erileocns 



exoscopic 



erileuc'us (epiXiVKOs, white on the 

 surface), lustrous white (Balfour). 



Erin'eum, pi. Erin'ea, Phytoptus mites 

 producing galls on the surface of 

 leaves, resembling fungi. 



Eripleog'amy (Ipis, strife, + Pleo- 

 gamy), Loew's term for flowers, one 

 each with stamens and pistils, 

 perfect, also andromonoecious and 

 gynomonoecious. 



Ero'sion, waste by water in various 

 forms ; progres'sive ^, deposits ; 

 retrogres'sive, removal (Cowles). 



Er'rera's Law, " a cellular membrane 

 at the moment of its formation, 

 tends to assume the form which 

 would be assumed, under the same 

 conditions, by a liquid film desti- 

 tute of weight." 



ese'tulose (+ setulose), destitute of 

 bristles. 



Esparte'tum, an association of esparto 

 grass, Stipa tenacissima Linn. 



Es'ters, pi. (invented by L. Gmelin), 

 ethereal salts or compound ethers ; 

 many are fragrant and are used 

 for artificial fruit essences; Es- 

 t'erases, fat-splitting enzymes like 

 Lipases. 



Etheogen'esis {eSos, custom, + 

 Genesis), parthenogenesis of a 

 male individual (Prowasek). 



Ethnobot'any, popular as folk-botany. 



E'thomere {edos, custom ; /xepos a 

 part), when the normal number of 

 chromosomes are present (Delia 

 VaUe). 



-eto'sum, group name denoting the 

 chief species of a subassociation, 

 as "Cistelosum," concerning Cistits 

 Linn. 



Euaposp'ory (+ Apospory), no 

 sexual act of fertilization; Eu- 

 bacter'ia (+ Bacteria), or Haplo- 

 bacteria, true bacteria (Conn) ; 

 Euchro'mosome (-+- Chromo- 



some), an autosome; Eucy'clic 

 Type, used of flowers which are 

 diplostemonoua or pentacyclic, as 

 Geranium Linn. (Church) ; Enge'o- 

 phytes (-f Geophytes), their resting 

 period due to want of warmth or 

 light (Massart). 



engle'noid {d8os, resemblance), re- 

 sembling the algae genus Evglena 

 Ehrenb. (Minchin). 



Eumyce'tes (fivKrjs, a mushroom), 

 true fungi (Conn) ; Eunu'cleus ( -f 

 NucLEUS), a nucleus containing red 

 corpuscles (Auerbach) ; Euphyllode 

 (4- Phyllode), the flattened pri- 

 mary axis of a bipinnate leaf, which 

 has lost its pinnae (Fletcher). 



eurycoe'nose (-}- coenose), widely dis- 

 tributed, common (Gams) ; c/. 

 stenocoenose ; Eu'rycysts, pi. 

 Morin's term for Pointer Cells, 

 the Deuter Cells of Limpricht ; 

 cf. Stenocysts ; enrysynu'sic, 

 widely distributed groups of plants 

 (Gams); cf. stengsynusic ; ~ 

 Spe'cies, " due to constant and 

 solid grouping " (Riibel) ; eury- 

 ther'mal, applied to a species of 

 wide distribution, able to withstand 

 diverse temperatures (Setchell) ; 

 the condition is Euryther'my ; 

 eurytrop'ic, wide adaptation of 

 species of varied condition (Solms) ; 

 cf. stenotropic ; eusporang'iate, for 

 ferns possessing special sporangia 

 and of primitive type (Bower) ; cf. 

 leptosporangiate ; entroph'ic, 

 applied to a swamp rich in 

 nutrients (Clements). 



Evaporim'eter, having the same use 

 as an Atmometer. 



Excln'siveness, closeness of definition 

 or fidelity to its characters of any 

 species in question. 



exobasid'ial (+ basidial), when a 

 sporophore is without a secondary 

 sporiferous branch (A. L. Smith) ; 

 exocort'ical, belonging to the Exo- 

 cortex ; Ex'oderm, the vernacular 

 equivalent of Exodermis ; exo- 

 g'amoas = exogamic ; Exolith'o- 

 phytes {+ LiTHOPHYTES), mosses 

 and lichens, from their seat 

 of growth (Wetter); Ex'ome, 

 secondary liber (Van Tieghem) ; 

 exoscopic {oKoiT€(v, I see). Bower's 

 term for the apical pole of an em- 

 bryo when turned towards the 

 neck of the archegonium, as in 

 mosses, cf. endoscopic; Exothio- 



P2 



437 



