TR1ANDRIA.— DIGYNIA. 59 



capillary ; spikelets 3-flowered, ovate, acute ; flo- 

 rets free ; culm branched at the base ; leaves hairy, 

 HAB. Sandy fields, and dry hills. Aug. 0. Culm 12- 

 18 in. high, branch, at base; stip. bearded; pan. 

 pyramidal, branched, not hairy at the base. 



18. P. hirsuta: culm erect, compressed, simple ; sheaths 



hairy ; panicle very large, capillary ; branches 



expanding, at length reflexed, bearded in the axils ; 



spikelets oblong, about 5-flowered ; corolla ciliate 



on the margin. 

 HAB. Sandy fields. July — Aug. U . Culm firm, 



straight; leav. longer than the culm ;Jl. purplish. 

 3. spectabilis : spikelets linear, 10-15-tlowered. 

 HAB. Sandy fields on the sea-shore. Taller than the 



preceding , spik. purp. -*- in. long. 



19. P. pectinacea : culm cespitose, oblique ; leaves hairy 



at the base ; panicle capillary, expanding, pyrami- 

 dal, hairy in the axils ; spikelets linear, 5 — 9- 

 flowered ; florets free, acute ; superior valve of 

 the corolla persistent. 

 1IAB. Sandy places — wet or dry. July — Aug. 0. 

 Culm 8-12 in. high, genie, or decumb. at the base ; 

 pan. large ; fl. purplish. 

 10. P. reptans : dioecious ; culm branched, creeping , 

 panicle fascicled ; spikelets linear-lanceolate, 12- 

 20-flowered ; florets acuminate. 

 HAB. Swamps and river banks. July — Aug. 0. 

 Culm a span long, slender; leav. subulate ; pan. 1- 

 2 in. long ; glum, very acute. 

 '). Eragrostis : panicle equal, spreading; the lower 

 branches hairy in the axils ; spikelets linear- 

 lanceolate, 9-15-flcwered ; florets obtuse ; root 

 fibrous. 

 HAB. Sandy fields, July — Aug. 0. Culm ]V> in. 

 high, genie, at base ; spik. large ; lead-colour ; jl. 

 often verrucosc on the keel. 



72. KCELERIA. 



'■ . pennsyhanica : leaves flat, and with the sheaths 

 loftl) pubescent ; panicle oblong, slender, rathe; 

 loose; calyx 2-flowered; glumes nearly equal; 

 the inferior oblong, obtuse and slightly mucronutc. ; 

 superior ralve of the con >qs. 



