Generations 



Germ 



actively concerned in fertilization; 

 Genera'tions, alternation of, see 

 ALTERNATION ; Generative Nu'cleus, 

 see NUCLEUS. 



generic, r/cner'icus (genus, birth, race), 

 the differences which make the 

 genus as opposed to those which 

 make the order, or species. 



Genesiol'ogy (y&ecris, origin, \6yos, dis- 

 course), the doctrine of the trans- 

 mission of qualities from the parent, 

 both in vegetative and sexual repro- 

 duction (Archer) ; genet'ic, genea- 

 logical, that which conies by in- 

 heritance; ~ Spi'ral, a spiral line 

 which passes through the point of 

 insertion of all equivalent lateral 

 members on an axis, in order of 

 age. 



genic'ulate, genicula'tus (Lat., with 

 bent knees), abruptly bent so 

 as to resemble the knee-joint ; 

 Genic'ulum, a node of a stem 

 (Lindley). 



Genita'lia, Gen'itals (genitalis, per- 

 taining to birth), in plants, the 

 stamens and pistils, or their an- 

 alogues. 



Gens (Lat., a nation), a tribe in 

 botany. 



Gen'tianine, the bitter principle of 

 Gentiana. 



Genuflec'tion (ge,nu, the knee, fleet o, 

 I bend), a bend in a conjugating 

 filament of an Alga ; gen'uflexed 

 (flexus, bent), bent, as the valves 

 of certain Diatoms. 



Gen'us (Lat., a race), the smallest 

 natural group containing distinct 

 species ; large genera are frequently 

 for the sake of convenience divided 

 into sections, but the generic name 

 is applied to all species ; ~ Hy'brid, 

 a hybrid between two genera, a 

 bigener or bigeneric cross. 



Ge'oblast, G'eoblas'tus (yfj, the earth, 

 /3Acto"ros, a bud), an embryo whose 

 cotyledons remain under ground in 

 germination as the pea. 



geocal'ycal, resembling the Hepatic 

 genus Geocalyx, Nees ; marsupial. 



Geoaethe'sia (71?, the earth, ai<r6r)cris, 

 perception by sense), the capacity 



of a plant to respond to the stimu- 

 lus of gravity. 



geographic (yparpT), writing), descrip- 

 tive of the earth or a portion there- 

 of ; ~ Bot'any, that department 

 which takes account of the <~ 

 Distribution of plants over the 

 earth's surface ; geologic (\6yos, 

 discourse) Bot'any = Palaeobotany 

 or Fossil Botany ; geoph'ilous 

 (0iAe'w, I love), earth loving, 

 used of such plants as fruit 

 underground ; <~ Fun'gi, those 

 which grow saprophytically on 

 decaying vegetable matter on the 

 ground ; Ge'ophytes (<pvrov, a plant), 

 applied by Areschoug to those 

 plants which produce underground 

 buds, without partial development 

 there; geonyctitroplc (vi/%, VVKTOS, 

 night, rpoiTT), a turning), sleep- 

 movements requiring also the 

 stimulus of gravity ; Geotaxls 

 (rd^is, order), movement in plants 

 caused by gravity (Czapek) ; Geo- 

 thermom'eter (0e/3^os, warm, perpov, 

 a measure), a thermometer for 

 earth temperatures ; Geotortlsm 

 (tortus, twisted), torsion caused by 

 the influence of gravitation (Schwen- 

 dener and Krabbe) ; Geot'rophy 

 (r/50077, food), unilateral inequality 

 in growth clue to position with 

 regard to gravity (Wiesner) ; geo- 

 troplc (rpoTrrj, a turning), relating 

 to the influence of gravity on grow- 

 ing organs ; Geot'ropism, the force 

 of gravity as shown by curvature in 

 nascent organs of plants ; neg'ative 

 ~ growing away from the earth, 

 as stems do normally ; positive, 

 growing towards the earth's centre, 

 as roots ; trans'verse ~ , = DIAGEO- 

 TROPISM. 



Germ (yermen, a bud), (1) a bud or 

 growing point ; (2) the ovary or 

 young fruit ; (3) a reproductive 

 cell, especially in bacteria ; ~ 

 Cell, (1) a female reproductive cell ; 

 (2) a spore of the simplest character, 

 a sporidium (Brefeld) ; ~ Nu'cleus, 

 the nucleus resulting from the 

 union of the pronuclei of two 



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