126 THE JOURNAL OF BOTANY 
from whatever pedigree it be derived. Imperfect segregation of fern- 
leaf from palm-leaf occurs asararity. The original introduced plant 
was thrum-eyed, but the pin-eyed is sii preemie cultivated 
now. Thrum-eye is dominant over pin-eye. ‘‘ Homostyled’’ forms 
have appeared, and their character is recessive to hath pin and 
thrum. The stellata and sinensis types give a blend-form on crossing. 
In the case of colour certain complications exist. Pure white with 
green stem is recessive to most and probably to all colours; but the 
evidence suggested that us a tinged or flaked white with a reddish 
stem is crossed with colour, the colour is practically recessive, as in 
poultry. ore Ma sgigr on this important point were needed. 
Pinks are recessive to mauves, and consequently mauves cannot be 
bred true without individual selection. Blue is often alt together 
disintegrated on crea ad gain reappearing. Some hetero- 
zygous types exis a g. certa n lavenders, and certain fancy reds. 
These each yea e off two or more distinct colour types from the 
. self. crossing” oF Wie say are formed. Of the two forms so giver 
off, one at least breeds true at once, but the other may again brea 
up in the succeeding generation. This case is exactly en 
with that of the Andalusian fowl. 
Ar the meeting of the Society on 8rd March, Mr. L. A. Boodle 
exhibited photographic lantern-slides demonstrating the formation 
of secondary wood in certain regions of the stem of Psilotum tri- 
quetrum. In parts of the rhizome iemaiodilite! below the aerial 
= and at the base of the aerial stems themselves, tracheides 
occur, often in considerable numbers, outside the primary wood. 
These external tracheides are found to be still in course of develop- 
ment, as shown by the imperfect lignification of their walls, at a 
7 
radial arrangement. These stems thus exhibit distinct remains . 
cular ti G of the Palmozoic Sph en 
ciel: with which on various groups there is reason to believe the 
Psilotacee to be allied, Mr. = B. Clarke oat an_account of his 
species ; all possessing a trifid style, with a asta spike male in 
the a portion _— — at the bas 
serie a different rhe ee was arrived at; and at the meine 
of the Society on March 17—we quote from the official cireular— 
“the Chairman announced that Mr, William Watson had been duly 
