Northern Reedgrass

Calamagrostis inexpansa A. Gray, N. Am. Gram. & Cyp. 1:
20. 1834.
Calamagrostis slricta var. brevior Vasey, in Rothr. Bot. Wheeler's Surv. 285. 1878. (Type from
Mosquito, Colorado, Wolf 1098.) Calamagrostis slricta var. robusta Vasey, in Rothr. Bot. Wheeler's Surv. 285. 1878. (Type from
Twin Lakes, Colorado, Wolf 1099.) Calamagrostis hyperborea Lange, Fl. Dan. 50: pi. 2942, f. 1. 1880. (Type from Greenland.) Deyeuxia neglecta var. americana Vasey; Macoun, Cat. Can. PI. 4: 206. 1888. (Type from Donald,
British Columbia, Macoun in 1885.) Deyeuxia neglecta var. robusta Vasey; Macoun, Cat. Can. PI. 4: 206. 1888. (Type from Alberta,
Macoun.) Calamagrostis robusta Vasey, Contr. U. S. Nat. Herb. 3: 82. 1892. (Presumably based on C. slricta
var. robusta Vasey.) Not C. robusta Muell 1861. Calamagrostis americana Scribn.; Shear & Rydb. Bull. U. S. Dep. Agr. Agrost. 5: 27. 1897. (Based
on Deyeuxia neglecta var. americana Vasey.) Calamagrostis inexpansa cuprea Kearney, Bull. U. S. Dep. Agr. Agrost. 11: 37. 1898. (Type from
Falcon Valley, Washington, Suksdorf 910.) Calamagrostis labradorica Kearney, Bull. U. S. Dep. Agr. Agrost. 11: 38. 1898. (Type from Bonne
Esperance, Labrador, Allen in 1882.) Calamagrostis hyperborea stenodes Kearney, Bull. U. S. Dep. Agr. Agrost. 11 : 39. 1898. (Type from
Marshall Pass, Colorado, Clements 206.) Calamagrostis hyperborea elongata Kearney, Bull. U. S. Dep. Agr. Agrost. 11 : 40. 1898. (Type from
Plummer County, Nebraska, Rydberg 1494.) Calamagrostis hyperborea americana Kearney, Bull. U. S. Dep. Agr. Agrost. 11:41. 1898. (Based on
Deyeuxia neglecta var. americana Vasey.) Calamagrostis micrantha var. sierrae M. E. Jones, Contr. West. Bot. 14: 9. 1912. (Type from Pratt-
ville and Susanville, California, Jones.) Calamagrostis neglecta var. inexpansa M. E. Jones, Contr. West. Bot. 14: 9. 1912. (Based on C. inexpansa A. Gray.) Deyeuxia hyperborea elongata Lunell, Am. Midi. Nat. 4: 218. 1915. (Based on Calamagrostis
hyperborea elongata Kearney.) Deyeuxia hyperborea stenodes Lunell, Am. Midi. Nat. 4:218. 1915. (Based on Calamagrostis hyperborea stenodes Kearney.) Calamagrostis elongata Rydb. Fl. Rocky Mts. 58. 1917. (Based on C. hyperborea elongata Kearney.) Calamagrostis wyomingensis Gandog. Bull. Soc. Bot. France 66: 299. 1920. (Type from Granger,
Wyoming, A. Nelson 3884.) Calamagrostis scopulorum var. Bakeri Stebbins, Rhodora 32: 47. 1930. (Type from Pagosa Peak,
Colorado, Baker 162.) Calamagrostis inexpansa var. robusta Stebbins, Rhodora 32: 48. 1930. (Based on C. slricta var.
robusta Vasey.) Calamagrostis inexpansa var. brevior Stebbins, Rhodora 32: 50. 1930. (Based on C. stricta var.
brevior Vasey.)
Culms tufted, erect, scabrous below the panicle, 50-80 cm. tall, with rather slender rhizomes; sheaths glabrous or somewhat scabrous, the basal ones numerous, withering but persistent; ligule 4-6 mm. long; blades firm, rather rigid, flat or loosely involute, very scabrous, 2-4 mm. wide; panicle narrow, dense, more or less lobed, 5-15 cm. long, the axis scabrous, the branches mostly erect, crowded and overlapping, very scabrous, 1-2 cm. long or sometimes 3-4 cm. long; glumes abruptly acuminate, scaberulous, 3-4 mm. long; lemma as long as the glumes, scabrous, the awn attached about the middle, straight or nearly so, about as long as the glumes, the callus-hairs half to three fourths as long; rachilla 0.5 mm. long, some of the hairs reaching the tip of the lemma.
Type locality: Penn Yan, New York (Sarlwell).
Distribution: Meadows, marshes, and wet places, Greenland to Alaska, and southward to Maine New York, Illinois, Missouri, Nebraska, New Mexico, and California.

Calamagrostis crassiglumis Thurber, in S. Wats. Bot. Calif
2:281. 1880.
Deyeuxia crassiglumis Vasey, Grasses U. S. 28. 1883. (Based on Calamagrostis crassiglumis Thurb.) Calamagrostis neglecta var. crassiglumis Beal, Grasses N. Am. 2: 353. 1896. (Based on C. crassiglumis Thurber.)
Culms erect, glabrous, rather rigid, 15-40 cm. tall, with creeping rhizomes; sheaths glabrous, the lower overlapping, somewhat papery; ligule 1-2 mm. long; blades flat or somewhat involute, smooth, except the scabrous margins, firm, about 4-5 mm. wide; panicle narrow, dense, spikelike, dull-purple, 2-5 cm. long; glumes ovate, rather abruptly acuminate, scaberulous, firm or almost indurate, 3-4 mm. long; lemma about as long as the glumes, broad, obtuse to abruptly pointed, the awn attached about the middle, straight, about as long as the lemma, the callus-hairs abundant, about 3 mm. long; raehilla 1 mm. long, the hairs reaching to the apex of the lemma.
Type locality: Mendocino County, California (Bolander 4766, 4787).
Distribution: Swampy soil, rare, Vancouver Island, Washington, and California (Mendocino County).

Perennials, Aquatic, leaves emergent, Terrestrial, not aquatic, Rhizomes present, Rhizome short and compact, stems close, Stems nodes swollen or brittle, Stems erect or ascending, Stems caespitose, tufted, or clustered, Stems terete, round in cross section, or polygonal, Stem internodes hollow, Stems with inflorescence less than 1 m tall, Stems, culms, or scapes exceeding basal leaves, Leaves mostly cauline, Leaves conspicuously 2-ranked, distichous, Leaves sheathing at base, Leaf sheath mostly open, or loose, Leaf sheath smooth, glabrous, Leaf sheath and blade differentiated, Leaf blades linear, Leaf blades 2-10 mm wide, Leaf blades mostly flat, Leaf blade margins folded, involute, or conduplicate, Leaf blades mostly glabrous, Leaf blades scabrous, rough ened, or wrinkled, Ligule present, Ligule an unfringed eciliate membrane, Inflorescence terminal, Inflorescence a contracted panicle, narrowly paniculate, branches appressed or ascending, Inflorescence solitary, with 1 spike, fascicle, glomerule, head, or cluster per stem or culm, Inflorescence branches more than 10 to numerous, Flowers bisexual, Spikelets pedicellate, Spikelets laterally compressed, Spikelet less than 3 mm wide, Spikelets with 1 fertile floret, Spikelets solitary at rachis nodes, Spikelets all alike and fertille, Spikelets bisexual, Spikelets disarticulating above the glumes, glumes persistent, Spikelets disarticulating beneath or between the florets, Rachilla or pedicel hairy, Glumes present, empty bracts, Glumes 2 clearly present, Glumes equal or subequal, Glumes equal to or longer than adjacent lemma, Glume equal to or longer than spikelet, Glumes 1 nerved, Glumes 3 nerved, Lemmas thin, chartaceous, hyaline, cartilaginous, or membranous, Lemma similar i n texture to glumes, Lemma 5-7 nerved, Lemma glabrous, Lemma apex acute or acuminate, Lemma mucronate, very shortly beaked or awned, less than 1-2 mm, Lemma distinctly awned, more than 2-3 mm, Lemma with 1 awn, Lemma awn less than 1 cm long, Lemma awn subapical or dorsal, Lemma awns straight or curved to base, Lemma margins thin, lying flat, Lemma straight, Callus or base of lemma evidently hairy, Callus hairs equal to lemma, Palea present, well developed, Palea membranous, hyaline, Palea shorter than lemma, Palea about equal to lemma, Palea 2 nerved or 2 keeled, Stamens 3, Styles 2-fid, deeply 2-branched, Stigmas 2, Fruit - caryopsis, Caryopsis ellipsoid, longitudinally grooved, hilum long-linear.