dysgeogenous 



ecological 



dysgeog'enouB (5u<r-, i. e bad ; 77), the 

 earth; yivvao}, I bring forth), em- 

 ployed by Thurmann for those 

 plants growing on soils which do 

 not readily yield detritus ; hard 

 rocks generally, such as granite ; 

 dyspho'tic dysphotis'tic (<^ws, (pwThs, 

 light), applied by A. F. W. Schimper 

 to the deeper situated Benthos ; -^ 

 Plants, are th' se which are adapted 

 to a minimum of light ; dysphoto- 

 trop'ic {rpoTTTf), a turning), used of 

 leaves adajited to a certain amount 

 of light, but not too intense, as 

 Lactuca Scariola ; Dysteleorogy 

 {t4\05, completion ; \6yos, dis- 

 course), frustration of function ; as 

 where an insect obtains honey by 

 puncluring a nectary instead of by 

 the floral opening ; atlj. , dysteleolog'- 

 ic, ^ cal ; Dysteleorogist, an agent 

 which evades the teleologic end, as 

 a bee which obtains honey by means 

 Avhich do not conduce to fertilization ; 

 dyst'ropous (tpott^, a turning), in- 

 jurious insect- visiting, so f<ir as the 

 flowers are concerned ; Dys'tropy, 

 the condition described. 



Dyss'ophytes, -ae {Siaahs, two-fold ; 

 (pvTov, a plant). Clements's term 

 for plants which are sometimes 

 hydrophytes and sometimes aero- 

 phytes ; the author gives the deriva- 

 tion as from " duaahs, double." 



e, ex, in Latin compounds, privative, 

 as ecostate, without ribs. 



Ear, the spike of corn ; £ar-coc'kles 

 of wheat, a disease due to eel- 

 worms, Tyletichus tritici ; ear- 

 formed (Loudon), eared, auriculate. 



ebe'neous, black as ebony, the heart- 

 wood of Diospyros Ebenum, Koen. 



ebeta'tus = UEnETATUs. 



ebori'nus {eboreus, made of ivory), 

 ivory-like, or ivory-white. 



ebrac'te"te, chrad ea' tus (e, priv. ; 

 hractea, a biact), without bracts ; 

 ebrac'teolate, ehracteola'tus, desti- 

 tute of bracteoles, 



eburn'eous, -eus (Lat., of ivory), ivory 

 white, white more or less tinged 

 with yellow. 



E'cad [oIkos, a house ; -f. ad), a habitat 

 form due to origin by adaptation 

 (Clements). 



ecalc'arate, ecalcara'tus {e, priv. ; 

 calcai\ a spur), spurless ; ^cau'dal 

 {rauda, a tail), ^vithout a tail or 

 similar appendage. 



Ecballi'um, or Ecballi'on {iK$d\\a), I 

 throw out), succession of plants after 

 timber felling (Clements). 



Ecblaste'sis {^k, out of ; fiXaart], 

 gi'owth), the appearance of buds 

 within a flower, prolification of the 

 inflorescence. 



eccen'tric = rxcentric. 



Eo'dysis {fKlvtris, a shifting out), 

 exuviation or the physiological 

 mechanism by which Dinoflagellata 

 rid themselves of their carapace 

 (Kofoid). 



Ece'sis, or Oece'sis {oIktictis, the act 

 of dwelling), the germination and 

 establishment of invaders. 



Ech'ard (ex'") I withhold), the non- 

 available water of the soil (Clements). 



Echi'nops-fluorescine, Echinops'ein, 

 and Echinops'ine, alkaloids found in 

 Echinops liitro (Greshoff). 



ecWor'ophyllose (e, priv. ; + Chloko- 

 piiyll), without chlorophyll ; scari- 

 ous ; ech'inate, echina'tus (Lat., 

 prickly), beset with prickles ; ecMn'- 

 ulate,ecAi/iM^ai'«s, having diminutive 

 prickles. 



Ech'ma, pi. Ech'mata (^XM«. a- sup- 

 port), the hardened hook-shaped 

 funicle in most Acanthaceae which 

 supports the seed ; cf. Retinacu- 

 lum (3). 



Ecid'ium (Crozier) = Af.cidium. 



ecil'iate (+ Cilium), without cilia. 



Ecogen'e8i8(o?/cos,a house ; + Genesis), 

 the origin of ecologic factors ; ect)- 

 log'ic Opt'imum. when the sur- 

 roundings off"er the most favourable 

 conditions for the life of a given 

 plant ; Ecorogism = Ecology ; 

 Ecorogist, or Oecorogist, a student 

 of the life of the plant in relation 

 to its surroundings ; Ecorogy (\6yos, 

 a discourse), or Oecorogy, the study 

 of plant-life in relation to envii'on- 

 ment ; adj. ecolog^ical, oecolog'ical ; 



121 



