2. Basal empty scales of the spikelets 

 3 or more 

 Style 2-cleft, its base persistent 

 as a tubercle on the achene 

 Bristles none ; culm monoce- 

 phalous 



Bristles usually present ; culm 

 usually polycephalous 

 Style 3-cleft, its base fused with 

 the top of the achene 

 B. Flowers all imperfect ; monoecious or di- 

 oecious sedges. 



Pistillate flowers subtended by a scale ; 

 achene bony 



Pistillate flowers enclosed by a perigy- 

 nium (utricle) 



A long hooked bristle protruding from 

 the perigynium 

 No hooked bristle 



io. Dichromena 



11. Rynchospora 



12. Cladium 



13. Scleria 



14. 

 15. 



Uncinia 



Carcx 



I. KYLLINGA, Rottb. Descr. et Ic. 2. 7773. 



Rootstock short or none ; culms tufted 

 Fertile scale of the spikelet setulose on 

 the keel I. K pumila 



Fertile scale of the spikelet smooth on the 

 keel 2. K. odor at a 



Rootstock elongated ; culms not tufted 

 Leaf -blades short or elongated 



Leaf-blades short, acute 3. 



Leaf-blades long, attenuate 4. 



Leaves reduced to sheaths 5. 



K pungens 

 K brevifolia 

 K. peruviana 



Type species, Kyllinga monoccphala, Rottb. 



i. Kyllinga pumila, Michx. Fl. Bor. Amer. 1 : 28. 1803. 



Roadside ditch, Stony Hill (Britton 832). Widely distributed in 

 temperate and tropical America. 



2. Kyllinga odorata, Vahl, Enum. II : 382. 1806. 



Kyllinga triceps, Griseb. Fl. Br. W. I. 568. 1866. Not Rottb. 



1773- 



In the lawns at Castleton Gardens (Britton 834) ; Temple Hall 

 (Harris 9390). Previously collected in Jamaica by W. Wright. 

 Widely distributed in warm and tropical America. 



3. KYLLINGA PUNGENS, Link, Hort. Berol. 1 : 326. 1827. 

 Banks and along roads at higher elevations. Near Silver Hill 

 Gap (Maxon 1 124) ; Cinchona (Shreve ; Harris 9501) ; Morce's Gap 

 (Britton 217); Hardware Gap (Nichols 104). Not hitherto re- 

 corded from Jamaica. 



4. Kyllinga brevifolia, Rottb. Descr. et Ic. 13. 1773. 

 Kyllinga monoccphala, Thunb. Fl. Jap. 35. 1 784. Not Rottb. 



1773- 



In moist ground, common. Cinchona (Harris 9496, 949.8). Marsh 

 near Balaclava (Marble 704). Grisebach in Flora British West 

 Indies attributes both K. brevifolia, Rottb. and K. monoccphala. 

 Rottb. to Jamaica but the latter is purely an Old World species, 



