■l 
CYPERACK-33 OF THE PIIILTPPINKS. 85 
Hook. f. n. Brit. Ind. 6: 009 ; VidaJ, Rev. PI. Vase. FiJip. 28.'^; Plianer. 
riiTninp'. Philip. 155; Hemsl. in Journ. Linn. See. 36 (1903) 215; Merrill, in 
Pliiiip. Joiini. Sei. 1 (1900) Suppl. 1: 30. Cypcrus venusius Moritzi ! Verz. 
ZoU. Pfl. 9G, non U. 33r. C. piptolepis Steud. in Z6\\. Verz. Ind. Archip. lieft 2, 
03; Cyp. 40; Miq. ! Fl. Nederl. ]nd. 3: 279. 
Philippines, (535 Cuming). Luzon, (867 Jagor) -^ (18G5 ^yi(■.hura) -^ (2308 
]fcrriU). Mindaxao, {142 Clcnmis) ; {S27 Co pcland) , 
Rare in tropical Africa; abundant in India, extending to Japan and Queensland. 
15. Cyperus Zollingeri Steud. in ZoU. Verz. Tnd. Arcliip. heft 2, (1854) 62. 
Umbel compound or simple; spikelets spicate, long linear, yellowish. 
-r 
Miq. Fl. Nederl. Ind. 3: 204; Hook. f. Fl. Brit. Ind. 6: 013; H.^msl. in Journ. 
Linn. Soe. 36 (1903) 219. Cypcrus rotundus Presl. ! Rel. ITaonk. 1: 175; Miq. 
Fl. Xedorl. Tnd. Suppl. 200, COO. 
Luzon, (7/at'/i/.e) ; (Meyen) ; {G47S Elmer), 
Tropical Africa, soutlieastern Asia to Bonru and Queensland; a plentiful 
species. 
16. Cyperus rotundus Linn. Sp. PI. od. 2, 67 purlini, nee. Linn. hb. propr. 
Stem thickened at base; spikelets flattened, reddish or pale, not yellow. 
Miq. ri. Nederl. Ind. 3: 274; Hook. f. Fl. Brit. Ind. 6: 615; Vidal, Rev, PI. 
Vase. Filip. 282; Plianer. Cuming. Philip. 155; Ilcnial. in Joum. Linn. Soc. 36 
(1903) 216. Cyperus hexastachyus Rottb. Descr. et Ic. 28. t. IJf. f. 2; Decaisne 
in Nouv. Ann. Mus. Paris, 3 (1834) 358. C Hydra Michx. Fl. Bor. Am. 1: 27; 
Presl, Rel. Haenk. 1: 175. C. hulhoso-sfolonifcr Miq. ! Fl. Nederl. Ind. Suppl. 
260, 559; Kurz in Tidschr. Nederl. Ind. 27 (1804) 222, non Steud. C. laevissimus 
Steud. ! Cyp. 32. C. curvatus Llanos ! Fragin. PI. Filip. 15. 
Philippines, (557, 715 Cwmm^) ; {\m\Vidal). Luzon, (1869 a, b, Wicftwra) ; 
(2780 .ir^ni/O. Samar, (944 Ja^or). Panay, (97 Oopelantf). 
In all warm countries; one of the worst pests in cultivated lands. 
There is in Linna^us's Herbarium only one example marked by his hand as 
Cypcrus rotundus; it is therefore the "type" of the species. It may be Mariscus 
Thunhcrgii Schrader; it certainly is not our Cypcrus rotundus Linn. 
17. Cyperus stolonifer Retz. Obs. 4 (1780; 10. 
Spikelets nearly terete (very obscurely compressed) ; glumes concave,, 
obtuse; other-wise as in Cyperus rotundus. 
Miq. FL Nederl. Ind. 3: 205; Hook. f. Fl. Brit. Ind. 6: 615; Hemsl. in Journ. 
Linn. Soc. 36 (1903) 217. Cypcrus hulho no- stolonifer Steud. ! in Zoil. Verz. 
Jnd. Archip. heft 2, 62; Cyp. 18; Miq. Fl. Nederl. Ind. 3: 266. 
Luzon, (717 Loher) ; Manila, {Ghamisso). 
Southeastern Asia, extending from Mauritius to Formosa and north Australia; 
a frequent, hardly common, species. 
18. Cyperus radlatus Vahl. Enum. 2 (1800) 369. 
A large erect annual; spikes cylindric, subdigitate; rhachcola of the 
spikelct with oblong persistent wings. 
Miq. Fl. Nederl. Ind. 3: 277; Hook. f. Fl. Brit. Ind. 6: 617; Vidal Rev. PI. 
Vase. Filip. 283; Phaner. Cuming. Philip. 155; Hemsl. Journ. Linn. Soc. 36 
(1903) 210. Cyperus invoXucrafus Poiret in Lam. Encycl. 7 (1800) 253; 
