Aerotropism 



Agar 



(rpoir)?, a turning), the influence of 

 gases on growth and curvature ; it 

 is a form of Chemotropism ; adj. 

 aerotrop'ic. 



aeru'ginose, aerug'inous, ae^-ugin'eus, 

 aerngino'sns, {aerugo, the rust of 

 brass), the blue-green colour of 

 verdigris. 



Aesc'ulin, an alkaloid from the horse- 

 chestnut ; Aesculus Hippocasianum, 

 Linn. 



Aestatifrutice'ta, pi. {aestas, the hot 

 season ; friiticetum, a thicket), de- 

 ciduous bush formation ; Aestati- 

 sii'vae, pi. {silva, a wood), deciduous 

 forests. 



Aesthe'sia {ataer.cris, perception by 

 sense), Czapek's expressioji to de- 

 note the capacity of an organ to 

 respond to definite physical stimuli ; 

 Aesthe'sis, the apparent perception 

 on the part of a root (Czapek). 

 ^aes'tival, aestiva'lis, belonging or 

 peculiar to summer ; Aestiva'ria, 

 the summer quarters of plants in 

 botanic gardens. 



Aestiva'tion, A estiva' tio, the manner 

 in which the parts of a flower are 

 folded up before expansion. 



Aestuar'ium (Lat., a tidal estuary), 

 applied to a flat shore which is 

 flooded with sea-water at spring- 

 tides (Warming). 



Aete'rio = Etaerio. 



Aetha'lium {ai9a\os, soot), a couj- 

 pound s[)oriferous body, foiTned 

 from a combination of plasmodia 

 in Myxogastres ; Ae. sepiicum, Fr. , 

 is known as "Flowers of Tan"; 

 aetha'lioid {eUos, form), like the last 



aethe'os {a-qd-qs, unusual), in com- 

 pounds = unusual ; aetheogam'ic, 

 aetheog'amous {yafjLos, marriage), 

 synonymous with cryptogamic. 



aethe'reus (Lat,), aerial,- 



aetiog'enous {atnov, cause ; yevhs, off- 

 spring), caused externally ; cf. 

 All 10- ; Aetiorogy (x<J7os, discourse), 

 the doctrine of the cause of disease, 

 as of Vegetable Galls ; also spelled 

 Aitiology and Etiology. 



Affinity {affoi'itas, near alliance), the 

 closeness of relation between plants 



as shown by similarity of import- 

 ant oigans. 



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

 upon. 



afo'liate (a, without ; folium, a leaf), 

 leafless ; a hybrid word for aphyl- 

 lous. 



Aft'er-ri'pening, applied to the period 

 of dormancy in many seeds before 

 germination, as those of Crataegus. 



Ag'ad (07^, beach), a beach plant ; 

 Agi'mn, an association of beach 

 plants (Clements). 



Ag'amae (a, without ; ydfxos, marriage) 

 = Cryptogamae ; Agamandroe'cism 

 (4- Androecium), in Compositae, 

 having male and neuter flowers 

 in the same individual ; agam'ic, 

 ag'amous, Necker's term for crypto- 

 gamous ; Agamob^ium (ffios, life), 

 Harvey Gibson's term for the asexual 

 generation in organisms sho\ving 

 alternation of generations ; thesporo- 

 phyte ; Agamogen'esis {yevsais, 

 origin), asexual reproduction i3y buds, 

 gemmae, etc. ; Agamogjnae'cism 



- ( -j- Gynaeceum), in Compositae, 

 having female and neuter flowers 

 in the same individual ; Agamo- 

 gynomonoe'cism, the presence of 

 neuter, female, and perfect flowers 

 iu the same individual ; Agamo- 

 hennaph'roditism ( + hekmaphuo- 

 dite), with hermaphrodite and 

 neuter flowers in the same plant ; 

 Agamonoe'cia ( 4- Monoecia), used 

 by Engler and Prantl for those plants 

 which have hermaphrodite and barren 

 flowers in the same inflorescence, as 

 Viburnum Opahif^, Linn. ; Agamo- 

 noe'cism, the condition named ; 

 Agamophy'ta {<pvrhv, a plant), C. 

 MacMillan's term for protophytes ; 

 Agam'ospore {avoph, a seM), a spore 

 or gonidium produced asexually ; 

 agamotrop'ic {rpoii-f}, a turn), ap- 

 plied to flowers which remain open 

 without closing. 



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." 



