Aiphyllophyta 



Albuminates 



evergreen forests ; Aiphyti'a, ulti- 

 mate or fixed formations (Clements). 



Air-Blad'ders, intercellular spaces in 

 some Algae, serving as floats ; -^ 

 Cavity = '--Chambers (2); ~ -Cells, 

 '~ -Chambers, (1) intercellular spaces 

 occurring in aquatic plants, usually 

 prismatic in form, (2) the inter- 

 cellular space beneath a stoma ; <-* 

 Passage, = — -Chamber ; '-- -Plants, 

 epij^iytes, as Bromeliads and some 

 Orchids ; -' Pores, (1) i= Stoma- 

 TA, (2) Pneumathodes of Hepaticae, 

 '-' Roots ^ Pneumatophores ; <-' 

 Sacs, cavities in the pollen-grains 

 of Pinus ; '-' Vessels, term formerly 

 applied to empty tracheids, etc. 



Aithali'am {aeidah^s, an evergreen 

 thicket), a formation of evergreen 

 thickets ; aithaloph'ilus {(piXew, I 

 love), plants delighting in such 

 habitats ; Aithalopby'ta {<pxnhv, a 

 plant), plants composing such for- 

 mations (Clements). 



aitiogen'ic, aitiog'enuus {atnos, caus- 

 ing ; yevos, offspring), due to 

 external causes ; Aitiomorpho'sis 

 {/M6p<pw(Tis, change), change in shape 

 caused by external factors (Pfeffer), 

 adj. altiomorpb'ous ; aitiouastlc 

 {uaffrhs, pressed close), bent from 

 some external cause Aitionas'ty, 

 the condition itself; aitionom'ic, 

 aition'omous {v6fios, law), due to 

 external circumstances, as growth- 

 curvature ; Aition'omy is the condi- 

 tion ; Aitiotlopism (rpoir);, a turn- 

 ing), movement depending upon 

 outside causes ; adj. altiotrop ic ; 

 aitog'enous = aitiogenous. 



akar'yote (o, without ; Kapuov, a nut), 

 the chromidial condition after the 

 close of the vegetative phase in 

 Plasmodiophoraceae, when the 

 nucleus has disappeared. 



Akene', Ake'nium, = Achene, Achen- 

 ium. 



Akine'sis (a, without ; Kivriais, move- 

 ment), increase without the phenom- 

 ena of karyokinesis ; A'kinetes, in 

 green Algae, single cells whose 

 walls thicken and separate off from 

 the thallus, corresponding to the 



chlamydospores of Fungi ; imraotile 

 reproductive cells, formed without 

 true cell- formation, or rejuvene- 

 scence. 



Akla'dium = Aclat>ium. 



A'la (Lat., wing), (1) formerly an axil, 

 but now obsolete in that sense ; (2) 

 a lateral petal of a papilionaceous 

 flower ; (3) a membranous expansion 

 of any kind, as in the seed of 

 Bignoniaceae ; (4) employed by Wm. 

 Smith for the marginal processes in 

 Surirella : (5) the outer segment of 

 the coronal lobes in some Asclepiads ; 

 (6) in Mosses, the a'lar cells are 

 those at the basal angle of a leaf. 



Alabas'trum (Lat., bud), a flo^pr- 

 bud. 



a'lar, ala'ris {ala, wing), (1) formerly 

 used for axillaris ; (2) --' Cells, cf. 

 Ala (6). 



alate', ala'tus (Lat., winged), furnished 

 with an expansion, as a stem or 

 petiole ; alatepinna'tus, when the 

 common petiole of a pinnate leaf is 

 marginally winged. 



alba'tus (Lat.), whitened; Aibe'do 

 ( Lat.), whiteness ; Albefac'tion {facio, 

 I make), blanching ; albes'cent, 

 albes'cens,hecom.mg white; arbicant, 

 albicans, tending to white : Albi- 

 ca'tion, becoming blanched or varie- 

 gated with white ; albid'ulus, 

 al'bidus, albin'eus (Lat.), whitish ; 

 Arbinism, a disease from absence of 

 normal colouring, producing an 

 Albi'no ; albi'nus, al'bulus (Lat.), 

 somewhat white. 



Al'bumen (Lat., white of an egg), the 

 nutritive material stored within the 

 seed, and in many cases surrounding 

 the embryo. (Note. Not to be 

 confounded with animal Albumen.) 

 Restricted by Van Tieghem to the 

 result of the development of the 

 Trophime, the central nucleus of 

 the embryo-sac ; Al'bumin, in plants, 

 the proteids which readily coagulate 

 from their aqueous solutions by the 

 action of heat or acids ; Albu'mi- 

 nates, nitrogenous substances in- 

 soluble in water, soluble in dilute 

 acids or alkalies, e. g. gluten of 



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