agrestal 



Albumoses 



the field). H. C. Watson's term for 

 the cultivable portion of Great 

 Britain ;<~ Region, divided into three 

 ~ Zones, the super-, mid-, and infer- 

 agrarian zones. 



agrest'al (agrestis, belonging to the 

 lield) ; (1) Watson's term for plants 

 growing in arable ground ; (2) rural 

 generally. 



agricultural Bot'any (agricultural, 

 husbandry), that part of economic 

 botany which relates to farm plants. 



Agrostog'raphy(a7/5W(7Tis, grass, ypa<f>T], 

 writing), the description of grasses ; 

 Agrostol'ogy (\6yos, discourse), the 

 botany of grasses. 



agyna'rius J (a, without, 71^77, a 

 woman) ; agyn'icus ; (1) said of 

 stamens which are free from the 

 ovary ; (2) pistils wanting, desti- 

 tute of pistils ; ag'ynous, monstrous 

 flowers with pistils missing. 



Ai'gret (Fr. Aigrette, tuft of feathers), 

 the pappus of Compositae ; Eng- 

 lished by T. Martyn as E'gret. 



aiophyl'lus (ai&v, eternity, (f>v\\ov, 

 a leaf), evergreen. 



aima, in Greek compounds = blood- 

 coloured ; properly hsema (from 

 alaa, blood). 



Air-Blad'ders, intercellular spaces in 

 some Algae, serving as floats ; ~ 

 Cav'ity = 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, 

 epiphytes, as Bromeliads and some 

 Orchids ; ~ Pore, = STOMA ; ~ Sacs, 

 cavities in the pollen-grains of 

 Finns ; ~ Vessel, term formerly 

 applied to empty tracheids, etc. 



Akene', Ake'nium, =ACHENE, ACHEN- 

 IUM. 



Akine'sis (a, without, Klvtjcns, move- 

 ment), increase without the phenom- 

 ena of karyokinesis ; A'kinetes, in 

 green Algae, single cells whose 

 walls thicken and separate from 

 the thallus, corresponding to the 

 chlamydospores of Fungi ; immotile 

 reproductive cells, formed without 



true cell-formation, or rejuvene- 

 scence. 



Ala (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 pro- 

 cesses in Surirella ; (5) the outer 

 segment of the coronal lobes in some 

 Asclepiacls ; (6) in Mosses, the a'lar 

 cells are those at the basal angle 

 of a leaf. 



Alabas'trum (Lat. bud), a flower-bud. 



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

 used for AXILLARIS ; (2) ~ Cells, c'f. 

 Ala (6). 



alate', ala'tua (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 ; Albe'do 

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

 I make), blanching ; albes'cent, 

 albes'cens, becoming white; al'bicant, 

 al'birans, tending to white ; 

 albid'idus, al'bidus, albin'eus, 

 whitish ; Albinism, a disease from 

 absence of normal colouring, dis- 

 playing itself as anAlbi'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.) 

 Al'bumin, in plants, the proteids 

 which readily coagulate from their 

 aqueous solutions by the action of 

 heat or acids ; Albu'minoids (eu5os, 

 resemblance), nitrogenous organic 

 substances, proteids ; albumino'se, 

 albu'minous, albumino'sns, contain- 

 ing albumen, a term restricted to 

 seeds ; Albu'minates, nitrogenous 

 substances insoluble in water, 

 soluble in dilute acids or alkalis, 

 e.g., gluten of wheat; Albumo'ses, 

 similar to albuminates, but soluble 

 in water ; common constituents of 

 aleuron. 



