protandrous 



Protoepiphyte 



protan'drous (Tr/xSros, first, 



avdpos, a man), the anthers mature 

 before the pistils in the same 

 flower ; Protan'dry, the androecium 

 ripening before the gynaecium, the 

 pollen being dispersed before the 

 pistils are receptive. 



protea'ceous, relating to or resembling 

 the order Proteaceae. 



Protective Sheath. = ENDODEBMIS. 



Pro'teid, (1) a group of albuminoids, 

 more or less resembling albumen ; 

 with water, the group of proteids 

 constitute the bulk of protoplasm ; 

 (2) used also for -~ Gran'ule or ^ 

 Plas'tid ; ~ Ba'sis, that portion of 

 protoplasm which is not composed 

 of granules, it is sometimes absent ; 

 ~Crys'tal= CRYSTALLOID ; ~Gran'- 

 ules, reserve materials, or aleurone 

 granules ; Pro'tein, a group of 

 complex nitrogenous substances, 

 as NUCLEIN, etc.; adj. pro'teinic; 

 ~ Crys'tal= CRYSTALLOID; '-Grain 

 = ALEURONE GRAIN ; proteina'ceous 

 ( +aceous), pertaining to protein, or 

 composed of it. 



Pro'ten (Sachs) = PROTENCHYMA. 



Protench'yma (irpuros, first, eyxyna, 

 an infusion), fundamental or ground 

 tissue ; Protene'ma = PROTONEMA, 

 the filamentous embryo in Mosses. 



Proteohydrorysis (PROTEID + HYDRO- 

 LYSIS), the decomposition of 

 proteids by hydrolysis ; adj. 

 proteohydrolyt'ic ; proteolyt'ic 

 (Xtf<m, a loosing), decomposing 

 proteids ; <~ En'zyme, an unorgan- 

 ised ferment which is the active 

 cause in breaking up proteids ; 

 Pro'teose, a soluble albuminoid 

 found in gluten ; Pro'teosomes 

 (o-w/ta, a body), granular precipita- 

 tions in the cells caused by the 

 action of certain alkaloids, as 

 caffeine. 



proteran'drous (irpbrepos, first, dvrjp, 

 avdos, a man), the anthers ripe 

 before the pistils in the same 

 flower ; protandrous, one kind of 

 dichogamy (Delpino) ; Proteran'- 

 dry, the condition described ; 

 proteran'thous, -thus (&v6os, a 



flower), where flowering precedes 

 leafing, hysteranthous ; proterog'- 

 ynous, -nus (ywr), a woman), when 

 the pistils are receptive before 

 the anthers have ripe pollen (Del- 

 pino) ; Proterog' yny, the state de- 

 scribed ; proteropet'alous (TreraXoi', 

 a flower-leaf), the state of obdiplo- 

 stemonous flowers, when the epi- 

 petalous whorl of stamens is the 

 inner (Schumann) ; proterosep'alous 

 (+ SEPALUM), as above, when the 

 whorl in question is the outer. 



Prothalla'tae (TT/DO, for, 0aXXos, a 

 sprout), Haeckel's term for Mosses 

 and vascular Cryptogams ; pro- 

 thariiform (forma, shape), re- 

 sembling a prothallus ; Prothal'- 

 lium, pi. Prothal'lia, Prothal'lus, 

 a thalloid oophyte or its homo- 

 logue resulting from the germina- 

 tion of a spore, usually a flattened 

 leafy expansion and bearing sexual 

 organs ; Prothallogam'ia (yd/tos, 

 marriage), Camel's term for the 

 vascular Cryptogams. 



protis'toid (Protista = Protophyta + 

 Protozoa, from 7r/jc6rt(rros, the very 

 first, el5os, resemblance), in cell- 

 division, not influenced by the 

 cells forming part of a complex 

 multicellular body (Hartog). 



Pro'tOblast (Trpwros, first, /9Xa<rros, a 

 bud), Baillon's term for the cell 

 before the formation of a cell- wall, 

 the naked mass of protoplasm ; Pro- 

 tochlor'ophyll ( + CHLOROPHYLL), a 

 pigment found in etiolated leaves 

 with carotin and xanthophyll 

 (Monteverde) ; Protochlorophyr- 

 line, a product of reduction of 

 the green principle of chlorophyll 

 (Timiriazeff), cf. PROTOPHYLLINE ; 

 protococ'coid (eTSos, resemblance), 

 resembling the algal genus Proto- 

 coccus ; Protocollench'yma ( + COL- 

 LENCHYMA), the earliest formed 

 elements of collenchyma ; Pro'- 

 tocorm (Acop/ioj, a trunk), the tuber 

 of Phylloglossum and other Lyco- 

 pods, the only branch which deve- 

 lops into next year's tuber ; Pro- 

 toe'p'iphyte ( + EPIPHYTE), a plant 



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