunnea. Arctic America ; Canada ; Mountains of New Hamp- 

 shire, Pennsylvania, Carolina, and Georgia. 



Forma pallida. Arctic America; New Hampshire; Massachusetts; 

 New Jersey, (Canby.) Uintas, near head of Bear River ; 8,000 feet alti- 

 tude ; August. (1,230.) 



