Parallel Nerved OF BOTANICAL TERMS. 



Paratonic 



PARALLEL NERVED, see Par- 

 allel Veined. 



PARALLEL VEINED, having the 

 veins or the principal ones par- 

 allel, or merely diverging: op- 

 posed to Reticulate veined and 

 characteristic of the veins (or 

 nerves) of endogens. In some 

 exogeus, however, as the beech, 

 the principal lateral veins are 

 parallel, but in exogens the 

 term parallel veined is not ap- 

 plied, the condition being ex- 

 pressed in examples like this 

 by the special term pinnately 

 veined. 



PArAmI'TOM, a name given by 

 Flemming to the more fluid 

 portion of the cell-substance 

 which is contained in the 

 meshes of the mitom or net- 

 work of threads. It is the 

 paraplasma of Kupffer. 



PARANE'MAtA (sing. Parane'- 

 ma), paraphyses among the 

 spores of Fucus and other 

 algae. (Obs.) See Paraph- 

 yses. 



PARANUCLE'OLtJS (pi Paraml- 

 cle'611), one of the additional or 

 secondary nucleoli in a nu- 

 cleus, when there are more 

 than one. 



PARANtJ'CLEtJS (pi. Paranu'clei), 

 an object resembling an addi- 

 tional nucleus — generally ad- 

 joining the true nucleus and 

 in some cases budded off from 

 it; lateral nucleus. 



PARAPETALOtJS, standing by 

 the side of a petal, as stamens 

 in some Ro&icese. 



PARAPHYL'Lu"M (pi. Paraphyl'- 

 la), a foliaceous expansion 

 which is not a true leaf, as 

 the large stipules of the pea. 

 Especially one of the leaf-like 

 scaly hairs among the true 

 leaves in mosses. 



PARAPH'YSE§ (sing. Paraphasia), 

 sterile filaments among repro- 

 ductive bodies of various kinds, 

 as those among the archegonia 

 and antheridia in certain moss- 

 es, among the asci in Ascomy- 

 cetes, and among the basidia 

 in Basidiomycetes. 



PARASITE, a plant which grows 

 upon or within another living 

 body, from which it derives a 

 part or the whole of its nour- 

 ishment. Compare Sapro- 

 phyte. 



PARASITE - SAP'ROPHYTE, a 



parasite which kills its host, 

 then continues to feed upon it. 



PARASfT'IC CASTRATION, ster- 

 ility of a reproductive organ 

 caused by a parasite. 



PARAslTlgED, affected by a par- 

 asite; haviug a parasite grow- 

 ing upon or within it. 



PAR'ASITI§M, the condition of 

 being a parasite. 



PArAstA'MJ&N, see Stamino- 

 ditjm. 



PARASTE'MdN, see Stamino- 

 dium. 



PARAS'TI€HY, a whorl, or spiral 

 row of organs. Compare Or- 

 thostichy. 



PArASTYLE, an abortive style. 



PARATdN'lC, depressing or re- 

 tarding: opposed to stimu- 

 lating. Applied mainly to 

 certain spontaneous move- 

 ments of plants, such as the 

 "sleep" of leaves, induced by 

 the withdrawal of the usual 

 stimulus, in distinction from 

 movements caused by mechan- 

 ical or artificial irritation. 

 Sometimes applied to all 

 movements of organs which 

 are produced by the presence 

 or absence of external stimuli. 

 The term is also applied to the 

 condition of plants when unu- 



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