OP ARTS AND SCIENCES: JUNE 11, 1867. 393 



Carices Novce a Stephen T. Olney, A. M., descripUe, 1868. 



Carex Bolanderi, Olney, n. sp. : spica elliptica pallida albo-viridi 

 demura lutescente e spiculis 5-6 (rarius 4-10) parvis ellipticis ses- 

 silibus plerumque androgynis basi masculis, superioribus oontiguis, 

 infima vel binis inferioribus remotis bracteatis ; stigmatibus 2 ; peri- 

 gyniis ovalibus vel ellipticis acuminato-rostratis bifidis plano-convexis 

 margine acutis serratis nervatis basi spongiosis squama ovata hispida 

 aristata albo-hyalina nervo viridi longioribus; acbenio orbiculato vel 

 ovato punctulato stramineo, basi styli plus minus bulbosa. — Califor- 

 nia, Yosemite Valley and Mariposa Big-tree Grove, Brewer, 1665; Dr. 

 Wm. Hillebrand, 2313 ; Bolander, 6201, 6209. This is closely allied 

 to C. Deweyana, Schweinitz, from which it differs in its less acutely 

 angled culm, more approximate and many- (10-30-) flowered spikes, 

 shorter bracts, the oval or elliptical and nerved perigynia, and long- 

 awned hispid scales. 



Carex athrostachya, Olney, n. sp. : spica globosa capitata in- 

 volucrata straminea e spiculis 8 - 20 basi masculis dense congestis vel 

 infima subinde discreta; bracteis 3-5 inferioribus foliaceis spicam 

 longe superantibus, basi expansa hyalino-marginata ; stigmatibus 2 ; 

 perigyniis ovato-lanceolatis in rostrum elongatum attenuatis basi spon- 

 giosis marginibus alatis serratis alte bifidis leviter nervatis ; squama 

 ovato-lanceolata acuminata membranacea ; achenio orbiculato plano- 

 convexo lucido nee punctulato. — California, Yosemite Valley, June 

 17, Brewer, 1650; Hillebrand, 2311, a var. ; Bolander, 6213; Silver 

 Valley, alt. 7,400 feet, Brewer, a variety. — Casspitose : culms acutely 

 triangular, leafy, 1^-2 feet high; leaves narrow, shorter than the 

 culm. Allied to C. sycnocephala, Carey ; from which it differs in its 

 shorter leaves, heads with more spikelets, bracts expanding at the base 

 into a membranaceous border, and broader and more ovate irregularly- 

 nerved perigynia. 



Carex straminea, Schk., var. congesta, Boott, in litt. Apr. 1863: 

 spica congesta, squamis castaneis. — California, Brewer, on Mount 

 Shasta, 1375, 1397, 1398, 1399. 



Carex silicea, Olney : "spiculis 2-10 pallidis demura stramineis 

 plerumque alternatim remotiusculis omnibus (terminali srcpe magis 

 conspicue) basi conico-masculis nudis, infima subinde composita ; 

 perigyniis ovalibus vel orbicularis e basi late alatis brevi plerumque 

 sensim rostratis compressis appressis plus minus plurinerviis squama 

 lanceolata acuminata acuta latioribus paulo longioribus vel asquantibus." 



VOL. VII. 50 



