18 C. B. CLArkE: 
Oyperus mierodontus Torrey in Ann. Lyceum New York III 
(1836) p. 255, 430; Sauv. Fl. Cub. n. 2566 p. 171; Boeck.! in Flora 
LXIV (1881) p. 77. 
Pycreus Olfersianus Nees! in Mart. Fl. Bras. II pars 1 er 
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. Oyperi scopellati L. C. Rich. exemplum, in herb. J. Gay conser- 
vatum, est CO. sphacelatus Rottb. 
en y. Hahniana C. B. Clarke, spieulis glumis nucibus perparvis. 
Oyperus subulatus Nees! in Flora XI Be. p. 335; Bo 
ms.; non R. Br. 
Oyperus Hahnianus Boeck.! in Flora LVI (1878) p. 138. 
Hab. in India occident.: Sieber Agrost. n. 145; Martinique: 
Hahn n. 700; Ins. Grenadine Bequia: H. H. Smitlı n. B. 347. 
9. Pyereus ferrugineus 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. polystachyus var. 8 laxiflora. 
Pyereus ferrugineus C. B. Clarke in Hook. f. Fl. Brit. Ind. VI 
(1893) 593. 
Oyperus ferrugineus Poir. in Lam. Eneye. VII (1806) p. 261; 
Kunth Enum. II p. 11. 
Oyperus Nuttallii ©. Spreng. Neu. Entdeck. IT (1821) p. 240. 
Oyperus polystachyus varr. ferruginea et macrostachya Boeck. in 
Linnaea XXXV (1867—68) p. 479. 
Hab. in Bahamas: Brace n. 493; St. Thomas: in herb. Mus. Brit. 
Distrib. in Africa, Asia, America boreali; sed a P. polystachyo var. ß 
laxiflora vix certe distinguenda. 
10. Pyereus propinguus 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; spieulis usque ad 2 cm. longis 
31/, mm. latis, 20— 36-floris, luteo-stramineis, sat compressis, lineari- 
bus, lateribus parallelis; glumis ovatis, vix acutis, paullo inflatis; nuce 
cum ?/, parte glumae vix aequilonga, obovoidea, levi, castanea, cellulis 
extimis parvis, quadratis; stylo quam nux breviore, ramis 2. 
Pyereus N in Mart. Fl. Bras. II pars 1 aen p- 7. 
