apical 
Apostaxis 
a’pical, apica’lis (apex, apicis, sum- 
mit), at the point of any structure ; 
~ Axis, in Diatoms, the line through 
the centre of the pervalvar axis in 
the direction of the raphe, at equal 
distances from homologous points 
of the girdle band surfaces, and 
through the apices; ~ Cell, the 
single cell in many plants which 
is the origin of all longitudinal 
growth; ~ Cone=Punctum VEGE- 
TATIONIS ; ~ Growth, extension in 
the length of the axis; ~ Plane, in 
Diatoms, the plane at right angles 
to the valvar plane, which passes 
through the pervalvar and apical 
axes; ¢f.PERVALVAR ~ ; TRANSAPICAL 
~ : apicicircinna’tus + (circinnatus, 
turned round), ending in a circin- 
nate manner; apicil/lary, apicilla’- 
ris, inserted on, or pertaining to the 
summit, as in the dehiscence of the 
capsule of Cerastium. 
Apic’ula, Apic'ulum (Lat. a little 
point), a sharp and short, but not 
stiff point, in which a leaf may 
end; apiculate, apicula’tus, fur- 
nished with an apicula. 
A’pilary (a, without, wi\os, hat), sup- 
pression of the upper lip in such 
flowers as Calceolaria; Aplan’oga- 
metes (r\dvos, wandering, yapérns, 
a spouse), a non-ciliated gamete, 
which may or may not be set free ; 
Aplan’ospores (o7opa, a seed), non- 
motile cells which are detached for 
propagation, formed asexually by 
true cell-formation and rejuvenes- 
cence ; aplas'tic (7Aaords, moulded), 
not convertible into organic tissues. 
aplasmodioph’orus (mdoya, 
moulded, efdos, resemblance, dopéw, 
I bear), used of Myxogastres which 
do not produce plasmodia. 
Aploperist’omi (a)0os, simple, epi, 
around, o7dua, mouth), Mosses hav- 
ing a single row of teeth in the 
peristome, or none; adj. aploperi- 
stom’atous. 
Ap’oblast (dro, up, Brads, a germ), a 
barren shoot, as from pollard wil- 
lows; Ap’ocarp, Apocarp'ium, (xap- 
wos, fruit), a fruit which is apo- 
20 
carp’ous, -pus, that is, when the car- 
pels of a Gynaecium are separate ; 
apocy’tial (xiros, a hollow), multi- 
nucleate and unicellular; Apoc’yty, 
Vuillemin’s term for non-cellular 
tissue in Fungi and Algae, the cells 
being reduced to several nuclei 
within the cell-wall. 
apodog’ynus + (a, without, ois, 
modes, foot yuv7, woman), applied 
to a disk which is not adherent to 
the ovary. 
Apoém’bryony (d70, from, @ufpvor, 
an embryo), the embryo-stage sup- 
pressed, the oosphere giving rise 
immediately to the vascular mem- 
bers; Apog’amy (yduos, marriage), 
abnormal budding and production 
of a bion by a prothallus without 
sexual intervention ; adj. apog’- 
amous ; Apog’eny (yévos, offspring), 
loss of power for sexual reproduc- 
tion, the function of both male and 
female organs being destroyed. 
Apogeot’ropism (do, from, yi, the 
earth, rpor?, a turn), growing away 
from the earth, as normal stems ; 
apogeotrop’ic, negatively geotropic ; 
Apog’yny (yy), woman), loss of 
reproductive power in the female 
organ ; apopet/alous (7éradov, a 
flower leaf), having free petals ; 
polypetalous ; apophyll’ous (gvA)ov, 
leaf) applied to parts of a single 
perianth whorl when free ; Apoph’ 
ysis (g¥w, I grow) (1) the swelling 
below the capsule of Splachnum and 
other Mosses ; (2) also in the cone 
scale of Pinus Pinaster, Soland. ; 
apoph’ysate, possessing such an en- 
largement ; aposep’alous (sepalum, 
calyx-leaf) having free sepals ; 
Aposp’ory (c7opd, seed), suppression 
of spore-formation, the prothallus 
developing direct from the asexual 
generation ; direct ~, is normal but 
prolonged ; induced ~, the prothalli 
produce buds forthwith (Lang) ; 
adj. aposp’orous ; Apost’asis 
(ordovs, standing) the monstrous 
disunion of parts normally united. 
Apostax’is (rdéis, order) the abnormal 
loss of nutritive or secreted fluids 
