iOG IIORTUS JAMAICENSIS. 105 



yerj Trrnch crowded, sessile, acuminate, spreading, feriuginous ; glume cTiaffy, heaped, 

 unequal, sub-iinhricatc ; the inner ones more tender, narrower, less, one-flowered: 

 filaments three, \x-ry short; germ extremely small ; style longer than the glumes, 

 Irifid at the top, permanent; stigmas capillary, cirrhose ; at the base of the gerin are 

 , twO' bristles the length of the glumes ; seed iutlosed witliin the glumes, obovate, mostly 

 obconlate, blinitly tnree-cornered^ ferruginous, smooth. It is not a cyperus, because 

 the chaffs are not distich, and the seed is not three- sided. ii. 



7. GRACILIS. SLENDER. 



Culm three-sided, leafy, very long, filiform ; spilfes lateral, peduncled. 



Height froni three to six feet. Culm very long, simple, loose, striated; leaves 

 "hnoar, very long, sessile,, keeled, striated, serrate; spikes axillary; peduncles suh- 

 tarv, elongated, filii'orm ; spikelets in Bundles, small, six to ten, unequal, round, 

 and linear, sessile, ferruginous, smooth ; glumes chafty, manv, tmequal ; the lowest 

 small, the rest convex,, acuminate, imbiicate ; the interior ones more tender, smaller, 

 one flowered; filaments three, very short ; genn roundish ; style awl-shaped, scarcely 

 longer than the glumes, trifid ; stigmas capillary, reflexed ; seed three-cornered, very 

 sniiill, ferrustinous. It ^rows in the woods in the hicrhest luountuins. 



8. SETACEUS. BKISTIED. 



Ctilm thpee-sided, almost naked, leaves babde-.sliaped ; spikelets aggregate 3 

 flowers two-stamened. 



The height abouta foot. Culm simple, setaceous, weak ; leaves mostly shorter thau 

 the culm, . somewhat suiated, erect ; culms towar'is the upper part simply two-parted, 

 or subdichotomous,ir;to axillary, peduncled, aggregate; spikelets, th'ee to six in 

 number, awl-shaped and small ; lower peduncles often solitary, an/ inch long; upper 

 crowded, bundled, very short ; lower glumes smaller, . ovate, acute, keeled, termin- 

 ated by a very short awn ; upper glumes lanceolate, awnless, convolute at the top; 

 iilameuts two, very sliort ; style bifid ; stigmas capillary. At the sides of the gerur are 

 "two caj)illary bristles, the length r;f the glume ; seeds roundish, compressed at the 

 eilge, acuimnate, transversely wrinkled. This grows in dry pastures. 



9. PUSTLLUS. DWARF. 



Culm three-sided, naked, filiform ; spikelet-s terminating, sub-fascicled, sessile, 

 with a leaflet beneath, equalling the spike. 



HeigVit about an inch. Roots capillary, simple ; culms almost upright, capillary ; 

 leaves radical, equalling the culm, filiform, keeled at the base, sheathing, ciliate at 

 the edge, striated, smooth ; spikelets three or four, very small, one above another, 

 ovate, acuminate : under the lowest spike is an awl-shaped leaflet, sheathed at the 

 ISase ; glumes chaffy, heaped, imbricate, separating the flowers, ovate, keeled, awn- 

 Ifess, one-flowered; filaments three, the length of the chaffs; anthers linear; genn 

 Toundish ; style filiform, three-sided at the base, trifid at top ; stigmas capillary, re- 

 flexed ; seed roundish, bluntly three-cornered, rugged, ferruginous, appearing as it 

 were echinate, wiien examined by a microscope ; witliout which the parts of fructifica- 

 tion are not visible. It grows in the southern parts of Jamaica. 



10. SORhSAJtfENSIS. SURINAM. 



Culm leafy, three-sided ; peduncles corymbed, tiie lower ones -alternate, dis- 

 aant,,tlie upper ones crowded. 



P Fxom 



