358 MR. Н. N. RIDLEY ON THE FLORA OF THE 
CYCADE. 
Cycas Комрни, Miq. 
Woods on the sea-shores. Kwala Pahang. 
MONOCOTYLEDONES. 
HYDROCHARIDEÆ. 
HYDRILLA VERTICILLATA, Presl., var. LONGIFOLIA. 
Тһе common form in all the muddy ditches of the Peninsula. Kwala Pahang. 
, var. ROXBURGHII. 
Found floating in the Kelantan River. 
BLYXA MALAYANA, n. sp. Herba submersa, caule brevissimo. Folia plurima magni- 
tudine valde variabili, sæpe 6-pollicaria, raro pedalia vel ultra-pedalia, circiter 
2 pollicem lata, linearia acuta, tenuia, integra, costa distincta, atro-viridia. Scapi 
2-6-pollicares, plures complanati, pollicem lati. Spatha 2-pollicaris vel longior, sæpe 
flexa ad basin, anceps. Flos hermaphroditus, 4-pollicaris; ovarium complanatum. 
Sepala $-pollicaria, erecta, linearia, obtusa, rubescentia, tria. Petala tria, anguste 
linearia, alba, marginibus denticulatis, sepalis duplo longiora. Stamina tria, anguste 
linearia acuta. Anthere terminales lineares. Granule pollinis aurantiacze, globose, 
minute muricatule. Styli tres teretes acuminati, crassiusculi, staminibus longiores, 
albi, marginibus trichomatibus tectis. Capsula gracilis, subteres, 23-pollicaris, 
spatha inclusa. Semina copiosa, flavescenti-alba, elliptica, muricata et striata, 
apicibus obtusis, э-роШсат1а. 
Kwala Pahang in pools. Common also in Singapore and Malacca. 
This is a very common plant, which, like almost all submersed plants, varies greatly 
according to the depth of water in which it grows. Тһе above description is taken from 
specimens found in ditches in the Botanic Gardens, but the Pahang species is evidently 
the same one, though it is not in good condition. It grows quite submersed, the leaves 
lying flat upon the ground ; the flowers, however, project from the surface of the water. 
It is very constantly in flower, but the flowers are short-lived. 
| Віута Өті Мі, Planch. in Herb. Hook. (Fl. Brit. Ind. vol. v. р. 661), appears to con- 
sist of two or more species. It includes a nine-stamened plant collected by Sir W. Jones 
in Bengal, and by Parish at Moulmein ; and specimens in fruit from Chittagong, collected 
by Sir J. Hooker, and by Griffith in Malacca and Mergui. I do not doubt that the 
Malacca specimens collected by Griffith belong to B. malayana, mihi, which is so 
abundant in Griffith’s collecting-ground near Malacca; but, as that has only three 
“stamens, the Bengal and Moulmein specimens must be distinct. 
