Plumule 



OF BOTANICAL TERMS. 



Pollen 



in thistles, which have a row 

 of fine hairs on each side. 



PLtT'MtJLA, see Plumule. 



PLU'MtJLE, the rudimentary stem 

 and leaves between the coty- 

 ledons. 



PLTJRI-, a Latin prefix: more 

 than one. 



PLtJRIFO'LlOu'S, several - flow- 

 ered. 



PLTJRfFO'LlATE, having several 

 leaves. 



PLtJRlFO'LlOLATE, having sev- 

 eral or many leaflets. 



PLtJRlLdC'tJLAR, having more 

 than one cell in an ovary; 

 multilocular. Compare Uni- 

 locular. 



PLu"RLPET'ALOu"S, see Polypet- 



ALOUS. 



PLtJRiSEP TATE, having more 

 than one septum. 



PNEtJ'MATODES, upward 



growths from the roots of 

 palms and some other plants 

 which assist in aeration. The 

 " knees" of the bald cypress 

 were formerly supposed to be 

 of this character. 



P6CtJLIF6RM, deep cup-shaped, 

 with hemispherical base and 

 nearly upright sides. Com- 

 pare Alveolate and Cam- 



PANULATE. 



P6D, any dry dehiscent fruit; 

 capsule. The term pod is the 

 more popular, and is usually 

 restricted in its use, among 

 botanists as well as others, to 

 capsules of considerable size, 

 especially when somewhat 

 rounded or inflated, as in the 

 milkweed (Asclepias). 



P6DE'T!lF6RM, resembling a 

 podetium. 



PODE'TltlM (pi. Pode'tia), a stalk 

 of an apothecium in lichens. 



Also applied to the fruit-stalk 

 in Marchantia. 



PO'DltJM, a support for some 

 other part. The stem, for 

 example, is a podium for the 

 branches. Used mainly in 

 composition. See Monopo- 

 dium and Sympodium. 



P6dOCAR'POUS, having a gyno- 

 phore. 



PdDOCflPH'ALOtJS, said of a head 

 of flowers when supported on 

 a distinct peduncle or pedicel. 



P6D0(rYN'iu'M, see Gynophore. 



POdOP'TEROUS, having winged 

 peduncles. 



POD'OSPERM, see Funiculus. 



POINT'AL, an old term for Pistil. 



POINTLESS, see Muticous. 



POINT'LETflD, see Apiculate. 



PO'LAR B6D"?, see Polar Cell. 



POLAR CELL, a portion of a ga- 

 mete budded off prior to fer- 

 tilization; apoblast; directive 

 corpuscle; polar body; polar 

 globule. Rare in plants. 



PO'LAR CdR'PtfSCLE, a central 

 mass in each aster of a divid- 

 ing nucleus. 



PO'LAR GLdB'ULE, see Polar 

 Cell. 



PO'LAR NtJ'CLEtfS, a fourth nu- 

 cleus in each end of the em- 

 bryo-sac previous to fertiliza- 

 tion. The two polar nuclei 

 unite to form the nucleus of 

 the embryo-sac or "secondary 

 nucleus." 



POLAR'lTlf, the state of having 

 distinct poles; the tendency to 

 assume a direction parallel to 

 the poles of the earth, as the 

 leaves of the compass-plant, 

 Silphium laciniatum. 



P6L'LEN, the fertilizing powder, 

 usually yellow, produced in 

 the anthers of flowers. It 

 consists of unicellular grains 



135 



