Populus. | CXLI. SALICINEX. (J. D. Hooker.), 639 
orbicnlar sinuately lobed or toothed, palmately on young shoots, base 
5-nerved more or less cordate, stigmas 2, 2-partite, arms linear, capsule 
pedicelled 2-valved. Brandis For. Fl.A73; Boiss. Fl. Orient. iv. 1193; 
Reichb. Ic. Fl. Germ. t. 614. 
N.W. HIMALAYA, alt. 410,000 ft., from Kunawur westwards, wild and cultivated, 
and in WESTERN TrBET.— DISTRIB. Western Siberia, Syria, Asia Minor, Europe, and 
N. Africa. . — 
A lofty tree in Europe, in India not exceeding 40 ft. (Brandis). . Leaves 2-4 ino 
dull green above; petiole 1-2 in., laterally compressed, Catkins hairy ; male 
2-4 in.; stamens 6-10; fein. shorter; bracts lanceolate, tips crenate, ciliate; dis 
shallow, entire. Capsule } in., shortly pedicelled. 
5. P. microcarpa, Hook. f. & Thoms. Herb. Ind. Or. 4495; leaf- 
buds and shoots glabrous, leaves long-petioled orbicular sinuate base 
-nerved rounded or subcordate, capsules minute subsessile. 
BHOTAN; about Panga and towards Chupeh, alt. 7600 ft., Grifith. "M 
Leaves 3—4 in. diam. when dry black above and grey beneath ; nerves 49 pars 
above the basal 3 petiole 1-2} in., very slender, laterally compressed. Fruiting spikes 
3-5 in., very slender, rachis tomentose. Capsules } in., broadly ovoid hoary, pedicel 
very short. 
Order CXLII. CERATOPHYLLEE. 
Submerged moneecious slender fragile branched herbs. Leaves whorled, 
dichotomously cleft into filiform toothletted lobes; stipules 0. Flowers 
minute, axillary. sessile. MALE FL. solitary; perianth (or involucre) o 
) narrow subvalvate 2-tid segments; stamens 20-30, filaments yery 
short; anthers erect, extrorse, connective at the top truncate or 2-toot ‘1 
EM. FL. Perianth of the male. Ovary sessile, ovoid, l-celled; style 
subulate, stigmatic on one side; ovule solitary, pendulous, orthotropous. 
ruit a small coriaceons ovoid or ellipsoid somewhat compressed nut 
terminating in an elongate subulate style, and with a styliform bry 
Projecting from above the base on either side. Seed exalbuminous ; Sea 2) 
straight, cotyledons thick, radicle very short inferior, plumule many-leaved. 
—Species one, very variable. 
CERATOPHYLLUM, Linn. 
CHARACTERS OF THE ORDER. 
C. demersum, Linn. Sp. PL 992; Gertn. Fruct. t. 44; Boiss. FT. 
prient. iv. 1202. C, verticillatum, Roxb. FI. Ind. ii. 624; Wight § Aru. 
Prodr, 309, 
a Lhrongbout Inpra and CEYLON, in tanks and still waters.—DrsTRIB. All temp. 
and tropical countries, . . . 
Stem 8 in. to 3 ft., densely leafy, green. Leaves about 1 in. long, one 
"Preading in the water, collapsing in a tassel when removed, variable in ue nes 
and amount of toothing. Segments of perianth (or involucre) subulate. Frut A 
variable.—I have failed in establishing species amongst the dried specimens v. " 
Indian forms of Ceratophyllum, but there are differences in those figured by Vigh ; 
^t require to be verified by living specimens, and especially the simple anc i ue 
[ «ments of the perienth, and the truncate and bicuspidate connectives of the anther s. 
ne very great variety in the fruits upon which species have generally wen 
founded, but in no Indian specimen have I seen the short lateral spines which are 
characteristic of the European species or variety submersum. The following are the 
Principal Indian forms of fruit. 
ae 
c. TUBERCULATUM, Chamiss. in Linnea iv. 504, t. 5, f. 6d; fruit. ellipsoi¢ 
VOL. v, ' Tt 
