Notes. 
467 
Kew, certain of the gemmae already showed many-celled filamentous 
outgrowths, and the same was the case with the gemmae on another 
specimen sent by Dr. Winter from Brighton (Woodcut 4). The 
germinating filaments most frequently grow out laterally {a, b, c), but 
sometimes from the end of the spindle (d, e). But after the first steps 
the further growth is exceedingly slow: — Woodcut 5 shows the result 
of culture for about six months at a moderate temperature. The 
filaments show characters similar to those of Tr. alatum , and though 
no sexual organs have been found upon them in Tr . Kaulfussii \ 
there is, I think, no room for doubt that they, as well as the fila- 
mentous growths which bear the gemmae, are of gametophytic nature. 
Here then is a further instance of apospory ; again it occurs in a fern 
grown in a close damp atmosphere and in shade, these being the 
conditions under which certain other examples have appeared. Nor 
is the apospory thus shown to occur in Trichomanes to be regarded 
as a mere sport, or so very rare and isolated a phenomenon, for we 
now see Tr. Kaulfussii from two separate collections showing the 
aposporous development profusely. The same was the case with 
Tr. alatum , a closely allied species, which was aposporous both in 
