24 C. B. Clabkk: 



j^lumae aequilonga, anguste obovoidea, trigona, nigra; stylo brevi, ra- 

 mis 3 linearibus. 



Cyperus hmnilis Kiinth! Emmi. II (1837) p. 23; Boech. in Lin-. 

 7iaea XXXV (1867—68) p. 499; Sauv. ad), n. 2572 p. 171 



Cyperus acuminatus Oriseh.! in Mem. Äcad. Amer. VIII (1862) 

 p. 534, PI Muh. (1866) p. 237 et Flor. p. 563. 



Hab. in Cnba: Combs n. 495, Eggers n. 5394, Poeppig, Liebmann 

 n. 752, Rugel n. 890, C. Wright n. 700. 



Yar. ß. elatior Britton, robiistior, culmis usque ad 14 cm. longis, 

 apice subtrialatis; capite usque ad 70-stachyo; nuce ovoidea, apice acute 

 pyrami data , luteo - brunea. 



Cyperus himiilis var. ß elatior Britton f in Bull. Torrey Club XV 

 (1888) p. 99 et in Donnell Smith PI. Guatemal. p. 48. 



Cyperus pygmaeus Liebm.! Mexic. Halvgr. (1851) p. 15. 



Hab. in Cuba: Liebmann; Martinique: Duss n. 476. 



Distrib. in Mexico et Guatemala. 



17. Cyperus ainalbilis Yahl, glaber, annuus, culmis caespitosis, 

 5 — 20 cm. longis; foliis cum Y3 — 72 P^^'^e culmi aequilongis 2 mm. latis; 

 umbella composita aut simplice, bracteis usque ad 5 cm. longis, cum 

 foliis consimilibus; spiculis in spicas 5 — 10 l^ixa^ fasciculatis, linearibus, 

 aureo-bruneis, usque ad 18 mm. longis 2 mm. latis, compressis; glumis 

 navicularibus, ovatis, truncatis, mucrone saepius minute excurrente, in 

 lateribus aurantiacis enerviis, in dorso viridi 3 — 5-nerviis; stamine 1; 

 nuce cum 2/5 P^^'te glumae aequilonga, obovoidea, trigona; stylo cum 

 nuce subaequilongo , ramis 3 linearibus. 



Cyperus amabilis Vahl Emmi. II (1806) p. 318; Kunth Enum. 

 II p. 108; Hemsl. Centr. Amer. Bot. III p. 444. 



Cyperus aureus H. B. K.f Nov. Gen. et Sp. I (1815) p. 205; 

 Kunth Enum. II p. 21; Boech. in Linnaea XXXV (1867—68) p.494; 

 Sauv.! Cuh. 71. 2569 p. 17 L 



Cyperus aurantiacus H. B. K. Nov. Ocn. et Sp. I (1815) p. 205; 

 Kunth Enum. II p. 20; Oriseh. PI. Cuh. p. 237. 



Hab. in Cuba: C. Wright n. 3356; Hispaniola: Mayerhoff. 



Distrib. per fere omnes terras calidiores sparsa. 



18. Cyperus uncinatus Poir. glaber, annuus, culmis caespitosis 

 3 — 15 cm. longis; foliis cum culmo subaequilongis, 2 — 27.3 i^im. latis; 

 umbellae saepius simplicis radiis — 5 cm. longis; bracteis cum um- 

 bella aequilongis, foliiformibus; spiculis 3 — 20-nira digitatis, 1 cm. 

 longis IY2 ^^^^- latis, ferrugineis aut subcastaneis, compressis, 15 — 50- 

 floris; glumis ovatis, navicularibus, valide 3 — 5-nerviis, carina in mu- 

 cronem recurvatum conspicuum excurrente; staminibus 3 — 1; nuce 



