990 BENGAL PLANTS. [Ceratophyllum. 
880. Ceratophyllum Linn. 
The only genus. Characters those of the order. 
2000. CERATOPHYLLUM DEMERSUM Linn. ; F. B. I. v. 639. C. ver- 
ticillatum F. I. iii. 624. 
In all the provinces, in ponds and ditches 
A submerged aquatic of still waters. Zing. Jhangi. 
V. GYMNOSPERME4, 
sbideapenn sh 0 or rarely (Gnetacew) 2-lobed or utricular. Flowers 
ways 1-sexual. Stamens few or many. Ovary and style 0; 
ovules domslt: cotyledons 2 or sometimes 3 or more 
Order CXXII. GNETACEZ. 
Trees or shrubs; branches jointed at the nodes. Leaves opp 
site, large and green, or minute scale-like; stipules 0. Flowers 
monecious or dicecious, in axillary or terminal spikes or cones ; 
bracts close-set or distant. ¢ Sepals 2-4, een a valvately 
2-lobed or spathaceous perianth. Stamens connate in a column 
of the united filaments ; anthers 2-8, subglobose, 1-3- ial sessile 
or subsessile on the column. 9? Ovule erect, with 2-3 coats, of 
which one is eee into a Eee tube with a discoid mouth. 
Seed dry or drupe-like; albumen copious or scanty; embry? 
straight ; sibgidtcsin sain radicle long, superior. 
881. Gnetum Linn. 
Evergreen climbing Re or erect trees; branches jointed ; 
leaves opposite, entire, penninerved. Flowers moncecious ial 
dicecious, whorled in the axils of the cupular bracts of axillary OF 
terminal, solitary or panicled spikes, often surrounded by jointed 
hairs. shoe’ narrowly clavate, entire or valvately 2-fd- 
i) 
ope by 
slits. ¢ Ovule ovoid or globose, the inner as 
