CYPERACEZE OF THE PHILIPPINES. 
85 
Hook. f. FI. Brit. Ind. 6: 609; Vidal, Rev. PI. Vase. Filip. 283; Phaner. 
Cuming. Philip. 155; Hemsl. in Journ. Linn. Soe. 36 (1903) 215; Merrill, in 
Philip.' Journ. Sei. 1 (1906) Suppl. 1: 30. Cyperus venustus Moritzi ! Verz. 
Zoll. Pfl. 96, non R. Br. 0. piptolepis Steud. in Zoll. Verz. Ind. Arehip. heft 2, 
63; Gyp. 40; Miq. ! FI. Nederl. Ind. 3: 279. 
Philippines, (535 Cuming). Luzon, (867 Jagor) ; (1865 Wichura) • (2308 
Merrill). Mindanao, (142 Clemens)-, (827 Copeland). 
Rare in tropical Africa; abundant in India, extending to Japan and Queensland. 
15. Cyperus Zollingeri Steud. in Zoll. Verz. Ind. Arehip. heft 2, (1854) 62. 
Umbel compound or simple; spikelets spicate, long linear, yellowish. 
Miq. FI. Nederl. Ind. 3: 264; Hook. f. FI. Brit. Ind. 6: 613; Hemsl. in Journ. 
Linn. Soe. 36 (1903) 21-9. Cyperus rotundus Presl. ! Rel. Haenk. 1: 175; Miq. 
FI. Nederl. Ind. Suppl. 260, 600. 
Luzon, (HaenJce) ; (Meyen) ; (6473 Elmer). 
Tropical Africa, southeastern Asia to Bouru and Queensland ; a plentiful 
species. 
16. Cyperus rotundus Linn. Sp. PI. ed. 2, 67 partim, nec. Linn. hb. propr. 
Stem thickened at base ; spikelets flattened, reddish or pale, not yellow. 
Miq. FI. Nederl. Ind. 3: 274; Hook. f. FI. Brit. Ind. 6: 615; Vidal, Rev. PI. 
Vase. Filip. 282; Phaner. Cuming. Philip. 155; Hemsl. in Journ. Linn. Soc. 36 
(1903) 216. Cyperus hexastachyus Rottb. Deser. et Ic. 28. t. Ilf. f. 2j Decaisne 
in Nouv, Ann. Mus. Paris, 3 (1834) 358. C. Hydra Michx. FI. Bor. Am. 1 : 27; 
Presl, Rel. Haenk. 1 : 175. C. bulboso-stolonifer Miq. ! FI. Nederl. Ind. Suppl. 
260, 559; Kurz in Tidschr. Nederl. Ind. 27 (1864) 222, non Steud. C. laevissimus 
Steud. ! Cyp. 32. C. curvatus Llanos ! Fragm. PI. Filip. 15. 
Philippines, (557, 715 Cuming) ; (1961 Vidal) . Luzon, ( 1869 a, b, Wichura) ; 
(27 86 Merrill) . Samab, (944 Jagor) . Panay, (97 Copeland). 
In all warm countries ; one of the worst pests in cultivated lands. 
There is in Linnseus’s Herbarium only one example marked by his hand as 
Cyperus rotundus ; it is therefore the “type” of the species. It may be Mariseus 
Thunbergii -Schrader ; it certainly is not our Cyperus rotundus Linn. 
17. Cyperus stolonifer Retz. Obs. 4 (1786) 10. 
Spikelets nearly terete (very obscurely compressed); glumes concave, 
obtuse; otherwise as in- Cyperus rotundus. 
Miq. FI. Nederl. Ind. 3: 265; Hook. f. FI. Brit. Ind. 6: 615; Hemsl. in Journ. 
Linn. Soc. 36 (1903) 217. Cyperus bulboso-stolonifer Steud. ! in Zoll. Verz. 
Ind. Arehip. heft 2, 62; Cyp. 18; Miq. FI. Nederl. Ind. 3: 266. 
Luzon, (717 Loher) ; Manila, {Chamisso) . 
Southeastern Asia, extending from Mauritius to Formosa and north Australia; 
a frequent, hardly Common, species. 
18. Cyperus radiatus Vahl. Enum. 2 (1806) 369. 
A large erect annual; spikes cylindric, subdigitate; rhacheola of the 
spikelet with oblong persistent wings. 
Miq. FI. Nederl. Ind. 3: 277; Hook. f. FI. Brit. Ind. 6: 617; Vidal Rev. PI. 
Vase. Filip. 283; Phaner. Cuming. Philip. 155; Hemsl. Journ. Linn. Soc. 36 
(1903) 216. Cyperus- involucratus Poiret in Lam. Encycl. 7 (1806) 253; 
