Initials 



(SUPPLEMENT) 



ixous 



Initials, the beginnings of tissues, 

 the early stages of cells or tissues, 

 as Dermat'ogen ~ , or Perlblem ~ . 



inophyllous (i's, bos, a nerve, 

 <pv\\ov, a leaf), with thread-like 

 veins in the leaf (Heinig). 



in'ops (Lat., destitute), poor, de- 

 ficient (Heinig). 



Inotag'mata, pi. (+ TAGMA), the 

 hypothetical contractile elements 

 of protoplasm (T. W. Engel- 

 mann). 



in'quinant (inquino, I stain), stained 

 or staining. 



interbiomor'ic (+ BIOMORE), em- 

 ployed to denote the condition of 

 HYALOPLASM ; interfo'liate, inter- 

 fo'liar (+ FOLIOLE), between the 

 leaves, or between the leaves and 

 some other structure; interproto- 

 plas'mic (+ PROTOPLASM) Spa'ces, 

 gaps in the reticulum of Myxo- 

 gastres ; intersem'inal, between or 

 amongst seeds, as scales on the 

 torus of Anthemis ; interspor'al 

 (<r7ro/)A, a spore), in a sporangium, 

 situated between the spores 

 (Harper) ; interplacen'tal ( -f PLA- 

 CENTA), between the placentas ; 

 applied to vascular bundles which 

 occur in the capsule; cf. ANTE- 

 PLACENTAL ; intertrop'ic ( + TRO- 

 PIC), relating to the torrid zone ; 

 within the tropics ; In'terzones 

 (+ ZONE) Bessey's term for the 

 portion of a Diatom frustule which 

 in some cases lies between the 

 girdle and the valves. 



in'tra-axil'lary ( + AXILLARY), within 

 the axil, as many leaf-buds ; in- 

 tracutic'ular (+ CUTICLE), within 

 the cuticle ; applied to parts or 

 organs whose normal position is 

 outside ; intrapal'ear ( + PALEA), 

 referring to the fertilization of 

 cereals which commonly takes 

 place within the flower, before the 

 exsertion of the anthers; intra- 

 sac'cal (+ SAC) employed of em- 

 bryos, arising outside the embryo- 

 sac ; intrastamin'eal (+ STAMEN), 

 within the stamens, as the disk of 

 Anacardiaceae. 



intromar'ginal, (+ MARGINAL), used 

 of a vein running just within the 

 outer margin of a leaf. 



Intumes'cence (intumescere, to swell- 

 up), any abnormal swelling on the 

 exterior of plants. 



Inva'sion, (invasus), an intrusion of 

 an alien plant into regions or 

 stations foreign to it. 



I'on (lov, neut. of luv, past part, of 

 elfjd, I go), a physical term, defined 

 by J. F. Clark as the division of a 

 molecule; adj. ionic; loniza'tion, 

 the partitioning of a molecule ; 

 ioui'zed, divided into ions. 



is'abelline, isabelli'nus (Isabella, 

 Queen of Spain), a greyish drab. 



isocot'ylous ( + COTYLEDON), having 

 equally developed cotyledons ; 

 Isodi'ode ( + DIODE), when all the 

 diodes produced are alike (Van 

 Tieghem) ; isog'onous (yovos, off- 

 spring), used of hybrids which 

 combine the parental characters 

 in equal degree (De Vries) ; cf. 

 ANISOGONOUS; isolat'eral (latus, a 

 side), employed by Heinricher for 

 " central " ; ~ Leaves, those which 

 possess palisade tissue on both 

 surfaces. 



Isola'tion (Fr., isolation, insulation, 

 from insida, an island), the pre- 

 vention of intercrossing between a 

 separated section of a species or 

 kind, and the rest of that species 

 or kind (Romanes). 



I'somorph (/XO/XTJ, shape), similar in 

 external form, but not in essential 

 structure ; a mineralogical term ; 

 Isomorphism, the condition de- 

 scribed, as exemplified by the out- 

 ward agreement of purple Crocus 

 and Colchicum ; isoph'agouB (<f>dyos, 

 a glutton), applied to parasitic 

 Fungi confined to one species 

 (Eriksson) ; ispphyllous (^uXXov, a 

 leaf), leaves alike, in shape or size ; 

 Isophytot'onus (<pvTov, a plant, 

 r6'os, strain), in temperature iden- 

 tical with the plant's requirements 

 (Clements). 



ix'ous (/6s, bird-lime), sticky, 

 viscous (Heinig). 



