Caricograpliy. 63 



Found at Sitcha in Russian America, and though the number of 

 stigmas is different, is clearly related to the preceding. 



C. Sitchensis, Prescott,*is the same as C. cryjptocarpa, Meyer, 

 described in the last No. of this Journal. 



No. 167. C. Houghtoniana, Torrey. 

 Tab. Bb. Fig. 91. . 



Spica staminifera solitaria erecta ; spicis fructiferis tristigmaticis 

 sublimis oblongis cylindraceis, infima exserte pedunculata, omnibus 

 folio-bracteatis sublaxifloris ; fructibus ovatis rotundis subinflatis ros- 

 tratis bifurcatis nervosis hispido-pubescentibus, squama ovata mu- 

 cronata subduplo longioribus. 



Culm a foot a more high, triquetrous, scabrous above, striate ; ' 

 leaves short, and shortest at the base ; bracts leafy, long, with short 

 sheaths; staminate scale oblong, obtuse, white on the edge, short- 

 mucronate ; stigmas three ; pistillate spikes 2 — 3, oblong, upper ses- 

 sile ; often a single fruit between the staminate and next pistillate 

 spike ; fruit ovate, round, dirty brown, rough-pubescent ; pistillate 

 scale ovate, mucronate, about half as long as the fruit,; color a light 

 green. 



Found at Lake La Biche, near the sources of the Mississippi 

 River by Dr. Houghton ; in the herbarium of Dr. Torrey ; is rela- 

 ted to C. dasycarpa, and C. Schweinitzii, 



No. 168. C. mirabilis, D. 

 Tab. Bb. fig. 92. 



Spica composita ; spiculis androgynis distigmaticis inferne stami- 

 niferis suboctonis ovato-globosis alternis sessilibus sub-dense aggre- 

 gatis ; fructibus ovatis sublanceolatis e margine scabris concavo- 

 convexis rostratis bidentatis subdivergentibus, squamam ovato-lan- 

 ceolatam vix duplo longioribus. 



Culm sixteen to thirty six inches high, erect, rather stiff, obtuse 

 angled, striate, scabrous above, slender ; leaves flat, striate, linear- 

 lanceolate, scabrous on the edge, sheathed towards the base, nearly 

 as long as the culm, shorter below ; spikelets6 — 10, roundish, ovate, 

 sessile, usually close together, with two stigmas, and with a few sta- 



* See note on preceding page. 



