734 GRAMINE/E calamovilfa 



SPARTINA 



little shorter to slightly longer than the glume: basal hairs equalling or shorter 

 than the glume. In bogs, Washington to California and the Eastern States. 



Var. elongata Keai'ney I. c. 40. Less strongly cespitose and less rig- 

 id, with few sterile shoots; smaller spikelets and often less pointed empty 

 glumes. California to Brit. Columbia and Ontario. 



Var Americaua Kearney 1. c. 41. Panicle usually very dense: empty 

 glumes 1)^-3 lines long, usually very acute. Oregon to Brit Columbia and 

 Hudson JBay. 



C. crassiglumis Thurber Bot. Cal. ii, 281. Stems about 1 foot high , 

 erect, rigid: sheaths loose, smooth, longer than the internodes: ligules obtuse, 

 % line long or less: leaves 3-6 inches long, spreading, involute toward the acute 

 tips: panicle dense and spike-like, 3 inches long, deep purple, its branches 

 glomerate, 3-6 lines long, appressed: empty glumes broadly lanceolate or lance- 

 ovate, abruptly pointed, subcartilaginous with thin margins, hispidulous through- 

 out, hispid on the nerves, 3 lines long or less: flowering glume oblong-ovate, 

 toothed at the obtuse apex, minutely hispid, \% lines long; awn attached at the 

 middle or below, equalling or exceeding the glume: basal hairs numerous % as 

 long as the glume: palet oblon-f, about 1 line long, broadest at the apex. In 

 swamps, northei'n California to Brit. Columbia. 



CALAMOVILFA Hack. True Grasses, 113. (1890.) 



Tall grasses with stout horfzoiital rootstocks, elongated leaves 

 and numerous spikelets in more or less open panicles. Spikelets 

 one-flowered, the rachella not prolonged beyond the flower. 

 Glumed 3, one-nerved, acute, the two outer unequal empty : the 

 third longer or shorter than the second, with a ring of hairs at 

 base. Palet strongly 2-keeled. Stamens -3. Styles distinct, with 

 plumose stigmas. Grairi free. Seed adherent to the pericarp. 



C. loglfolia Hack. 1. c. Stems stout, 5-6 feet high: sheaths longer than 

 the inteniodes, smooth or more or less soft woolly: leaves very long and narrow, 

 with involute attenuate points: panicle 5-30 inches long, at first rather narrow 

 and close, but later spreading, its branches rather distant: spikelets compressed, 

 3-4 lines long: first glume cuneate, 3-8 lines long, second lance-linear and lon- 

 ger: flowering glumes as long as the second one, cuneate-lanceolate: basal hairs 

 two-thirds as long as the glume. In sandy places, Brit. Columbia to eastern 

 Oregon and Colorado. 



Trihe 4 Ohlorideee. Spihelets one- to several-flowered, in one-sided 

 digitate or fasciculate, rarely solitary, spikes or racemes. Flowering 

 glumes usually keeled, entire and unawned, or toothed and with one 

 or three straight awns. 



17 SPARTINA Schreb. Gen. 43. 



Glabrous perennial grasses with horizontal rootstocks, flat or 

 involute leaves and one-sided spikes in panicles. Spikelets nar- 

 row, borne in 2 rows on one side of a triangular rachis, articulated 

 with the very short pedicels below the glumes. Glumes 3, the 2 

 outer empty, keeled, very unequal, the third subtending a perfect 

 flower, keeled, equalling or shorter than the second. Palets often 

 longer than the glumes two-nefved. Stamens 3. Styles filiform, 

 elongated, with filiform papillose or shortly plumose stigmas. 

 Grain free,' laterally compressed'. 



