37 



tt Culms and nsnalhj wider Icaf-hlades rather hard, more or less rigid, 

 t Panicle elongated, rather loosely flowered, plant tall, not ewspitose, or hut sUghthj 



so. 



3+. Calamagrostis inexpansa A. Gray, (iram. et Cyp. 1: No. 20 (1834); Torr. Fl. 

 X. Y. 2 : 445, t. 152 (1843). C. confinis A. Gray Man. Ed. 2, 547'(1856), not Nutt. ( ?)' 

 C. neglecta confinis Beal (irasses N. Am. 2 : 353 (1896). 



New Jersey and western New York to South Dakota and Colorado. 



Type specimen collected at Penn Yan, Yates County, N. Y., by Dr. Sail w.ll in 1833. 



Specimens examined. New Jersey : (A. Gray). Xew York : Penii Yan. ^'ates ( 'onnty, 

 (Sartwell) 1833. Pennsylvania: Lycoming County, (Mc:\Iiuu), ISfii). fUinois: 

 Chicago, (Babcock), 1873. Minnesota: (Sandberg), 18!ll. Iowa: Emmett County, 

 (Cratty), 1882; Aruistrong, (Cratty 311); Marshalltown, (Eckles), 1896. J/Js- 

 souri: Courtney, (Bush), 1890. South Dakota: Rosebud, (Wallace 31), 1896. 

 Wyoming: Albany County, (Buffuui 12), 1891. Colorado: Per, Gulch, altitude 

 2,432 meters, (Vasey), 1884. 



On the western limit of its range C. inexpansa appears to intergrade with C.hi/per- 

 borea elongata, hxit is in the main readily distinguished from any Ibrui of that 

 species by its less ca^spitose or not at all ca>spitose and less rigid habit, taller 

 culms less closely enveloped at base by the marcescent sheaths often longer and 

 proportionately narrower leaf-blades, longer and looser panicle with longer 

 iuternodes and branches, usually longer spikelets, and usually more pointed 

 empty glumes. 



CALAMAGROSTIS INEXPANSA CUPREA Kearney, var. n. 



Somewhat stouter and more rigid; panicle more densely llowered, 8r)uietimes 4 cm. 

 wide; spikelets snuiUer, 3 to 4 mm. long; empty glumes copi>er-colore(l or dark 

 purple, with copper-colored tips. 



Type specimen in the United States National Herbariuui, collected in shallow water, 

 Falcon ^^alley, Washington, by W. N. Suksdorf (910), July 9,18,1886. Distri- 

 buted as Deyeuxia canadensis Beanv. var. 



Specimens examined : Falcon Valley (Suksdorf 143, 202, 910), 1885-86. 



CALAMAGROSTIS INEXPANSA BARBULATA Kearney, var. n. 



Culms stout, pubescent Just below the strongly constricted nodes with short, reflexed 

 hairs, slightly scabrous for some distance below the pubescence ; sheaths strongly 

 twisted; jianicle rather rigid, purplish; awn very short, attached above the 

 middle, not equaling the glume, often entirely wanting. 



Type specimen in the United States National Herbarium, collected in ^Vlason County, 

 Wash., by Charles V. Piper (947), July 26, 1890. An imperfect specimen, not 

 showing the basal parts. May prove to be a distinct species. 



35. CALAMAGROSTIS CALIFORNICA Kearney, sp. n. 



Slightly glaucous, api)arently not ca'spitose, with elougated (sometimes 15 cm. 

 long), erect innovations; tall, strict but not rigid, slender culms; loug, narrow 

 leaf-blades and loug, narrow, contracted paTiicle. Culuis 7.5 to 10 dm. high, 

 with one or two long, loose, thin marcescent sheaths at base; nodes inconspicu- 

 ousliJ^ or not at all constricted; iuternodes 3, the two upper linally elougated 

 and exceeding their sheaths, the uppermost greatly exceeding both sheath and 

 blade. Sheaths rather loose, glabrous except the minutely scal)rous margins. 

 Ligule 2 to 3 mm. long, broadly truncate, firm-membranous, minutely ciliate. 

 Blades (of lower leaves and innovations) 2 to 4 dm. long (uiJiiermost cauline) 



1 Calamagrostis confinis Nutt. Gen. 1: 47 (1818) is based upon Arundo coh/(» /'s Willd. 

 Ennm. Hort. Berol., 127 (1809). Willdenow's description does not api)ly to C. inex- 

 pansa, for he describes the awn as geniculate and as resembling tliat of Arundo sylra- 

 tica Schrad. (C.sylvatica DC). What Willdenow's ])lant really was can not be 

 determined from his characters. Calamagrostis porleri A.Gray corresponds iu every 

 particular, except its short callus hairs. 



