Dichromena 



Rynchospora 



Cladium 



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 10. 



Bristles usually present ; culm 

 usually polycephalous II. 



Style 3-cleft, its base fused with 

 the top of the achene 12. 



B. Flowers all imperfect ; monoecious or di- 

 oecious sedges. 



Pistillate flowers subtended by a scale ; 

 achene bony 13- Scleria 



Pistillate flowers enclosed by a perigy- 

 nium (utricle) 

 A long hooked bristle protruding from 

 the perigynium 14. 



No hooked bristle 15- 



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



'Rootstock short or none ; culms tufted 



Fertile scale of the spikelet setulose on 

 the keel I. 



Fertile scale of the spikelet smooth on the 

 keel 2. 



Rootstock elongated ; culms not tufted 

 Leaf-blades short or elongated 



Leaf-blades short, acute 



Leaf-blades long, attenuate 

 Leaves reduced to sheaths 



Uncinia 

 Carex 



K. pumila 

 K. odor at a 



3. K. pungens 



4. K. hrevifolia 



5. K. peruviana 



Type species, Kylliuga monocephala, Rottb. 



1. 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 1124) ; 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 monocephala, Thunb. Fl. Jap. 35. 1784. Not Rottb. 



1773- 

 In moist ground, common. Cinchona (Harris 9496, 9498)- Marsh 

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

 Indies attributes both K hrevifolia, Rottb. and K. monocephala. 

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



