g-anglioneons 



Oemmation 



ganglion'eous, used by Lindley for 

 hairs whi<li bear branchlets on their 

 articulations. 



Gan'grene, Gangre'na {ydyypaiva, an 

 eating ulcer), a disease ending in 

 putrid decay. 



Gap, see Leaf-gap. 



Garide' (disylL), Chodat's term for 

 bush land composed of deciduous 

 shrubs occurring in the Jura and 

 the Rhone Valley. 



jGarigue' (disyll. ), the French term for 

 vegetation belonging to forest soil, 

 but wanting trees ; widespread in 

 the Mediterranean region. 



Gas, pi. Gas'es, in plants, a continu- 

 ous system from the stomata and 

 lenticels by the intercellar spaces ; 

 Gas-vac'uoles, special floating organs 

 in certain Cyanophyceae, as Aiia- 

 haina ( Kerner) ; Gasoplank'ton ( + 

 Plankton), organisms which float 

 by means of air vacuoles (Forel). 



Gastercli'chenes (yacT^p, the belly + 

 (Lichen), defined as Gasteromycetes 

 in symbiosis with Algae ; Gastero- 

 myce'tes {fj-vxris, fungus), a division 

 of Fungi which includes Lycopcrdon, 

 Puff"-balls ; Gasterothalam'eae {ddxa- 

 fjLos, a bed-chamber), referring to 

 those Lichens whose sporangia are 

 always closed or which burst through 

 the cortical layer of the thallus ; 

 gas'tric Bacte'ria, those which are 

 found in the digestive tract of ani- 

 mals ; Gastronas'ty [vacrrhs, pressed) 

 = Hyponasty. 



Gattine' (Fr. ), a disease in silkworms 

 caused by parasitic Fungi. 



Gaurtherase, an enzyme producing oil 

 of Wintergreen and glucose from 

 Gaul'therin, a principle occurring in 

 GauUheria. 



Geitonemb'ryosperm {ytlruv, a neigh- 

 bour ; i(xl^pvQv, foetus ; cirepfia, a 

 seed), a plant with parthenogenetic 

 embryo, fertilized by pollen from a 

 diff"erent 'flower on the same stock ; 

 Geitcnen'dosperm (Ij/Sov, within), a 

 plant with parthenogenetic endo- 

 sperm, fertilized by pollen from a 

 neighbouring flower on the same 

 stock ; Geitonocar'py {Kapvhs, fruit), 



the production of fruit as the out- 

 come of Geitonggamy ; Geitonog'- 

 amy {ydfios, marriage), fertilization 

 between neighbouring flowers on the 

 same plant ; Geit'onosperm, a plant 

 whose embryos arise by geitonogamy, 

 and are not parthenogenetic, three 

 terms due to C. MacMillan. 



Geratin {gela'tus, congealed), in plants 

 confined to albumen-like bodies, 

 which are tough, viscid, and scarcely ' 

 soluble in water ; Gelat'ina hy- 

 mene'a, a gelatinous substance sur-* 

 rounding the asci and paraphyses 

 in some Lichens (Leighton) ; Gela- 

 tiniza'tioil, used when a membrane 

 breaks down into a jelly-like msiss ; 

 gelat'inose, gelatino'sns (gelatio, 

 freezing), having the consistence or 

 Appearance of jelly ; gelat'inous, 

 jelly-like ; '-' Felt ; ~ Tis'sue, tissue 

 which is slimy from the cell mem- 

 brane being soft and mucilaginous ; 

 Gel'atoid {elSos, like), suggested for 

 protein-like substances resembling 

 ge'atin (Escombe) ; Geliflca'tion, be- 

 coming gelatinous ; Gelin'eae, cells 

 in Algae which secrete vegetable 

 jelly ; Gel'ose, vegetable jelly from 

 Agar-Agar. 



Gem, a leaf-bud, cf. Gemma. 



Gem'inate, gemitia'tus (Lat. doubled), 

 in pairs, binate. 



Gem'ini (Lat), (1) twins, paired; (2) 

 the union of two chromosomes ; 

 Synap'tic ~ , the pairing of somatic 

 chromosomes in prophase of the 

 first or heterotypic meiotio division ; 

 geminiflor'uB (/os, florid, a flower), 

 bearing two flowers, or- two flowers 

 together. 



Gem'ma (Lat.), (1) a young bud, either 

 of flower or leaf, as used by Ray ; 

 (2) an asexual ])ro(luct of some 

 Cryptogams, as in the Hepaticae, 

 analogous to leaf-buds ; «' Brood = 

 Brood-gemma; --' Ciip= Cyathus ; 

 gemma'ceous (-f aceous), relating 

 to leaf-buds ; Gem'maecorm ( + 

 Gorm), J. Smith's term for a bud- 

 corm, applied to herbaceous plants 

 with a root- crown which increases 

 by side-buds; Gemma'tioa, Qem- 



157 



