Phyllobiology 
(SUPPLEMENT) 
Plasm-sao 
a constituent of the pigment Puy- 
COCHROME (Gaidukovy), 
Phyllobiol’ogy (+ BroLoey), the bi- 
ology of the leaf, in its widest 
sense ; adj. phyllobiolog’ic ; Phyl- 
loclad’ium, add, (2) a thalline out- 
growth of a Lichen (Lindsay); Phyl’- 
lophyte (pvAXov, leaf), a plant pos- 
sessing leaves or leaf-like organs 
(Hansgirg); phyllop’odous, used 
of the genus Hieraciwm when the 
radical leaves are in full vigour at 
the period of flowering ; phyllo- 
siphon‘ic (+SIPHONIC), the tubular 
central cylinder of the higher 
plants, where leaf-gaps are con- 
stantly present (Jeffrey); the 
condition in Phyllosi’phony ; Phyl’- 
lotype (rvmos, a type), a type of 
leaf; Phyl/lula, H. Gibson’s term 
for that stage in the embryo of 
vascular plants at which the first 
leaf and root appear (Parker) ; 
Phyl'lule, used for the free portion 
of the pulvinus, in Pinus (Mas- 
tors). 
Phy’teris (pis, strife), plant migra- 
tion and competition (Clements) ; 
Phy’to-al’bumin, see ALBUMIN ; 
Phytoben’thon (f¢vdos, depth), vege- 
tation of the depths (Forel) ; 
Phytog’amy (yduos, marriage), 
eross-fertilization of flowers (A. 
Gray); Phy’togen (yévos, race), 
a vital centre (Fermond) ; 
Phytogeogen’esis (yf, the 
earth, -yéveo.s, beginning), the 
origin of plants in geologic time 
(Kuntze); Phytogeog’rapher 
(ypdgw, I wrote,) an expert on 
plant-distribution ; Phytogonid’ium 
(+GonIDIUM) ; an immobile goni- 
dium, capable of independent 
germination (A. Braun); Phyto- 
lithol’ogy, (2) the science of plant 
distribution as affected by soil or 
rock ; Phyto’ma, pl. Phyto’mata, 
the vegetative body or substance 
of all plants (A. Braun) ; Phytom’- 
etry (uéTpov, a measure or stan- 
dard), acomparison between plants, 
or the different plans of their 
growth; Phytomorpho’sis (udpgwois, 
347 
a shaping), any change induced by 
plants; by Appel used for galls 
caused by plant parasites; Phy- 
ton’omy, (2) study of the organs of 
plants ; cf. Puytotomy (Heinig) ; 
Phytopalaeontol’ogist = PALaro- 
BOTANIST; Phytoplew’ston (+ PLEu- 
sTON), plants which are lighter than 
the surrounding water, and con- 
sequently float on the surface ; 
Phy’ tostrotes(trisyll.]. Phytostro’tae 
(crpwros, spread), distributed as 
surface plankton (Clements). 
Picnid‘ium = Pycnipium. 
Pi'leola, add, (4) the plumule in 
grasses (Van Tieghem). 
pisa’ceus (pisum, pea), pea-green, the 
colour of the unripe seeds (Hayne). 
Place-con’stant, an invariable factor 
of plant-life in a given locality ; 
~-condit’ion, or ~-habit, the sum 
- of these under varying conditions ; 
~-mode, the prevalent condition 
of size, number, colour, etc., of 
organs of a plant in a given locality 
(Shull). 
placen’tary, relating to the placenta ; 
Placen’toid (eldos, resemblance), 
organs described by Chatin as oc- 
curring in the anthers of certain 
Dicotyledons to assist in the dis- 
persion of pollen. 
Plac’oplast (7\acrds, moulded), elaio- 
plasts attached to the inner surface 
of the margin of the chromophores 
in certain Diatoms (Meresch- 
kowsky). 
Plad’oboles [trisyll.],  Pladob’olae 
(“aAddos, moisture, -BoAls, thrown’), 
plants distributed by the action of 
damp (Clements). 
Plank’tophyte (dvurov, a plant), a plant 
forming an integral part of the 
plankton (Forel). 
Plant-plankton (+ PLANKTON), the 
same as PHYTOPLANKTON ; Plant’- 
ling, a small plant, a product of 
recent germination (8. Moore). 
Plasmatogennyl'icae (yervdw, I beget, 
byn, = materia), Radlkofer’s term 
for Angiosperms and Gymno- 
sperms; Plasm-sac (+ Sac) of 
Diatoms, a colourless layer of pro- 
