aérobiotic 
agrarian 
gen; applied to certain bacteria; 
aérobio'tic, needing air for exist- 
ence; Aérobio’sis, life in atmo- 
spheric air ; Aé’rocyst (Kdoris, a bag 
or pouch), the air-bladders of such 
algae as Fucus vesiculosus, Linn. ; 
Aé’rophyte (gurcv, a plant), air- 
plant, epipryte ; Aérotax’is (rdéus, 
arrangement, used by Hartog to 
express positive stimulus by oxygen 
to the irritabiity of zoospores, adj. 
aérotactiic; Aé-ot/ropism (rporh, a 
turning), the inluence of gases on 
an and cwvature, it is a 
orm of CHEMOTYoPISM ; adj. aéro- 
trop‘ic. 
aéru’ginose, aerug’imus, aerugin’eus, 
aerugino'sus (aeruy, the rust of 
brass), the blue-gieen colour of 
verdigris. 
Aese’ulin, an alkaloid fiom the horse- 
chestnut; Aesculus Hypocastanum, 
Linn. 
Aesthe’sia (alc@yo1s, peiception by 
sense), Czapek’s expresion to de- 
note the capacity of a1 organ to 
respond to definite physical stimuli. 
aes tival, aestiva’lis, belongitg or pecu- 
liar to summer ; Aestiva’tin, Aest2- 
va'tio, the manner in wiich the 
parts of a flower are folded up before 
expansion. 
Aete’rio = ETAERIO. 
Aetha'lium (ai@ados, soot), a com- 
pound sporiferous body, brmed 
from a combination of plasnodia 
in Myxogastres ; Ae. septicum Fr., 
is known as “Flowers of Tin”; 
aetha’lioid (el5os, form), like the 
last. 
aéthe’os (d407s, unusual), in om- 
pounds = unusual; aétheogarric, 
aétheog’amous (yauos, marriag), 
synonymous with cryptogamic. 
aethe’reus (Lat.), aérial. 
Aetiology (alriov, cause; Adyos, di- 
course), the doctrine of the caus 
of disease, as of Vegetable Galls 
also spelled Aitiology and Etiology. 
Affin’ity (afin'itas, near alliance), the 
closeness of relation between plants 
as shown by similarity of import- 
ant organs. 
affix’ed (afix’us, fastened to), fixed 
upon. 
Ag’amae (a, without, yduos, marriage) 
= Cryptogamae ; agam’ic, ag’amous, 
Necker’s term for cryptogamous ; 
Agamogen’esis (-yévecis, origin), 
asexual reproduction by buds, 
gemmae, etc.; Agamophy‘ta (¢urdv, 
a plant), C. Macmillan’s term for 
protophytes; Agam/ospore (c7opd, 
a seed), 4 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 (Agaricus, 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, yévos, sex, race) 
=neuter; a’genus, used of cellular 
Cryptogams, ‘‘ which are enlarged 
by the addition of new parts.” 
Agged’ula (derived by Necker from 
dyyetd.ov, a little vessel), the spor- 
angium of Mosses, and of Puccinia. 
Ag’geres (Lat.), banks or rockwork 
in botanic gardens. 
agglom’erate, agglom’erated, agglom- 
era’tus (Lat. crowded together), col- 
lected into a head, as the flowers 
of Scabious. 
agglu’tinate (agglutino, I glue), glued 
together, as the pollen-masses of 
Asclepiads or Orchids; accrete. 
ag’gregate, ag’gregated, 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 
