aeqinipotential 



Alnetum 



tial), of equal power, applied to 

 theory of phyllotaxis (Church). 

 Afir'ial Wafer, rain or dew, as dis- 

 tinguished from terrestrial or under- 

 ground supply ; Aeromorpho'sis 

 {fi6p<f>ajais, form), change due to 

 greater exposure to air or wind 

 (Turesson) ; aeroper'meable, the 

 permeable part of the root to the 

 passage of gases and liquids (S. 

 Baker) ; Aerophi'lae {^lAc'co, I love), 

 algae living fully exposed to the 

 air, and not on the ground (Ivanofi) ; 

 Aerox'yl (^uAov, wood), applied 

 by Lindman to trees and woody 



Elants with an evident bole, and 

 ranches above ground ; cf. Geoxyl. 



Aestatifrutice'ta {aestaSf summer ; 

 fruticeium, a thicket), summer cop- 

 pices ; Aestatisil'vae {silva, a wood), 

 woods with leafage in summer. 



aetiogen'ic, = aitiooenic. 



Afloresta'tion (late Lat. afforestare), 

 bringing land under the conditions 

 of forest ; the act of conversion 

 into forest or woodland. 



Agame'tospore, Janet's form of Aga- 

 mospore; Agamog'ony {yo^os, o£E- 

 spring) = Schizogony ; Ag'ametes 

 [trisyl,] pi. ; reproductive bodies 

 capable of growth to adult form 

 without syngamy; Agamohyp'no- 

 spore (+ Hypnospore), a large 

 resting spore ( Wittrock) ; Ag'amont 

 (ovra, things existing), the indivi- 

 dual which produces Aoametes. 



Age and Area, Willis's theory that 

 the older a species is within a given 

 country, the greater its area. 



Agglanna'tion, when bacteria draw 

 together in masses (Conn). 



Agi'am, afterwards altered by the 

 author to Aigialium. 



Agrorogy {Xoyos, discourse), the 

 science of soils, and their support 

 of special vegetation ; Agron'omy 

 {vofjLos, custom), agriculture. 



Agrostide'tum, an association of 

 Agrostis. 



aigic'olous {colo, I dwell), a tenant 

 of stony strand, also applied to an 

 association of such plants. 



Air-bags, Withering's term for Fol- 



licle ; ~-pits, weU-developed pita 

 in thick cell-walls for aeration 

 (Jeffrey) ; '--spaces, carinal cavities 

 in the fibrovascular strands of 

 Equisetum Linn. (Jeffrey). 



albinot'ic, affected with albinism ; 

 ^ Cells, '-' Lay'ers, or Tis'sue, 

 those parts when destitute of 

 chlorophyll. 



albopellicula'tas {penicillatus, skinned), 

 having a layer of colourless cells 

 below the epidermis, with a green 

 core, as in Mesenihrianthemum, 

 Dill. (Correns) ; albotunica'tua 

 {tunicatus, wearing a tunic), a 

 similar phenomenon in Pelargonium 

 L'Herit. 



Albn'min-cells, groups of 6-12 small 

 cells, with granular contents and 

 large nuclei on outer flanks of 

 phloem of each bundle in stems of 

 Gymnosperms (Church). 



Alchemille'tum, an association of 

 Alchemilla Linn. 



-ale, suffix for Colony ; cf. Hordeale, 

 etc. (Clements). 



allocho'ric {xcopos, a place), used of a 

 species inhabiting two or more 

 closely related formations in the 

 same region, as adjoining forest 

 and grassland (Drude). allochth'- 

 onous ix^c^^, x^^^oSf earth), 

 applied to peat due to gradual 

 accumulation of drifted material 

 in still water (Forsaith) ; alo- 

 merist'ic [fJiepicmKos, fit for divi- 

 sion), groups which differ meristic- 

 ally from the majority of related 

 groups, as Veronica Linn, with a 

 4-lobed corolla, when most Scrophu- 

 lariaceae have 5 (Riley) ; Allo- 

 mefron {n^'^pov, a measure), 

 *' quantitative and intensive char- 

 acters " (Osborn). All'osomes 

 {acofia, a body), a general term 

 for aberrant chromosomes. 



Allu'vial Association, a boundary 

 zone between water and dry land, 

 such as favours the growth of 

 Tamarix Linn, and HippopMe 

 Linn. 



Alae'tnm, an association of Alnua 

 Linn. 



418 



