pectiniferous 
(SUPPLEMENT) 
Petrifaction 
pectinif’erous (feo, I bear), used of 
a characteristic brown coating of 
the spores of Albugo, PEorTINn being 
its constituent (F, L. Stevens). 
Pedalin’eous, allied to the order 
Pedalineae. 
pedioph’ilus (redlov, level country, 
préw, [ love), dwelling in uplands ; 
Pediophy’ta (gurdv, a plant), up- 
land plants; Pediophy’tia, upland 
plant formations (Clements). 
Pelag’ium (7éAayos, the sea), a sur- 
face sea-formation; pelagoph’ilus 
(préw, I love), living at the sea 
surface ; Pelagophy’ta (durov, a 
plant), surface sea plants (Cle- 
ments). 
pellic’ulose (pellicula, a little skin), 
furnished with a skin (Stevenson). 
Peloch’thium (8x@7, a bank), a mud 
bank formation ; pelochthoph’ilus 
(piréw, I love), living on mud 
banks; Pelochthophy’ta (purov, a 
plant), plants of mud _ banks; 
Pelochthophy tia, plant formations 
of mud-dwelling species (Cle- 
ments); Pelogen’ety (yévos, off- 
spring), amount of clay in soil, as 
affecting the plants growing on it; 
Pel‘ophile (g:Aew, I love), a clay- 
loving plant; peloph’ilous, occur- 
ring on clayey soils. 
pelo’ric, relating 
(Potter), 
pentaphylet’ic (pv\7, a tribe), used 
of hybrids which are composed of 
five strains, five species or forms 
being represented in the hybrid ; 
Pentacot’yl, a seedling with cotyle- 
dons so divided as to appear to 
possess five seed-leaves (De Vries). 
Perem’bryo (+ EmsBryo), the portion 
of a monocotyledonous seedling 
which invests the plumule and 
radicle (Heinig). 
Perenna’tion, lasting, perennial. 
Per‘iachene (+ ACHENE), a term in- 
cluding EpracHEne, for an Achene 
arising from a partially superior 
flower (Villari) ; perian’thial, re- 
lating to the PrrianTu ** Per’i- 
blast (B\acrds, a bud), a misprint 
for PeERirLast;  Pericau’lome 
to PELoRIA 
345 
(kavdds, stalk), the outer portion 
of the stem, including the leaf- 
trace bundles, derived theoretically 
from the fused bases of the leaves 
(Potonié); perichy’lous (xvdds, 
juice), employed of the aqueous 
tissue when between the epidermis 
and chlorenchyma (A. Schimper) ; 
Pericline = PERICLINIUM ; _ peri- 
cyclic Sec’tors, interruptions of 
the pericycle of the root in cer- 
tain Mosses, by tissues of cells 
whose walls are very slightly 
thickened (Campbell);  Perl- 
gam'‘ium (yéuos, marriage), the 
ttion of the fertile reduced 
ranchlets of Mosses, which contain 
the archegonia; perlhadromat’ic 
(+ Hapromg), surrounding the 
hadrome ;_ perileptomatic (+ 
Lertome), surrounding the lep- 
tome; perimicrop’ylar (+ Muicro- 
PYLE), situated near or round the 
micropyle. 
Per‘iod, la'tent, see Latent Perron. 
periph’eral steles, four long curved 
steles in Psaronius from which ad- 
ventitious roots take their origin 
(Zeiller); Per’iphyses, pl. (vais, 
growth), hairs of like origin to 
Parapuyses but arising from the 
hymenium of Ascomycetes at places 
destitute of asci (Bennett and 
Murray) ; Per‘ispore (+ SPoRE), an 
incrustation containing much silica, 
outside the exospore of Isoétes 
(Fitting); Perisporin‘ium, the 
outermost membrane of pollen in 
Angiosperms (Fitting) ; perit’rich- 
ous (Oplé, rplxos, a hair), the whole 
surface beset with cilia (Jones). 
peronocar’pic, where occurring, pro- 
bably a misprint for PYRENOCARPIC. 
Pet’als (2), of the Hop, the scales of 
the strobile; Pet’aly, the condition 
of possessing petals (J. M. Coulter), 
Pet/asospores, -ae (meragos, a broad 
brimmed hat, + Sprorr), plants 
having seeds with parachute- 
like appendages (Clements). 
pet‘iolans (Lat.), producing petioles ; 
used by Dr Burchell. 
Petrifac’tion, (petra, rock, facio, I 
