Ovellum 
paleolate 
Ovel’lum, Dunal’s term for wu young 
carpel bearing the same relation 
to a mature carpel as an ovule toa 
seed, 
Ovench’yma (ovum, an egg ; éyxuua, 
an infusion), loose tissue of oval- 
shaped cells. 
overhanging, projecting beyond the 
base. 
o’viform, oviform’is (ovum, an egg, 
Jorma, shape), ovoid, egg-shaped ; 
o’void, ovoi’deus (eldos, resem- 
blance), an egg-shaped solid; 
ovoi'dal, having the outline of an 
egg ; ovula’ris (Mod. Lat.) =ovop ; 
ovulate, ovwa’tus, (1) possessing 
ovules ; (2) somewhat ovoid (Hens- 
low); Ov’ule, Ov'ulum, the young 
seed in the ovary, the organ which 
after fertilisation develops into a 
seed ; ~ Tube, a thread-like ex- 
tension of the amnios, rising beyond 
the foramen ; ovuliferous (fero, I 
bear), bearing ovules, adj. ov’ular ; 
O’vum, (1) the ovule; (2) = ZyGorE; 
(3) = OosPHERE. 
oxalic, pertaining to Oxalis, wood 
sorrel; ~ Ac’id, a vegetable acid of 
frequent occurrence; oxalif‘erous 
(fero, I bear), producing oxalic 
acid or its salts; Oxalileu’cite 
(+ LevciTE), Van Tieghem’s name 
for a vacuole which contains oxalic 
acid. 
oxyacan’thous, -thus (dévs, 
dxav0a, a thorn), furnished with 
many thorns or prickles ; oxycar’- 
pus (xapros, fruit), when fruit is 
sharp-pointed ; Oxycel’luloses (+ 
CELLULOSE) constitute the main 
mass of the ground tissue of Phan- 
erogams, and occurs with lignin in 
the walls of wood-cells; Ox’ydases, 
a general term for oxydising 
enzymes (Green). 
Pac’ket-form, the association of bac- 
teria in such colonies as Sarcina. 
pachycar’pus (rays, thick, xapzros, 
fruit), having a thick pericarp ; 
pachyder’mous (d¢pya, skin or hide), 
applied to Mosses when the cells or 
capsules are firm and resistant ; 
179 
sharp, 
pachyphyl’lous (¢vA\ov, a leaf), 
thick leaved ; pachystich’ous 
(a7lxos, a row), thick-sided, applied 
to cells only. 
Pad, (1) a cushion-like growth; cf. 
SUBARCHESPORIAL Pap ; (2) a popu- 
lar name in the United States for 
the floating leaves of water-lilies. 
Pa’gina (Lat., a leaf), the blade or 
surface of a leaf. 
paint’ed, having coloured streaks of 
unequal density. 
paired, conjugated, used of the teeth 
in the peristome of Mosses; Pair- 
ing-cell, an equivalent of GamETr. 
pala’ceous, -cews (pala, a spade or 
shovel, + aceous), when the edges 
of an organ, especially of « leaf, 
adhere to their support. 
palaea’ceous = PALEACEOUS. 
Palaeobot’any (madaws, ancient, 
Bordvy, a herb), fossil botany, 
the study of plants in a fossil 
state; Palaeophytol’ogy (gurov,.a 
plant, Aéyos, discourse), the science 
of palaeobotany. 
palar, pala’ris (Lat., pertaining to a 
pale or stake), when the root is 
perfectly continuous with the 
stem; pala’ri-ramo’sus, when a 
palar root has many branches. 
Palate, Pala’tum (Lat., the palate), 
(1) the prominent lower lip of a 
ringent corolla ; (2) the projection 
in the throat of a personate 
gamopetalous corolla. 
Pale, Pa’lea (Lat., chaff), (1) the 
chaffy scales on the receptacle of 
many Compositae ; (2) the inner 
bract or glume in grasses, called 
“Palet’”’ by North American writers ; 
(3) the ramenta or chaffy scales 
on the stipe of many Ferns; ~ 
clathra'ta, the latticed scale of 
Ferns (Luerssen) ; palea’ceous (+ 
aceous), chaffy, furnished with 
paleae or chaff-like in texture; 
paleaeform'is (forma, shape), re- 
sembling paleae ; Pal’eola, a dim- 
inutive of palea, or of secondary 
order, applied to the LopicuLe of 
grasses; pal’eolate, paleola’tus, 
furnished with a lodicule ; paleo- 
