18 C. B. Clarkb: 



Cyperus microdontus Torrey in Ann. Lyceum Neiv York III 

 (1836) p. 255, 430; Sauv. Fl. Cub. n. 2566 p. 171; Bocck.f in Flora 

 LXIV (1881) p. 77. 



Pycreus Olfersianus Neesf in Mart. Fl. Bras. II jmrs 1 (1843) 

 p. 8; non Cyperus Olfersianus Kunth. 



Hab. in Cuba: C. Wright n. 3571; Jamaica: Purdie; Trinidad: 

 Hart n. 2099. 



Distrib. var. in Africa, Asia, Oceania, America obvia. 



Obs. Cyperi scopellati L. C. Eich. exemplum, in herb. J. Gay conser- 

 vatum, est C. sphacelatus Eottb. 



Var. /. Halmiaiia C. B. Clarke, spiculis glumis nucibus perparvis. 

 Cyperus subulatus Neesf in Flora XI (1828) p. 335; BoecJc.f 

 ms.; non R. Br. 



Cyperus Hahnianus Boeck.f in Flora LYI (1878) p. 138. 



Hab. in India occideni: Sieber Agrost. n. 145; Martinique: 

 Hahn n. 700; Ins. Grenadine Bequia: H. H. Smith n. B. 347. 



9. Pycreus ferrugincus C. B. Clarke, spiculis paullo majoribus, 

 usque ad 2 cm. longis 3 mm. latis, saepe magis coloratis, ferrugineis 

 aut bruneis, interdum basi obscure lineari-lanceolatis; glumis paullo 

 magis remotis; ceteroquin ut P. polystacliyus var. laxiflora. 



Pycreus ferruyineus C. B. Clarke in Hook. f. Fl. Brit. Ind. VI 

 (1893) 593. 



Cyperus ferruyineus Poir. in Lam. Encyc. VII (1806) p. 261; 

 Kunth Enum. II p. 11. 



Cyperus Nuttallii C. Spreng. Neu. Entdeck. II (1821) p. 240. 



( 'yperus i^olystachyus varr. fcrruyinca et macrostachya Boeck. in 

 Linnaea XXXV (186768) p. 479. 



Hab. in Bahamas: Brace n. 493; St. Thomas: in herb. Mus. Brit 



Distrib. in Africa, Asia, Ameriea boreali; sed a /'. polystachyo var. fi 

 laxiflora vix certo distinguenda. 



10. Pycrcus propinquus Nees, rhizomate tenui, breviter descen- 

 dente; culmis caespitosis, 2 5 dm. longis; foliis cum % parte culmi 

 aequilongis, 2 3 mm. latis; umbella in 1 caput 8 16-stachyum con- 

 gesta; bracteis 3, usque ad 15 cm. longis; spiculis usquo ad 2 cm. longis 

 3y 2 mm. latis, 20 36-floris, luteo-stramineis, sat compressis, lineari- 

 bus, lateribus parallelis; glumis ovatis, vix acutis, paullo inflatis; nuce 

 cum 2 / 5 parte glumae vix aequilonga, obovoidea, levi, castanea, cellulis 

 extimis parvis, quadratis; stylo quam nux breviore, ramis 2. 



Pycrcus propinquus Neesf in Mart. Fl. Bras. II pars 1 (1842) p. 7. 



