New and Little Known West-Himalayan Liverworts. 30 ^ 
Exormotheca Tuberifera Kashyap. 
Solms-Laubach 1 has investigated the structure of Exormotheca 
pustulosa, hut several new points were made out in the species 
described below. 
The plants were found growing singly on dry and exposed 
eastern slopes. They are two or three times dichotomously branched 
with long linear lobes and closely attached to the soil. The lobes 
are up to 10 mm. long and up to, but usually much less than, 2 mm. 
broad (Fig. 1). The dorsal surface is green, has usually a deep 
narrow groove along the middle line and is covered with conspicuous 
Fig. 1. Exormotheca tuberifera: a, b, plants with ripe sporogonia, x 3; 
c, a plant seen from below showing tubers, X 3. 
stomata. The latter are raised above the general level of the 
thallus and are often confluent, two chambers opening by a single 
pore. The size of the stoma and the number of the cells surrounding 
the pore are very variable. The pore may be round or elongated 
and the cells surrounding it are not much different from the 
ordinary epidermal cells. The chambers are arranged in a single 
layer and are full of simple green filaments which reach nearly to 
the roof. The terminal cells of the filaments are elongated and 
tapering upwards and contain fewer chloroplasts than the lower 
cells (Fig. 2, a). In this respect the filaments resemble those of 
Fegatella conicaf but they are longer. Immediately below the floor 
of the chambers there is one layer of large cells and below them are 
the small cells of the thick midrib which strongly projects downwards. 
The purple ventral surface bears two rows of purple lunate over¬ 
lapping scales obliquely directed forwards and outwards. The 
scales are occasionally hyaline. They arise from the midrib and 
have an entire margin (Fig. 2, c). There is no trace of any 
filamentous appendage as has been described in other species of 
the genus. In one specimen a scale was observed with a filament 
1 Bot. Zeitung, Bd. 55, 1897. 
2 Cavers, “ On the structure and biology of Fegatella conica Ann. Bot., 
vol. 18, 1904, p. 90, PI. VI, Fig. 11 ; “Inter-relationships of the Bryophyta,” 
Fig. 25 (p. 45 of Reprint). 
