parthenogenetic 
(ADDITIONS) 
Plasmochym 
parthenogenet’ic, arising without fer- 
tilization. 
Path-point’ers, defensive protec- 
tion, such as prickles, etc., 
against undesirable insect-visitors 
(Kerner). 
Pauper’culae, pl. (pauperculus, very 
poor), depauperate generations, as 
the dwarf-males of Oedogonium, 
etc. (A. Braun). 
Pec’tines, pl. (pecten, a comb), fim- 
briae on the corolla of some Gen- 
tians, constituting the corona 
(Huxley). 
pelo’ric, relating to §PELORIA 
(Potter). 
pentaphylet’ic (¢vA7, a tribe), used 
of hybrids which are composed 
of five strains, five species or 
forms being represented in the 
hybrid. 
perian’thial, relating tothe PERIANTH ; 
pericy’clic Sectors, interruptions of 
the pericycle of the root in certain 
Mosses, by tissues of cells whose 
walls are very slightly thickened 
(Campbell); perihadromat’ic (+ 
Hapromg), surrounding the had- 
rome. 
peronocar’pic, probably a misprint 
for PYRENOCARPIC. 
Pet/aly, the condition of possessing 
petals (J. M. Coulter). 
phaenobio’tic (Bios, life), Kuntze’s 
term for that geologic period 
when plants made their appear- 
ance as evidenced by their fossil 
remains. 
Phanerog’amy, the condition of PHa- 
NEROGAMS. 
Pharmacogno’sy (¢dpuaxov, a drug, 
yrao.s, knowledge), the know- 
ledge of the distinctive features 
of vegetable drugs (E. M. 
Holmes). 
phe’nicine, phenic’eous (Heinig) = 
PHOENICEOUS. 
Phioém-parench’yma, cf. BastT-PAREN- 
CHYMA. 
photoph'ilous (giAéw, I love), C. 
Schimper’s term for sun-loving 
plants ; photoph’ygous  (¢vyij, 
flight) ; applied to shade plants. 
316 
Phrag’matospore (c7opd, w seed), a 
multicellular spore, capable of 
germinating from more than one 
point (A. Braun). 
phycochroma’ceous (xpwya, colour, 
+ aceous), applied to gonidia 
which are not green (chlorophyl- 
laceous) ; Phy’cochrome, the bluish- 
green colouring matter of Algae 
(Bornet) ; Phycophy’ta (gurov, a 
plant), Trevisan’s name for Chara- 
ceae. 
Phylloclad’ium, add, (2) the thalline 
scale of a Lichen (Lindsay); Phyl’- 
lula, H. Gibson’s term for that 
stage in the embryo of vascular 
plants at which the first leaf and 
root appear (Parker). 
Phy’to-al’bumin, see ALBUMIN ; Phy- 
tog’amy (yduos, marriage), cross- 
fertilization of flowers (A. Gray); 
Phytogeogen’esis (yf, the earth, 
yéveois, beginning), the origin of 
plants in geologic time (Kuntze) ; 
Phytogonid’ium,(-+GoNnIDIUM) ; an 
immobile gonidium, capable of inde- 
pendent germination (A. Braun) ; 
Phy’toma, pl. Phytom’ata, the 
vegetative body or substance of all 
plants (A. Braun); Phytom’etry, 
(uérpov, a measure or standard), a 
comparison between plants, or the 
different plans of their growth ; 
Phytomorph’osis (uépdwors, a shap- 
ing), any change induced by plants; 
by Appel used for galls caused by 
plant parasites; Phytopalaeonto- 
Yogist = PALABOBOTANIST. 
Picnid’‘ium = PycnipIuM. 
Pi'leola, add, (4) the plumule in 
grasses (Van Tieghem). 
placen’tary, relating to the placenta. 
Plant-plankton (+ Puanxton), the 
same as PHYTOPLANKTON ; Plant’- 
ling, a small plant, a product 
of recent germination (8. 
Moore). 
Plasm-sac (+ Sac) of Diatoms, a 
colourless layer of protoplasm 
forming a lining to the frustule 
and enclosing the cell- contents 
(O’Meara); Plas’mochym (xvyua, 
that which is poured), the thick 
