;556 WTLLTS : MORPHOLOGY OF THE PODOSTEMACEÆ 
The secondar}^ shoots are like those of the other Dicræas, 
and ultimately the lower end of the thallns, rarely more than 
about one-third of it, becomes floi-iferoiis, just as in D. elon- 
gata. The floral shoots form in the way described above 
for D. dichotoma, but the bracts are broader in proportion 
to their length, just as in D. Wallichii, and when the tips 
have fallen away, are almost helmet-shaped. The flower 
emerges as soon as the tip of the spathe is exposed to the air, 
and is wind-fertilized, probably, as usual, mainly by its own 
pollen. The non-flowering part of the thallns does not 
become woody, and falls away on exposure, just as in 
D. elongata. 
Rejuvenescence takes place just as in D. elongata, and is 
very common. 
1). sty losa fnco ides, Willis. 
Habitat. — -In general this is the same as that affected by 
the preceding form, with which it is commonly found 
associated ; it is less often found mixed with D. elongata, 
Lawia zeylanica, or Hydrobryum olivaceum. Both this 
form and the last may be seen in perfection, forming a very 
striking sight, at the confluence of the (Juru-oya with the 
Hulu-ganga, near Teldeniya, a little below the ford over the 
former ; the water is clear, not muddy like that of the 
Mahaweli-ganga, and the plants can be seen to some depth. 
Dry Season Appearance. — When in fruit the thalli are 
almost exactly like those of the preceding, but a trifle broader. 
Germination and Life History. — The seedlings are very 
hard to find, and I have only been able to get two of them, 
both at the stage shown in PI. XXII., fig. 2. The primary 
axis is like that of D. elongata, short and stout, with a hap- 
terous base and endogenous thallns arising nearly opposite 
the hapteron. The growing apex is broken off in both my 
specimens, but is probably like that of the mature plant. 
The thallns broadens out at once much more than in D. elon- 
gata, rapidly becoming nearly circular in outline, and is 
