Hydrolist 
Hypanthodium 
of tannin, oxalates, colouring 
matter, or aleurone; Hy’drolist, 
cf. CYTOHYDROLIST, PRoTEoHY- 
DROLIST ; Hy’drome, the hydral or 
water-system of a vascular bundle, 
cf. HADROME ; Hydroph'ilae (giAéw, 
I love), water-pollinated plants; 
hydroph’ilous, some aquatic Phan- 
erogams, and many Cryptogams 
which need water in order to be 
fertilized ; ~ Fun’gi, refers to those 
Fungi which are allied to Sapro- 
legnia ; Hy’drophytes, Hydrophy’ta 
(gurov, a plant), water-plants, 
partially or wholly immersed ; 
Hydrophytol’ogy (Adyos, discourse), 
a treatise on water-plants ; Hy’dro- 
plast (7Aacros, moulded), an ap- 
parent vacuole in which aleurone- 
rains arise; Hydrople’on (m)éor, 
ull, = an aggregate of molecules, 
but smaller than a micella), water 
of crystallization; Hydrot’rophy 
(rpo¢7, food), unequal growth 
caused by unequal supply of 
moisture on one side of a part 
(Wiesner) ; Hydrot’ropism (rporn, a 
turning), the phenomena induced by 
the influence of moisture on growing 
organs; pos’itive ~, turning towards 
the source of moisture ; neg’ative ~, 
turning away from moisture. 
hy’emal, hyema’' lis (hiems, winter) 
HIEMALIS, pertaining to winter. 
hygrochas'tic (vypds, moist, xacudw, 
I yawn), applied by Ascherson to 
those plants in which the bursting 
of the fruit and dispersion of the 
spores or seeds is caused by ab- 
sorption of water, as in Anastatica 
hierochuntica, Linn. ; Hygroch’asy, 
the act in question ; Hy’drochrome 
(xp@pa, colour), used by Nadson 
for the pigments of Russia and 
Amanita Muscaria, Fr.; hygro- 
metric (uérpov, a measure), moving 
under the influence of more or less 
moisture, hygroscopic; hygro- 
ph’anous (¢alvw, I appear), looking 
watery when moist, and opaque 
when dry (Cooke); Hy’grophytes 
(gurov, a plant), marsh-plants, or 
plants which need a large supply 
128 
Hypan’thium, 
of moisture for their growth; 
Hy’groplasm (mAdoya, moulded), 
Nageli’s term for the fluid 
portion of protoplasm, cf. STEREO- 
PLASM; hygroscop’ic (cxoréw, I 
see), susceptible of extending or 
shrinking on the application or 
removal of water or vapour; ~ 
Cells, certain cells in the leaves 
of grasses which cause them to 
alter in shape in dry weather, 
known also as bulliform cells; 
Hygroscopic'ity, Hygroscopic'itas, 
the hygroscopic property. 
Hy’lophyte (iy, a wood, ¢urov, a 
plant), a plant which grows in 
woods, usually moist ; adj. hylo- 
phytic. 
Hy’lus, Hy’lum = Hitvum. 
Hy’men (‘ulv, a membrane), a skin 
or membrane; hyme’‘nial (1) per- 
taining to the Hymenium; (2) 
relating to the reproductive organs 
in certain Cryptogams; ~ Al'ga, 
the algal cell in a sporocarp in 
Lichens, also termed ~ Gonid’ium ; 
~ Lay’er = HYMENIUM ; Hyme’nium, 
an aggregation of spore mother- 
cells in a continuous layer on a 
sporophore, the sporiferous part 
of the fructification in Fungi; 
hymeno’des (e?dos, like), having a 
membranous texture; Hymeno- 
lichen (+ Lichen), a term devised 
by Mattirolo for a Lichen which is 
symbiotically associated with a 
hymenomycetous Fungus ; hymeno- 
myce’tous (uixys, a mushroom), 
having the hymenium exposed at 
maturity, the spores borne on 
basidia ; Hy’menophore, Hymeno- 
phor'ium (popéw, I carry), in Fungi 
that part which bears the hymen- 
ium, the sporophore; Hy’meno- 
pode, Hymenopod'ium (rots, rodes, 
a foot), Fayod’s name for the hypo- 
thecium ; Hyme’nulum, a disk or 
shield containing asci, but without 
an excipulum. 
Hyoscy’amin, an alkaloid contained in 
Henbane, Hyoscyamus niger, Linn. 
Hypantho’dium (iro, 
under, av@os, a flower), an enlarge- 
