

Ovellum 



Ovel'lum, Dunal's term for a young 

 carpel bearing the same relation 

 to a mature carpel as an ovule to a 

 seed. 



Ovencn'yma (ovum, an egg ; e'7%^a, 

 an infusion), loose tissue of oval- 

 shaped cells. 



overhang'ing, projecting beyond the 

 base. 



o'viform, oriform'is (ovum, an egg, 

 forma, 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. ) = OVOID ; 

 ov'ulate, ovula'tus, (I) possessing 

 ovules ; (2) somewhat ovoid (Hens- 

 low) ; Ov'ule, Ov'ufum, 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 ; ovulif erous (fero, I 

 bear), bearing ovules, adj. ov'ular ; 

 O'vum, (1) the ovule; (2) = ZVGOTE; 

 (3) = OOSPHEKE. 



oxalic, pertaining to Gxalis, wood 

 sorrel ; ~ Ac'id, a vegetable acid of 

 frequent occurrence ; oxalif erous 

 (fero, I bear), producing oxalic 

 acid or its salts ; Oxalileu'cite 

 ( + LEUCITE), Van Tieghem's name 

 for a vacuole which contains oxalic 

 acid. 



oxyacan'tnous, -thus (6&s, sharp, 

 a.Ka.v6a, a thorn), furnished with 

 many thorns or prickles ; oxycar'- 

 pus (napTros, fruit), when fruit is 

 sharp-pointed ; Oxycel'luloses ( + 

 CELLULOSE) constitute the mam 

 mass of the ground tissue of Phan- 

 erogams, and occurs with lignin in 

 the wails 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. 



paciiycai'pus (iraxvs, thick, nap-ros, 

 fruit), having a thick pericarp ; 

 paeliyder'mous(Se'/JM a ! skin or hide), 

 applied to Mosses when the cells or 

 capsules are firm and resistant ; 



paleolate 



pachyphyl'lous (QuXXov, a leaf), 

 thick - leaved ; pachystich'ous 

 (tm'xos, a row), thick-sided, applied 

 to cells only. 



Pad, ( 1 ) a cushion-like growth ; cf. 

 SUBARCHESPORIAL PAD ; (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 GAMETE. 



pala'ceous, -ceus (pala, a spade or 

 shovel, + aceous), when the edges 

 of an organ, especially of a leaf, 

 adhere to their support. 



palaea'ceous = PALEACEOUS. 



Palaeobot'any (iraXaios, ancient, 

 fioravr], a herb), fossil botany, 

 the study of plants in a fossil 

 state; Palaeophytol'ogy (tfjvrov, a 

 plant, Xoyos, discourse), the science 

 of palaeobotany. 



pa'lar, 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. 



Pal'ate, Pala' turn (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 

 "Palef'bj North American writers ; 

 (3) the ramenta or chaffy scales 

 on the stipe of many Ferns ; ~ 

 dathra'ta, the latticed scale of 

 Ferns (Luerssen) ; palea'ceous ( + 

 aceous), chaffy, furnished with 

 pale ie 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 LODICULE of 

 grasses ; pal'eolate, paleola'tus, 

 furnished with a lodicule ; paleo- 



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