Hypoxanthin 



imbricated 



(valva, a door), the valve of the 

 inner "shell" or Hypotheca of a 

 Diatom (0. Mueller) ; Hypoxan'thin 

 (av06s, yellow), a substance akin to 

 xanthin, which has been found in 

 germinating seeds. 



Hyp'sophyll (ii^i, high, aloft, 0iy\\oc, 

 a leaf), a bract of the inflorescence, 

 a reduced or modified leaf towards 

 the upper end of a shoot, </'. 

 CATAPHYLL ; Germ. Hochblatt ; 

 aypsophyl'lary, relating to bracts ; 

 <-- Leaf, a bract. 



hys'ginus (vvyivov). a red colour, or 

 dark reddish pink. 



hysteran'thous, -thus, -this (vcrrepos, 

 following, avdos, a flower), used of 

 leaves which are produced after the 

 flowers, as in the Almond ; 

 hysterogen'ic (ytvos, race, offspring), 

 used of intercellular spaces which 

 are formed in the older tissues ; 

 Hys'teropnyme (00/ua, a tumour or 

 excrescence), elementary organs 

 which have been mistaken for in- 

 dependent animal or vegetable 

 organisms (H. Karsten) ; hystero- 

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

 Hys'terophyte, a plant which lives 

 upon dead matter ; a saprophyte. 



ianth'inus (lavQwos, violet colour), 

 bluish purple, violet. 



iced, having a glittering papillose 

 surface, as Mesembryanthemum 

 crystattinxm, Linn. 



I'cones, pi. (icon, elx&v, a figure), 

 pictorial representations of plants, 

 botanic figures. 



icosahed'ral (d'/coc-t, twenty, eSpa, a 

 seat or base), having twenty sides, 

 as the pollen grains of Trayopoyon ; 

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

 dvdpbs, 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 (lurfpiKos, jaun- 

 diced), the colour of a person 

 suffering from jaundice, impure 

 yellow. 



Id (t'5??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 (etSos, like), a suffix in 

 Greek compounds denoting similar, 

 c/. -O-IDES. 



Idle-blast (i'Stos, personal, peculiar, 

 fiXaffTos, 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 PAN GEN, 

 a unit of hereditary substance ; 

 idiog'ynus J (yvvrj a woman), not 

 having a pistil ; Id'ioplasm (irXdfffJui, 

 moulded), Naegeli's term for the 

 active organic part of the proto- 

 plasm ; idiothal'amous, idiothal'a- 

 miift, (da\a/j.os, a bedroom), having 

 different colouration from the 

 thallus, a term in lichenology ; 

 Idiomorph'osis (/j.6p<pwcris, a shap- 

 ing), a special kind of metamor- 

 phosis, as the petals of Camellia, 

 from bundles of stamens, or peta- 

 loid sepals of Pofygala (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. 



Imbibition (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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