Hypophyll 



liysginus 



of the leaf from which stipules 

 develop, adherent to the axis and 

 ultimately forming the leaf-scar ; 

 hypophyliop'odous {t6vs, a foot), 

 radical leaves present when flower- 

 ing, but not numerous ; used of 

 certain Hieracla ; cf. phyllopu- 

 Dous ; hypophyllous, -Iur {<pv\\ov, 

 a leaf), situated under a leaf, or 

 growing in that position ; Hy'po- 

 pliyse, ~ Cell = Hypoph'ysis {<pvoi, 

 i grow), the ceii from which 

 the priiuary root and root-cap 

 of the embryo in Angiosperms is 

 derived • adj. hypophyg'ial ; Hy'po- 

 plasy {nKdaao), I mould), defective 

 development due to insuffic ent 

 nourishment, and consequent cessa- 

 tion of growth (Kii^ter) ; adj. hypo- 

 plast'io ; Hypoplea'ra {ir\tvpa, a 

 rib), the inner half-girdle of the 

 frustule of a Diatom (0. Muel- 

 ler) ; Hypopod'ium (iroOj, iro8bs, a 

 foot), the sta,lk of a carpel ; hypo- 

 pro'teoid (+ i'hoteoid), used of 

 plants having sclerotic cells on 

 the lower surface of their leaves 

 (Vesque) ; Hypopter'ies + [vTephy, 

 a feather or win^')> ^ wing growing 

 from below, as the seed of a Fir- 

 tree ; hypoptera'tus, J having wings 

 produced from below ; Hyposath'ria 

 {<ra9phs, rotten), the state of secon- 

 dary ripening styled bletting, as in 

 medlars ; Hy'posperm {avepixa, a 

 seed), the lower part of an ovule or 

 seed, below the level where the in- 

 tegument becomes free from the 

 nucellus (F. \V. Oliver) ; Hypo- 

 sporan'giam (arvopii^ a seed ; iiyyfiov, 

 a vessel), the indusium of Ferns, 

 when proceeding from below the 

 sporangia. 



Hy'postase {vv6<rra<ri5, a support), a 

 disc of lignified tissue at the baise of 

 the ovule in certain orders (Van 

 Tieghem). 



Hypoit'asis {v'^h, under; ardaris, a 

 standing), (1) the suspensor of an 

 embryo ; (2) a unit- factor concealed 

 or inhibited (Bateson) ; adj. hypo- 

 static ; cf. Epistasis ; Hy'postate 

 = Hyposperm ; hypos tomat'io, 



hypostom'atous {+ Stoma), with 

 the stomata on the under surface; 

 Hypostom'iam, cells fofming the 

 lower portion of the stomiura of 

 the annulus of a rupturing 8i>oran- 

 gium in the Ferns ; Hypostro'iaa 

 {ffrpoifia, spread-out) (1) = My- 

 celium; (2) the stroma at the base 

 of the fructification only (Tra verso) ; 

 hjrpotet'rarch (-f tetrauch), in a 

 triareh stele, the division of the 

 median protoxylem ; hypothal'line 

 (daWhs, a young branch), relating 

 to the hypothallus or resembling 

 it ; hypothallin'ic, situated beneath 

 the thallus of a Lichen ; Hypo- 

 tharUum, Areschoug's term for the 

 basal rhizoidal layer in calcareous 

 Al>(ae ; Hypothal'lus, the m.arginal 

 outgrowth of hyphae in crustace- 

 0U8 Lichens ; Hypothe'ca {B-fiKv, a 

 case), the inner half- frustule of a 

 Diatom (0. Mueller) ; hypothe'cal, 

 belonging to the hyf»otheca of a 

 Diatom ; Ky'pothece = Hypothe'- 

 cium, a layer of hyplial-tissue 

 immediately beneath the hyinenium 

 in certain Cryptogams ; hjrpotri'arch 

 ( -f TKI auch), when in a triareh stele, 

 the median protoxylem group is 

 lowermost (Prantl) ; Hypot'rophy 

 {rpo<f>^, food), Wieisner's term when 

 the growth of cortex or wood is 

 greater on the lower side of the 

 branch ; also when buds or stipules 

 form on the loner side ; adj. hypo- 

 t'ropous ; Hypoval'va {valva, a door) , 

 the valve of the inner "shell" or 

 hypotheca of a Diatom (0. Mueller); 

 Hypoxan'thin {^audhs, yellow), a 

 substance akin to xanthin, which 

 has been found in germinating seeds. 



Kypsi'um, or Hypsi'on {u>i, high, 

 aloft), a succession of plants by 

 elevation (Clements) ; Hyp'sophyll 

 {(ftvWoyy a leaf), a bract of the in- 

 florescence, a reduced or modified 

 leaf towards the upper end of a 

 shoot ; cf. Catapiiyll ; Oer. Hoch- 

 blatt; hypsophyl'lary, relating, to 

 bracts; ~ Leaf, a bract. 



hys'ginus {v^ytvov), a red colour, or 

 dark reddish pink. 



192 



