Hypoxanthin 



imbricated 



(valva, a door), the valve of the 

 ' inner " shell " or Hypotheca of a 

 Diatom (0. Mueller) ; Hypoxan'thin 

 (cu>06s, yellow), a substance akin to 

 xanthin, which has been found in 

 germinating seeds. 



Hyp'sophyll (u^t, high, aloft, ^tfXXoj', 

 a leaf), a bract of the inflorescence, 

 a reduced or modified leaf towards 

 the upper end of a shoot, cf. 

 CATAPHYLL ; Germ. Hochblatt ; 

 hypsophyl'lary, relating to bracts ; 

 ~Leaf, a bract. 



hys'ginus (ti<ry<.i>oj>), a red colour, or 

 dark reddish pink. 



hysteran'thous, -thus, -this (&rre/>os, 

 following, &t>6os, a flower), used of 

 leaves which are produced after the 

 flowers, as in the Almond ; 

 hysterogen'ic (7^0?, race,. offspring), 

 used of intercellular spaces which 

 are formed in the older tissues ; 

 Hys'terophyme (00/xa, a tumour or 

 excrescence), elementary organs 

 which have been mistaken for in- 

 dependent animal or vegetable 

 organisms (H. Karsten) ; hystero- 

 phy'tal (<t>vrov t a plant), fungoid ; 

 Hys'terophyte, a plant which lives 

 upon dead matter ; a saprophyte. 



ianth'inus (lavdivos, violet colour), 

 bluish purple, violet. 



iced, having a glittering papillose 

 surface, as Mesembryanthemum 

 crystallinum, Linn. 



I'cones, pi. (icon, ekcbv, a figure), 

 pictorial representations of plants, 

 botanic figures. 



icosahed'ral (efro<ri, twenty, tSpa, a 

 seat or base), having twenty sides, 

 as the pollen-grains of Tragopogon ; 

 icosan'der, icosan'drous, -rus (dt^p, 

 avdpbs, a man), with twenty or 

 more stamens ; Icosan'dria, a Lin- 

 nean class of plants with twenty 

 stamens or more inserted on the 

 calyx. 



icter'icus, icteri'nus (t/n-e/n/cos, jaun- 

 diced), the colour of a person 

 suffering from jaundice, impure 

 yellow. 



Id (I5i)s, suffix implying paternity), 



an hereditary unit recognised in 

 granules and chromosomes ; I'dant, 

 a serial complex of ids, Weismann's 

 term for CHROMOSOME. 



Identification, used for Determination 

 (Crozier). 



-i'des, -ideus (elSos, like), a suffix in 

 Greek compounds denoting similar, 

 cf. -O-IDES. 



Id'ioblast (i'oto?, personal, peculiar, 

 jSXaoros, a bud or shoot), (1) a 

 special cell in a tissue which 

 markedly differs from the rest in 

 form, size, or contents, as the 

 " stellate -cells " in Nymphaea ; 

 (2) used by Hertwig for PANGBN, 

 a unit of hereditary substance ; 

 idiog'ynus J (yvvtj a woman), not 

 having a pistil ; Idioplasm (TrXaoyta, 

 moulded), Naegeli's term for the 

 active organic part of the proto- 

 plasm ; idiothal'amous, idiothcd'a- 

 rmis, (6d\a/j,os, a bedroom), having 

 different colouration from the 

 thallus, a term in lichenology ; 

 Idiomorph'osis (/iop0w<r ts , a shap- 

 ing), a special kind of metamor- 

 phosis, as the petals of Camellia, 

 from bundles of stamens, or peta- 

 loid sepals of Polygala (Delpino). 



ig'neus (Lat., fiery), flame-coloured, 

 used for combinations of red and 

 yellow, or brilliant in tone. 



ignia'rius (Lat., pertaining to fire), 

 of the consistence of German tin- 

 der, derived from puff-balls. 



illegitimate, fertilization in dimor- 

 phic or trimorphic flowers so termed, 

 when occurring between parts of 

 diverse length, as long with short, 

 etc. 



imberb'is (Lat. ), beardless, devoid of 

 hairs. 



Imbibit'ion (imbibo, I drink in), the 

 act of imbibing ; ~ The'ory, Sachs's 

 suggestion that water ascends in 

 plants by a chemical process in the 

 cell-walls, and not by actual pas- 

 sage upwards by vessels. 



im'bricate, imbrica'ted, imbrica'tus 

 (Lat., covered with gutter tiles), 

 (1) overlapping as the tiles on a 

 roof; (2) in aestivation, used of a 



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