442 Britton: Studies of West Indian plants 



C. granulans. It would therefore appear that C. nanus was 

 entered as Jamaican by Mr. Clarke in error. C. granulans on 

 the other hand is now known to me to inhabit dry soil at Long 

 Acre Point near Black River (Britton 1383). 



Cyperus ignotus sp. nov. 



Perennial, glabrous; culm rather stout, smooth, bluntly 3- 

 angled, about 5 dm. high. Basal leaves as long as the culm or 

 longer, smooth, 2.5-4 mm. wide, those of the involucre similar, 

 much longer than the inflorescence, sometimes 3 dm. long; umbel 

 compound, its primary rays 8 cm. long or less; spikelets compressed, 

 capitate, 6-8-flowered, the heads numerous, 8-10 mm. in diameter; 

 rachis wingless; scales ovate-lanceolate, mucronulate, very faintly 

 nerved, closely appressed and overlapping, 2 mm. long; style 3- 

 cleft; achene oblong, trigonous, 1.3 mm. long, about twice as long 

 as thick, narrowed at both ends. 



In damp, shaded places, near Vinegar Hill, St. George, at about 



1,100 m. alt. {Harris 12350). Plant with the habit of C. elegans 



L., but with flat leaves and quite different spikelets. 



Eleocharis nodulosa (Roth) Schultes; R. & S. Mant. 2: 87. 



1824 



Scirpus nodulosus Roth, Nov. PI. Sp. 29. 1821. 



Swamp, Belle Vue near Spanish Town {Harris 12179). 



Distribution: Southern United States; Cuba; Hispaniola; 

 Porto Rico; Antigua; Guadeloupe; continental tropical America. 



Eleocharis microcarpa Torr. (E. minima Kunth), was re- 

 corded by Mr. Clarke as collected in Jamaica by Purdie, but his 

 determination of the specimen from the interior of Manchester 

 preserved in the Kew herbarium was subsequently doubted by 

 Mr. Clarke, and we have no other knowledge of the existence of 

 this species in Jamaica. 



Stenophyllus junciformis (HBK.) 



I sol epis junciformis HBK. Nov. Gen. 1: 222. 1815. 

 Scirpus juncoides Willd.; Griseb. Fl. Br. W. I. 572. 1864. 



Summit of Bull Head Mountain (Underwood 3364); Liguanea 

 Ridge, St. Andrew (Harris 12219, I2 345)- 



Distribution: Cuba; South America. 



