paroecious 



Pasteurization 



house), in Mosses, having the male 

 and female organs in the same iu- 

 florescence, the male being naked 

 in the axils of the lower bracts; 

 paroi'cous is a synonym. 



Paronychie'tum, an association of 

 plants of Paronychia (Clements). 



Parorthot'ropism {iraph., beside ; opdhs, 

 right ; rpoir^, a turning), Arch- 

 angeli's term when leaves place 

 themselves with the lamina vertical, 

 but not necessarily meridional. 



part'ed, partite, parti'tus (Lat. ), cleft, 

 but not quite to the base. 



Parthemb'ryospenn {irapBivos, virgin, 

 + Embryosperm), C. MacMillan's 

 term for a Parthenosperm, with 

 parthenogenetic embryo, and endo- 

 sperm resulting from fertilization ; 

 Parthenapog'amy (+ Apogamy), the 

 fusion of the nuclei of vegetative 

 cells ; adj. parthenapog'amons ; Par- 

 thend'osperm ( + Endosperm), a 

 plant whose endosperm is partheno- 

 genetic, and embryo the result of 

 fertilization (C. MacMillan) ; Par- 

 thenocar'py [Kap-rrhs, fruit), Noll's 

 term for the production of fruit 

 without true fertilization ; Partheno- 

 gam'ete ( + Gamete), a gamete 

 which develops without pairing 

 (Hartog) ; Parthenog'amy Xyiixosy 

 marriage), the preliminary stage of 

 fertilization exhibited by macro- 

 gamete or macrogametangium, 

 presumably female (Hartmann) ; 

 Parthenogen'esis (ycVeo-Js, origin), 

 a form of apogamy in which the 

 oosphere develops into the normal 

 product of fertilization without a 

 preceding sexual act ; dip'loid ~ = 

 Parthenapogamy ; gen'erative ~ 

 = haploid ^ if the oosphere is pro- 

 vided with the reduced number of 

 chromosomes; somat'ic '-' = Par- 

 thenapogamy ; parthenogenet'ic, 

 arising without fertilization; Par- 

 thenog'eny = Parthenogenesis ; 

 Parthenogonid'ia {yovhs, offspring), 

 reproductive cells in a colony of 

 Volvox Glohator, Linn., acting asex- 

 ually; Parthenomix'is {fii^is, in- 

 tercourse), Winkler's term for Par- 



thenogamy; Par'thenosperm (o-irep- 

 /to, a seed), (1) a body resembling 

 a zygospore, but not resulting from 

 the coalescence of the contents of two 

 sexually different cells; (2) a plant 

 having parthenogenetic embryos (0. 

 MacMillan) ; Par'thenospore (o-iro- 

 pa, a seed), is the same thing. 



par'tial, partia'lis (Lat.), in botany 

 usually means secondary, as -^ In- 

 volu'cre, <-' Ped'uncle, ^ Pet'iole, 

 '~ Um'bel; it is opposed to 

 "general." 



par'tible, partih'ilis (Lat., divisible), 

 ultimately separating, or easily 

 separable. 



par'tim (Lat., partly) ; other ex- 

 pressions are ex parte, pro parte. 



Partit'ion {partitio, a division into 

 parts), (1) a wall or dissepiment ; 



(2) a separated part or segment ; 



(3) the deepest division into which 

 a leaf can be cut without becoming 

 compound (Lindley). 



parti'tus (Lat.) = parted. 

 Par'tridge-wood, oak-wood destroyed 



by Stereum (Tubeuf). 

 partnri'tal [parturio, I bring forth), 



employed by C. A. White for 



SEXUAL. 



parviflor'us (parvus, small ; Jlos, Jloris, 

 a flower), having smaller flowers 

 than in its congeners ; parvifoliate, 

 stem dominant, internodes long, 

 leaves small, as in elm, wallflower, 

 etc. (Worsdell) ; parvifo'lius (folium, 

 a leaf), with smaller leaves than the 

 allied species; Parvocarice'ta, pi. 

 associations of small species of Car ex 

 (Warming) ; par'vus (Lat.), small. 



pas'cnal (pasancm, a pasture), H. C. 

 Watson's term for plants which 

 grow in pastures and gi'assy com- 

 mons, amongst less rank herbage 

 than "pratal"; pas'cuus (Lat.), 

 relating to pastures. 



Pas'sage Cells, cells in the exoderniis 

 or endodermis of roots which retain 

 thiu unaltered walls, by which water 

 can pass. 



Pas'salus (Trd<Taa\os, a peg), a garao- 

 scpalous calyx. 



Pasteuriza'tion, the preservation of 



268 



