Plasmodiation 
(ADDITIONS) 
pseudopodal 
fluid albuminous substance of the 
cell-body (Strasburger); Plasmo- 
dia’tion, the assumed softening of 
the outline of a spore on its ger- 
minating (A. 8. Wilson) ; Plasmo- 
dier’esis (d:aipecrs, division), the 
division of protoplasm, which may 
be (a) akinetic, or (6) karyo- 
kinetic ; plas’tic Prod’ucts of kata- 
bolism, those which remain an 
rel part of the organism 
(Parker). 
pleophylet’ic (m\éov, more, vd, 
a tribe), descended from numerous 
lines, polyphyletic. 
pleurococ’coid (eldos, resemblance, 
like the genus Plewrococcus. 
Plug, a growth of protoplasm which 
closes the pore-openings in the 
cells of certain Algae, homologous 
with the SroprEeR of Ballia (H. 
Gibson). 
pluriv’orous (voro, I devour), Dietel’s 
term for those Fungi which in- 
habit indifferently hosts belong- 
ing to widely different orders of 
plants. 
Pneumatho’dium, (1)cf, PNEUMATODE; 
(2) an A&RATING Root, as in 
Taxodium. 
Pock’et, of Zemna, a hollow in the 
leaf, whence a new leaf arises 
(Potter). 
Pol'linide, a single antheridial cor- 
puscle (Sirodot). 
Polyan’dry, the state of having many 
stamens; pol’yarch (dpxyi, begin- 
ning), when a stele possesses many 
protoxylem groups; polycorm’ic 
(kopuos, a trunk), expressive of 
such trees as the fastigiate Irish 
yew, which has a number of erect 
radial axes (A. H. Burtt). 
polygona’ceous, allied to, or resem- 
bling the genus Polygonum. 
polyplas’tic, applied to septate 
spores ; Pol’yplast, add, (2) the 
multicellular stage of the embryo 
before the differentiation of cell- 
layers or organs in Mosses, Ferns, 
etc. (Parker); adj. polyplas’tic, 
see also POLYBLASTIC; pol’yspored 
= POLYSPOROUS. 
Pos'teriform (posterus, last, + FoRM), 
the late derivative of an ancestral 
form (Kuntze). 
Potamoplank’ton (orayues, a river, 
+ PLANKTON), the floating vegeta- 
tion of inland waters. 
Prae’‘form (+ Form), an early form, 
the original ancestral strain 
(Kuntze). 
prismat‘ic Lay’er, Farmer’s term for 
a layer of cells in Jsoétes sur- 
rounding the xylem cylinder 
(Campbell). 
Prochro’matin (+ CHROMATIN), the 
substance of nucleoli (Pfitzner) ; 
Progemma'tion (+ GEMMATION), 
when stylospores are given off 
from basidia, new terminal cells 
being developed from older or 
basal cells (Nylander). 
prolific Cells, reproductive cells 
(Wittrock) ; prolifi'ed, grown out 
into prolification, as a tuft of 
leaves from a cone. 
promyce’lial, relating to a promy- 
celium, 
Prothallogams, Prothallogam’ia 
(yduos, marriage), vascular Crypt- 
ogams ; prothal’line, pertaining 
to a prothallus, or resembling 
one. 
protoplas’‘tic, used by Henfrey for 
PROTOPLASMIC. 
prop’er Valves = SPATHE-VALVEs. 
Protogonid’ium (+ GonipIum), the 
first generation of a succession of 
gonidia (A. Braun); Pro’totype 
(rurros, a type), the assumed ances- 
tral form, from which the descend- 
ants have become modified ; adj. 
prototyp’ic. 
pseu'do-adven’tive (+ ADVENTIVE) 
Buds, young branches of Lycopods 
which have been arrested at a very 
early stage (Bruchmann); Pseudo- 
chro’matin (+ CHROMATIN) = PRo- 
CHROMATIN ; Pseu’do-gen’us ( + 
Genus), Lindsay’s term for a 
ForM-GENUS; a condition, not an 
independent genus ;  pseu’do- 
parenchy’matous, possessing sym- 
phyogenetic cellular tissue ; 
pseudop’odal (mots, od0s, a 
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