prosoplastic 



(SUPPLEMENT) 



Pseudocleistogamy 



logic tissues caused by parasi f es 

 as in galls (Trotter) ; adj. proao- 

 plast'ic; Prososmotax'is ( + OSMO- 

 TAXIS), movement of motile 

 organisms in consequence of the 

 influence of fluids ; Prosphototax'is 

 ( + PHOTOTAXIS), definite arrange- 

 ment as the result of the action 

 of light on organisms capable of 

 response ; Prosthermotax'is ( + 

 TH.ERMOTAXIS), movement towards 

 warmth of bacteria or zoospores ; 

 Prosthigmotax'is = THIGMOTAXIS. 



Pro'teid-Vac'uoles, nuclei of cells of 

 the tapetal layer in Gymnosperms 

 (Chamberlain) ; Proteol'ysis (\tf<rts. 

 a loosing), the breaking up of pro- 

 teida by enzymes ; Proteosynthe'sis 

 (fftvdetris, composition), building up 

 proteids. 



Prothal'l ogams, Prothallogam'ia 

 (yd/JLos, marriage), vascular Crypt- 

 ogams ; prothal'lial-cells, usually 

 two in Cycads, the second of which 

 gives rise to the antherkiial cell ; 

 prothal'line, prothal'loid (elSos, 

 resemblance), pertaining to a pro- 

 thallus, or resembling one. 



Frptochro'mosome ( + CHROMOSOME) 

 in Hygrocybe, a variable number of 

 chromatophile granulations which 

 at the end of the prophase, unite 

 into two chromosomes (Maire) ; 

 Prptodoch'ae (Soxy, reception), 

 primary successions of plants 

 (Clements) ; Protog'amy (ydfjios, 

 marriage), when gametes combine 

 without fusion of the nuclei 

 (Dangeird) ; Protogonid'ium ( + 

 GONIDIUM), the first generation of 

 a succession of gonidia (A. Braun) ; 

 Protohad'rome ( + HADROME), 

 primary xylem. 



Protomyce'lium ( + MYCELIUM), 

 Eriksson's term for a plasmic 

 mass formed between the cells of 

 parasitic fungi as mycelial fila- 

 ments or in the intercellular 

 spaces ; Pro'toneme = PROTONEMA. 



Protophy'tia (<f>vrbv, a plant), applied 

 by Clements to initial stages of 

 succession in plant growths. 



protoplas'tic, used by Henfrey for 



PROTOPLASMIC ; Protopteridophy'ta 

 ( + PTERIDOPHYTA), a hypothetic 



Erimitive group of Pteridophytes, 

 om which the known orders may 

 be supposed to have been derived 

 (Bower). 



Pro'tostele ( + STELE) supposed primi- 

 tive in structure, and has been 

 applied to HAPLO- and ACTINO- 

 STELES (Brebner) ; adj. protoste'lic. 



prototropn'ic (TpoQr), food), requiring 

 BO organic compounds for nourish- 

 ment (Jones) ; Prototroph/ism is 

 the state itself ; Prototype (nj-rros, 

 a type), the assumed ancestral 

 form, from which the descendants 

 have become modified ; adj. 

 prototyp'ic. 



pruni'nus (Mod. Lat., from prunum, 

 a plum), plum-colour (Hayne). 



Psamath'ium (\f/6.^a6os, sea sand), a 

 strand formation ; psamathoph'ilus 

 (0t\&>, I love), strand-loving ; 

 Psamophy'ta (0i-roV, a plant), 

 strand-plants (Clements). 



Psammogen'ity (7^05, offspring), 

 amouut of sand in the soil, as 

 affecting the plants growing 

 thereon; Psam'mophile (<t\<?w, I 

 love), a plant affecting light sandy 

 soils (F. A. Lees) ; Psam'mophyte 

 ((pvrbv, a plant), a sand-plant, 

 confined to sandy habitats, as 

 dunes ; Psammophy'tia, used by 

 Clements for sand or sandstone 

 plant formations. 



pseu'do-adven'tive ( + ADVENTIVE) 

 Buds, young branches of Lycopods 

 which have been arrested at a very 

 early stage (Bruchmann) ; pseudo- 

 autoi'cous( + AUTOicous), a dioicous 

 moss when occasionally autoicous ; 

 Pseu'do-buTbil, (2) a structure 

 replacing a sporangium in apospory 

 of certain ferns ; pseu'do-cal- 

 ca'reous, used by F. A. Lees for 

 p'ants growing on clay-slate, etc. ; 

 Pseudocamb'ium (+ CAMBIUM), 

 Williamson's term for a meriste- 

 matic tissue resembling cambium ; 

 Pseudocnro'matin ( + CHROMATIN ) 

 = PROCHROMATIN ; Pseudocleistog'- 

 amy (+ CLEISTOGAMY), when 



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