ix, c, 4 Bennett: Potamogetons of the Philippines 341 
*6. POTAMOGETON MALAINA Miq. 111. FI. Arch. Ind. (1871) 46. 
Potamogeton mucronatus Presl Epim. Bot. (1851) 245, non Schrad. 
Potamogeton japonicus Franch. & Sav. Enum. PI. Jap. 2 (1879) 15 
nomen solus. 
Potamogeton Wrightii Morong in Bull. Torr. Bot. Club. 13 (1886) 
158, t. 59. 
Potamogeton lucens Vidal Phan. Cuming. Philip. (1885) 155 ( Cuming 
1381). 
Potamogeton heterocarpus Maxim, in herb, et in litt. 
Luzon, “Cuming 1381, July, 1839, Prov. Albay” herb. Prague ! Prov- 
ince of Sorsogon, For. Bur. 12249 Curran ! June, 1908, specimen poor 
but probably belongs here: Province of Laguna, Lake Bay R. S. Williams 
201,1 ! July, 1905, Merrill 5107 ! March, 1906, Bur. Sci. 11892 Robinson 
& Ramos ! October, 1910. Mindanao, Lake Lanao, Mrs. Clemens 515, 
U8 ! 
Distribution: Borneo, Motley 671 ! Celebes, Teysmann ex Miquel 
1. c., Koorders 1895 in herb. Vienna ! Java, Zollinger 3278, 3778, 878b ! 
China, Yunnan, Delavay 1887, herb. Paris. ! Formosa, Henry 1208a ! 
Lien Chau, Graves in herb. Hance 22226 ! Liukiu, C. Wright 320 ! 
Corea, Faurie 219 (1906), 690 (1901)! Mandschuria, Litwinow 161,6, 
2377, 3350 ! Japan, Franchet et Savatier 209 ! Maximowicz “iter secun- 
dum” ! India, Bengal, Hamilton; Kashmir, Schlagilweil 1,615 ! 
Graebner in Das Pflanzenreich gives “Cuba, Wright No. 3711,” , but my 
specimen under than number is P. angustifolius Bercht. & Presl, and 
“Jamaica, MacFayden No. 1,1,” , this I have not seen but I doubt it belong- 
ing to P. Malaina; it is more likely to be P. occidentalis Sieber. The 
specimens referred to P. malaina from Guatemala, Morong in “PI. Gaut. 
3, 1893 (J. Donnell Smith)” are P. lucens L. var. Floridanus A. Benn.; 
Dr. Hance in Journ. Bot. (1885) 329, A. Bennett 1. c. (1890) 298, (1891) 
154, Bull, Herb. Boiss. (1895) 254, Journ. Linn. Soc. Bot. 36 (1903) 194. 
Potamogeton Gaudichaudii Cham, et Schlecht. in Linnaea 2 (1827) 199 
which I formerly queried as malaina, is a lucens form, but certainly not 
angustifolia Bercht. & Presl ( P . Zizii C. & S.) as considered by W. F. 
Wight in Contr. U. S. Nat. Herb. 9: 360. 
7. POTAMOGETON SUMATRANUS Miq. FI. Ind. Bat. Suppl. (1860-61) 
259, 597. 
“Sumatra occid. in fossis prope Padang et prope Padang Pandjang, in 
lacu Singkara” Teysmann leg., Vienna herb.!, Zollinger 1891. “In Stooten 
Padang, W. R. Sumatra leg. Teysmann No. 1139, herb. Sulp. Kurz.” Herb. 
Bogor. 
An obscure species. Zollinger’s specimen at Vienna has one flower spike 
only; the structure and shape of the leaves are much as in P. lucens, but in 
shape the leaves are very different from those of P. malaina. 
8. POTAMOGETON CRISPUS Linn. I have seen specimens from Sumatra, 
but failed to note in what collection. 
9. POTAMOGETON OXYPHYLLUS Miq. Ann. Mus. Bot. Lugd-Bat. 3 
(1867) 161. 
This occurs in Japan! and Corea! 
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