Protospore 



OF BOTANICAL TERMS. 



Pseudopodium 



wall, and either associated in 

 a tissue or independent. It is 

 generally at least a nucleus, 

 together with the protoplasm 

 associated with it. Essentially 

 a cell. 



PRO'TOSPORE, any spore which 

 develops a pro-mycelium. Ap- 

 plied by Cook to aecediospores. 

 An unnecessary term. Com- 

 pare Sporidium. 



PROTOTHAi/LUS, see Prothal- 



LUS. 



PROTOXY'LEM, see Proxylem. 



PR0T0Z6PHIL0US, applied to 

 certain water - plants which 

 have the pollen conveyed by 

 minuteanimalscalled protozoa. 



PROTRTJD'lNG, see Exserted. 



PRdX'IMAL, pertaining to the 

 base, or extremity of attach- 

 ment. Compare Distal. 



PROXYLEM, the first-formed 

 xylem in a bundle; protoxy- 

 lem. The term has also been 

 applied to the layer of water- 

 conducting cells destitute of 

 protoplasm around the central 

 strand in the seta of certain 

 mosses. Compare Prophloem. 



PRU'InATE, see Pruinose. 



PRU'fNOSE, covered with a pow- 

 dery bloom, like the fruit of 

 most plums; pruinate. Com- 

 pare Glaucous, Hoary, and 

 Canescent. 



PRU'INOUS, see Pruinose. 



PRU'NIFdRM, plum-shaped. 



PRU'RiENT, stinging, as the 

 hairs of nettle. 



PSEUDAX'Is, see Sympodium. 



PSEUDO-, a prefix derived from 

 the Greek signifying false or 

 spurious. 



PSEU'DO-BULB, see Corm. Es- 

 pecially the corm or fleshy hase 



143 



of the stem in many epiphytic 

 orchids. 



PSEU'DO-BULBfL, an outgrowth 

 which sometimes replaces the 

 ordinary sporangia in ferns 

 and bears antheridia and ar- 

 chegouia. 



PSEU'DOcARP, any fruit which 

 is not derived exclusively from 

 a single ovary without acces- 

 sory parts. The fruits of the 

 apple, rose, mulberry, and 

 juniper are pseudocarps. 



PSEUDOCOS'TATE, said of a leaf 

 in which the veins unite to 

 form an outer vein parallel to 

 the margin, as in Eucalyptus. 



PSEUD0-6e'NUS, see Form-ge- 

 nus. 



PSEUDOGY'RATE, sometimes ap- 

 plied to the aunulus in ferns 

 when it crowns the sporan- 

 gium, as in the Schizaeaceaj. 

 Compare Pleurogyrate. 



PSEUD OM6NOC6TYL£d'ONOUS, 



having two or more consoli- 

 dated cotyledons. (Obs.) 



PSEUDO-PAR AslTE, see Epi- 

 phyte and Saprophyte. 



PSEUDO-PARENCHYMA, a term 

 applied by De Bary to tissue in 

 fungi which is formed by in- 

 terlacing and united hyphse. 



PSEUDOPERlTHE glUM, a false 

 perithecium. 



PSEUDO-PIN'NATE, having leaf- 

 lets (or rather segments) which 

 are not articulated or petioled 

 at their base; pinnatisect. 



PSEUDOPODIUM (pi. Pseudopo'- 

 dia), (1) a stipe or stem of un- 

 usual origin, as the leafless 

 upper portion of the stem 

 which supports the capsule 

 in Sphagnum (instead of the 

 true seta which remains unde- 

 veloped; (2) one of the tem- 



