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NEW MALAYAN PLANTS 69 
HA while the broader lower lip has the lobes turned down. 
I know no other instance in the whole order of this form of — 
In all other species the corolla, though usually irregular, has 
longer or shorter tube, with the lobes erect or reflexed, but the 
mouth of the tube is cireulat and open. The cup-shaped bracts 
are alsu peculiar, but somewhat similar ones occur in D. citrina 
Ridl. Finally, when one compares its stout shrubby habit with 
that of such a plant as the stemless soft D. incana or the herbaceous 
creeping D. reptans, one cannot avoid thinking that the genus as at 
present arranged is rather too comprehensive. 
The flowers of D, corchorifolia are white, usually apple-green in 
the khtoats and sometimes tinted or stained with ie purple. It 
grows on ba nks or rocks on Penang Hill; on the hill Bujong 
Mab in Perak; and along the Pahang track fig Selangor, at 
an altitude of about 2000 ft. 
Enhydrias, gen. nov. Hydrocharidearum. 
— submersa ramosa canlibus gracilibus. Folia alterna 
angusta linearia acuminata minute dentata. Flores solitarii axil- 
lares Sale basibus in vagina lon nga as saree Ca yeis 
tuba longa gracilis, lobi lanceolati acuti virides. ala 8 li 
multilongiora anguste linearia obtusa alba 
tubi adnata brevia, antheris linearibus oe Styli 3 quam 
stamina breviores cylindrici. Capsula angu ta cylindrica in vagina 
a ovula plura anatropa. Semina fnsiforciin papillosa. 
angustipetala, sp. unica. Herba A ad 24 pollices longa. 
Folia linearia acuminata, ollicis longa, 745 — lata, alterna, 
a vel 
Stadia padiiea parva. Copala NP longa , semina circiter 
14 fusifo ormia, olivacea, pustulis in seriebus tri 
Common in fresh water, ponds and ditches. Singapore, avery: 
where; Malacca, at Merliman ; : Perak, Dindings; Pahang, near 
ekan. 
This plant ti almost - soon» as @& plies with the 
flowers of a Bilywa. It forms thick masses in pon and ditches, 
and is quite a pest i in the nnn n lakes, meuing with at rapidity. 
The whole plant is submerged, except the upper part of the perianth- 
he leaves are narrow, much like thos e of epee 
of an inch apart, except near the ‘flowers, where 
ay 
processes. The plant flowers all the yee 
often dotted all over with its small w wers. 
