Polymorphous 



A DICTIONARY Positive Geotropism 



op Generations, and Het- 



eiuecism. 

 POLYMdR'PHOu'S, existing under 



different forms. See above. 



Also having numerous more 



or less definite sub-types under 



a given type. 

 P6LYPET'ALOu"S, having distinct 



petals (opposed to Gamopet- 



alous); apopetalous; dialypet- 



alous; eleutheropetalous; cho- 



ripetalous. 



PdL'YPHORE, a common recep- 

 tacle for many distinct carpels, 

 as that of the strawberry. 



POLYPH'YLLOu"S, see Polysep- 



ALOUS. 



PflL'YPHYLLY, an increase in 



the usual number of floral 



organs in a whorl. Compare 



Pleiophylly. 

 PdLYRHI'ZAL, many-rooted. 

 PdLYSEP'ALOtTS, of two or more 



distinct sepals; aposepalous; 



apophyllous. Compare Poly- 



petalous. 

 PdLYSl'PHONOtJS, said of the 



thallus in Floridese when it 



consists of several parallel 



rows or filaments of cells. 

 POLYSPER'MOu'S, containing 



many seeds. Compare Pleio- 



spermoub. 

 P6I/YSPERMY, the fertilization 



of a female cell by more than 



one male ceil. 

 PdL'YSPORE, see Compound 



Spore. 

 P6LYSP0'R0u"S, containing many 



spores. 

 POLYS' TA€HOu"S, having many 



spikes. 

 P6LYSTEM ONOUS, having many 



more stamens than petals. 



Compare Isostemonous and 



POLYANDROUS. 



PdLYSYMMET'RlCAL, capable of 

 division into two symmetrical 



or equal halves in more than 

 one direction; actinomorphous. 

 PdLYTHAL'MIC, derived from 

 more than one flower, as a 

 collective fruit. Compare 



MONOTHALMIC. 



POLYT'OMOtJS, having the blade 

 of a leaf distinctly divided into 

 many subordinate parts, but 

 not compound; having the 

 stem forked or divided into 

 many coordinate parts. 



POLYT'RfOHOu'S, bearing nume- 

 rous hairs. 



P6LYZYG0'SlS,the conjugation of 

 more than two cells (gametes). 



POMA'CJEOu'S, having the appear- 

 ance or nature of an apple. 



POME, an indehiscent fruit of 

 more than one carpel, with 

 the seeds enclosed in horny or 

 parchment-like endocarps, and 

 an adnate fleshy calyx, as in 

 the apple. 



POMlF'EROu'S, pome-bearing. 



PdM'iFdRM, apple-shaped. 



POMdL'OGY, the department of 

 horticulture which relates to 

 fruits. See Fruit. Compare 

 Carpology. 



P6RE, a small circular opening. 



PORE-CANAL', the passage 

 through a bordered or other 

 pit between adjoining cells. 



PORE-CAP'SULE, one from which 

 the seeds or spores escape by a 

 pore or pores. 



POREN'€HYMA (obs.), see 

 Pitted Tissue. 



PO'ROSE, pierced with many 

 small circular openings. 



PdRRECT', directed outward or 

 forward; outstretched. Com- 

 pare Arrect. 



PdR'RET, see Scallion. 



P6§'lTlVE GE6T'R0Pl§M, grow- 

 ing toward the centre of the 

 earth — usually called simply 



138 



