Halorage@. | THE HIMALAYAN MOUNTAINS. | 211 
also in Europe and America; while Jussiga, of the tribe which is named after it, and 
found in most hot countries of the world, has species (J. repens and villosa) common 
every Where in the plains of India, with a species of Ludwigia (L. jussi@oides); L. diffusa 
is found in the Doon, the other species of this genus occur in Pegu, Java, and Mauritius. 
Trapa, as we have seen to be the case with other aquatic genera, extends over a great 
extent of latitude, being common every where in the waters of India and China, as well 
as of Cashmere, of Europe, and Siberia. 
Thirteen species of Epilobium have been found in the Himalayas. Of these, Z. spi- 
catum and parviflorum are also European. E. sericeum comes near E. hirsutum; E. lave, 
nob., near E. montanum. -E. Himalense, Herbertianum, decussatum, and larum, are the 
other species not previously published. Two species of Circa have been enumerated 
by Dr.Wallich ; of these, C. repens, found in Nepal and on Choor, comes near C, /ute- 
tiana, while that referred with doubt to C. intermedia, Ehr. varies much in the form of 
its leaves, some being almost round, and others like those of C. alpina. This is also 
fgund on Choor and at Mussooree. A third species is figured in this work from the 
neighbourhood of Kotgurh. 
Few of the plants of this family are possessed of any properties which render them 
useful, but the tribe of Hydrocaryes, formed occasionally into an order so called, are 
remarkable for the size of their seeds, and the quantity of fecula which they contain 
rendering them useful as food for man; hence Trapa bicornis is extensively cultivated 
in the lakes of China, and the nuts of 7. bispinosa, called Singhara, are sold in all the 
pazars in India; and aspecies, called by the same name, forms a considerable portion of 
the food of the inhabitants of Cashmere, as we learn from Mr. Forster, that it yields the 
government £12,000 of revenue ; and Mr. Moorcroft mentions nearly the same sum, as 
Runjeet Sing’s share, from 96,000 to 128,000 ass-loads of this nut yielded by the lake 
of Ooller. 
Epilobium laxwm ; caulibus laxis quadrilineatis, foliis inferioribus oppositis decussatis, superioribus 
alternis, omnibus breve petiolatis ovatis oblongis acuminatis basi cordatis semi-amplexicaulibus undulati 
serrulatis pilosis venosis, floribus axillaribus subsessilibus, petalis emarginatis, stigmate capitato.—Tab. 
48, £..2. : | aia 
Hab. Mussooree. 45 ; ide 
Circea cordata; caule rigido erecto pubescente, foliis cordatis acuminatis repando-denticulatis 
pubescentibus, capsulis rotundis—Tab. 48. fig. 1.—(a.) A flower seen laterally, b. from above ; inser- 
tion of stamens alternating with that of petals ;—(c.) bilobed petals;—(d.) anther seen in front and 
from behind ;—(e.) pollen ;—(f)_ filiform style and emarginate stigma ;—(g.) hispid capsule ;— 
(h.) the same opened ;—(i.) the seed. ; 
. Hab. Neighbourhood of Kotgurh in the rainy season. 
69. HALORAGE#. 
does not by its distribution indicate differences of cli- 
This being an aquatic family, 
mate, as its plants are found in streams and wet situations in various parts of the world. 
and has been found at Unalaschka, 
Thus, Hippuris is common to Europe and America, 
but not in India. Callitriche is common to India and Europe ; Myriophylum to both 
252 these 
