OF INDIA AND CEYLON. 
185 
No. 301. Tanna, 30th December, 1844: ‘‘I enclose some 
pretty good specimens of Lawia, as well as of a second 
species which I have just discovered at a height of about 
2,500 feet. There are also a few more specimens of Podoste- 
mon ecostatum. Of all these I propose to send you specimens 
hereafter preserved in spirits. These curious plants have 
no roots, and appear to grow in the manner of Algæ.” 
No. 288. Tanna, 27th August, 1847 (forwarding box of 
plants) : ...... “ are in it specimens of rocks covered with the 
lichen-like fronds of the two species of Podostemoneæ, of 
which poor Griffith proposed to constitute a new genus, but 
they evidently belong to Tristicha, and are allied to 
T. ceyianica of Gardner, described in the Calcutta Journal of 
Natural Plistory.” 
In 1849 appeared Tulasne’s preliminary list of the order 
in this he classifies the Podostemaceæ for the first time 
into their groups, and describes the following Indian 
species:— 
Dicrœa, Du Petit-Thouars 
Wallichii 
dichotoma 
Wightii 
rigida 
elongata 
Podostemon, Michx. 
SLibulatus, Gardn. 
Hydrobryum, EndL 
olivaceum 
griseum 
Griffithii 
Mniopsis^ Mart. 
Hookeriana (Podostemon 
ecostatus Griff, mss.) 
Laioia^ Griff, mss. 
zeylanica (Tristicha 
ceyianica, Gardn.) 
pulchella 
longipes 
All these have been mentioned above, mostly as species of 
Podostemon ; the last two named are those collected by 
Law, 
In his great monograph of the order,f published a few 
years later, Tulasne describes the above species in further 
Podostemacearam Synopsis Monographica, Ann, Sc. Nat., 3me Ser., t. 
XL, 1849, p. 87. 
t Monographia Podostemacearum, Arch, du Museum d’Hist, Nat., VI., 
1852 . 
