abrobiotic 
agrarian 
gen; applied to certain bacteria; 
aérobio’tic, needing air for exist- 
ence; Aérobio’sis, life in atmo- 
spheric air; Aé’rocyst (Joris, a bag 
or pouch), the air-bladders of such 
algae as Fucus vesiculosus, Linn. ; 
Aé’‘rophyte (¢urdv, a plant), air- 
plant, epiphyte ; Aérotax’is (rdfus, 
arrangement), used by Hartog to 
express positive stimulus by oxygen 
to the irritability of zoospores, adj. 
aérotact’ic; Aérot’ropism (rpory, a 
turning), the influence of gases on 
owth and curvature, it is a 
‘orm of CHEMOTROPISM ; adj. aéro- 
trop’ic. 
aéru’ginose, aerug’inous, aerugin’eus, 
aerugino’sus (aerugo, the rust of 
brass), the blue-green colour of 
verdigris. 
Aese’ulin, an alkaloid from the horse- 
chestnut; Aesculus Hippocastanum, 
Linn. 
Aesthe’sia (aic@yots, 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 ; Aestiva’'tion, A esti- 
va'tio, the manner in which the 
parts of a flower are folded up before 
expansion. 
Aete’rio= ETAzERIO. 
Aetha’lium (al@ados, 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 (eldos, form), like the 
last. 
aéthe’os (4707s, unusual), in com- 
pounds = unusual; aétheogam’ic, 
aétheog’amous (ydyos, marriage), 
synonymous with cryptogamic. 
aethe’reus (Lat.), aérial. 
Aetiology (atriov, cause; déyos, dis- 
course), the doctrine of the cause 
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. 
7 
affix’ed (affix’us, fastened to), fixed 
upon. 
Ag’amae (a, without, ydéuos, marriage) 
= Cryptogamae ; agam’ic, ag’amous, 
Necker’s term for cryptogamous ; 
Agamogen’esis (yéveois, origin), 
asexual reproduction by buds, 
gemmae, etc.; Agamophy’ta (purdv, 
a plant), C. Macmillan’s term for 
protophytes; Agam/’ospore (o7opa, 
a seed), a spore or gonidium pro- 
duced asexually. 
A’gar, 4 gelatinous product from 
Agar-agar, or Agal-agal, which 
consists of various marine Algae 
from tropical Asia; also called 
“Ceylon Moss” and ‘Bengal 
Isinglass.” 
Agar’ic 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. 
ageglom’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 » polycarpellary 
apocarpous gynaecium; Aggre- 
ga’tion, condensation of cell-con- 
tents under some stimulus. 
agrarian (agrar’ius, pertaining to 
