aerobiotic 



agrarian 



gen ; applied to certain bacteria ; 

 aerobio'tic, needing air for exist- 

 ence ; Aerobio'sis, life in atmo- 



spheric air ; Ae'rocyst (/ctfoTts, a bag 

 or pouch), the air-bladders of such 

 algae as Fucus vesiculosus, Linn. ; 

 Ae'rophyte (<j>vrov t a plant), air- 

 plant, epiphyte ; Aerotaxls (rafts, 

 arrangement), used by Hartog to 

 express positive stimulus by oxygen 

 to the irritability of zoospores, adj. 

 aerotactlc; Aerot'ropism (rpov^, a 

 turning), the influence of gases on 

 growth and curvature, it is a 

 form of CHEMOTROPISM ; adj. ae'ro- 

 trop'ic. 



aeru'ginose, aeruglnous, aerugin'eus, 

 aerugino'sus (aerugo, the rust of 

 brass), the blue-green colour of 

 verdigris. 



Aesc'ulin, an alkaloid from the horse- 

 chestnut; Aescidus Hippocastanum, 

 Linn. 



Aestfce'sia (afodijffis, perception by 

 sense), Czapek's expression to de- 

 note the capacity of an organ to 

 respond to definite physical stimuli. 



aes'tival, aestiva'lis, belonging or pecu- 

 liar to summer j Aestiva'tion, Aesti- 

 va'tio, the manner in which the 

 parts of a flower are folded up before 

 expansion. 



Aete'rio = ETAEBIO. 



Aetha'lium (atda\os, soot), a com- 

 pound sporiferous body, formed 

 from a combination of plasmodia 

 in Myxogastres ; Ae. septicum, Fr., 

 is known as " Flowers of Tan " ; 

 aetha'lioid (e?5os, form), like the 

 last. 



aethe'os (di707?s, unusual), in com- 

 pounds = unusual ; aetheogamlc, 

 aetheog'amous (yd/j,os, marriage), 

 synonymous with cryptogamic. 



aethe'reus (Lat.), aerial. 



Aetiol'ogy (atriov, cause ; \6yos, dis- 

 course), the doctrine of the cause 

 of disease, as of Vegetable Galls ; 

 also spelled Aitiology and Etiology. 



Affinity (affin'itas, near alliance), the 

 closeness of relation between plants 

 as shown by similarity of import- 

 ant organs. 



affix'ed (affix' us, fastened to), fixed 

 upon. 



Ag'amae (a, without, 7d>os, marriage) 

 = Cryptogamae ; agamic, ag'amous, 

 Necker's term for cryptogamous ; 

 Agamogen'esis (yevecris, origin), 

 asexual reproduction by buds, 

 gemmae, etc. ; Agamophy'ta (Qvrbv, 

 a plant), C. Macmillan's term foi 

 protophytes; Agam'ospore (<rirop&, 

 a seed), a spore or gonidium pro- 

 duced asexually. 



A'gar, a gelatinous product from 

 Agar-agar, or Agal-agal, which 

 consists of various marine Algae 

 from tropical Asia; also called 

 "Ceylon Moss" and "Bengal 

 Isinglass." 



Agaric Acid (Agariciis, Tourn., a 

 genus of Fungi), found in Polyporus 

 officinalis, Fr.; Agaricic'ola (colo, 

 I inhabit), applied to a parasite 

 on Hymenomycetous Fungi ; Hens- 

 low prints it as agaric'olus. 



agen'ius (a, without, yevos, sex, race) 

 = neuter; a'genus, used of cellular 

 Cryptogams, " which are enlarged 

 by the addition of new parts." 



Agged'ula (derived by Necker from 

 d77etSioj', a little vessel), the spor- 

 angium of Mosses, and of Puccinia. 



Ag'geres (Lat.), banks or rockwork 

 in botanic gardens. 



agglomerate, agglomerated, agglom- 

 era'tus (Lat. crowded together), col- 

 lected into a head, as the flowers 

 of Scabious. 



j agglu'tinate (agglutino, I glue), glued 

 together, as the pollen-masses of 

 Asclepiads or Orchids ; accrete. 



ag'gregate, aggregated, aggrega'tus 

 (Lat. assembled), collected to- 

 gether, as the flowers of Cuscuta ; 

 ~ Flowers, those gathered into a 

 head, as Dipsacus, but not as in 

 Compositae, which are capitulate ; 

 "" Fruits, collection of separate 

 carpels produced by one flower, 

 the product of a polycarpellary 

 apocarpous gynaecium ; Aggre- 

 ga'tion, condensation of cell-con- 

 tents under some stimulus. 

 | agrarian (agrar'ius, pertaining to 



