Cyperaceae. 19 



Cyperus Olfersianus Kunthf Enum. II (1837) p. 10; Boeck. in 

 Linnaea XXXV (1867 68) p. 439; Sauv. Cub. n. 2564 p. 171; 

 non Pycreus Olfersianus Nees. 



Hab. in Hispaniola: Herb. Hennecart (Jacqnemont?). 



Distrib. in Africa, Mexico; frequens in America australi. 



11. Pycreus helvus C. B. Clarke, umbellae radiis 3 5 usque ad 

 2 5 cm. longis; spicis 6 20-stachyis; spiculis 2y 2 mm. latis, lanceo- 

 latis 4 8-floris, aut linearibus usque ad 20-floris, multum compressis; 

 glunris rigide imbricatis neque inflatis; ceteroquin ut P. propinquus Nees. 



Cyperus densus Link Jahrb. III (1820) p. 83; Humboklt ms. 

 fide I/ink. 



Oyperus helvus Liebm.! Mexic. Halvyr. (1850) p. 9. 



Cyperus ambiyuus Liebm.! Mexic. Halvyr. (1850) p. 11; non 

 Steud. 



Cyperus correctus Steud.! Cyp. (1855) p. 7. 



Cyperus varieyatus Griseb. Flor. (1864) 562; Sauv.! Cub. n. 2567 

 p. 171; non H. B. K. 



Cyperus Jacquemontii Boeck.! in Linnaea XXXV (1867 68) 

 p. 442. 



Cyperus Olfersianus y. elatior Boeck. ! in Linn. XXX V (1867 68) 

 p. 440. 



Cyperus Humboldtianus Schultes in Boem. et Sch. Syst. II Mant. 

 (1824) p. 100; Kunth Enum. II p. 11; Boeck. in Linnaea XXXV 

 (186768) p. 441. 



Cyperus Olfersianus Boeck. in Enyl. Jahrb. I (1881) p. 362; 

 C. B. Clarke in Journ. Linn. Soc. XXI (1884) p. 62 partim; non 

 Kunth. 



Cyperus Jacyyei Boeck. Cyp. Novae. Heft 1 (1888) p. 2. 



Cyperus melanostachyus Kunth Enum. II (1837) p. 10 partim; 

 var. pallida Schlecht. ms. fide Boeck. 



Hab. in Cuba: C. Wright n. 706, Sagra, Combs n. 428; Jamaica: 

 Purdie; Hispaniola: Jacquemont. 



Distrib. in Mexico et Gruatemala frequens; in Brasilia australi et Monte- 

 video rara. 



12. Pycreus angulatus Nees, rhizomate elongato, tenui; culmo 

 6 10 dm. longo; foliis cum 2 / 3 parte culmi aequilongis, usque ad 



4 5 mm. latis; umbellae simplicis radiis 3 8, usque ad 5 10 cm. 

 longis; bracteis 4 5, usque ad 2 3 dm. longis; spicis 3 20-stachyis, 

 basi interdum subcompositis; spiculis spicatis, usque ad 16 mm. longis, 



5 mm. latis, 22-floris, compressis, luteo-stramineis aut fuscescentibus; 

 glumis ovatis, inflatis, in dorso viridi 3-nerviis, in lateribus lucidis, 



2* 



