THE FLORA HONGKONGENSIS. 129 
Ptychochilus septemnervis (Pl. Meyen. t. 12, B), which is a native 
of the Philippines, represents a distinct plant, and, though with 
wider leaves, doubtless much nearer the Ceylon and Silhet species 
than the present. 
40. Halophila ovata, Gaud.; Mig. Fl. Ind. Bat. iii. 230. 
A sterile specimen of this obscure plant, gathered by the late 
Dr. Harland in Kau-lung Bay in 1856, is in thy herbarium. 
41. Lemna minor, Linn.; Koch, Syn. Fl. Germ. ed. 3,11. 590; A. Gray, 
Man. Bot. N. Un. St. ed. 5, 479. 
In pools everywhere. Found in stagnant water throughout 
the whole world, except in the very coldest regions. 
*Pandanus odoratissimus, Linn. fil.; Kunth, Enum. Plant. iii.94. (= 
P. verus, Rumph.; Kurz in Seem. Journ. Bot. v. 125.) 
Common along the sea-shore, and often used for making hedges. 
Distributed throughout all the coasts of India as far as Arabia, 
in Assam, the Archipelago, Southern China, Tropical Australia, 
and Polynesia. This is the species referred in the ‘ Botany of 
the Herald’ to P. fascicularis, Lam., which Mr. Kurz says is a 
synonym, and not a distinct species, as described by Kunth. 
*Pandani sp. 
Another Serew-pine occurs not uncommonly in ravines and 
shady woods. It is stemless and with long mottled leayes, which 
are brittle and readily crack across, not breaking in two, but 
leaving the part above the fracture to hang down in a flaccid 
manner, The fruit, which I have only seen on one occasion, when 
two were gathered by the late Dr. Harland, is ovoid, and the 
drupes (which, I think, are collected in phalanges) are crowned 
by two strongly curved spines coalescent at the base. I have no 
Specimen of either foliage or fruit in my herbarium. 
"Phoenix farinifera, Roxb. Fl. Ind. iii. 785; Kunth, Enum. Plant. iii. 
257; Hance in Seem. Journ. Bot. vii. 15. (=P. acaulis? Benth. Fl. 
Hongk. 340.) 
If, as is most likely, this is identical with Loureiro's P. pusilla, 
that name, as the oldest, must be restored. 
*Thysanotus chinensis, Benth. ; Hance in Ann. Sc. Nat. Par, ser. 5, v. 
245; 
On the grassy hill-slope above the village of Pok fu lum, by 
the path descending from the Gap. 1 have shown in the above 
place that the petals of this species have as long and conspicuous 
à fringe as in its Australian congeners. 
LINN, JOURN.— BOTANY, VOL. XIII. K 
