722 PHARMACEUTICAL BOTANY 
Hip.—The fruit of a Rose, consisting of a number of akenes surrounded by a ripened 
concave receptacle. 
Hirsute’.—Covered with numerous long coarse hairs. 
His'prp.—Beset with erect stiff hairs, as Borage. 
Hisro.’ocy.—The study of tissues with the aid of the microscope. 
Ho.prast.—The base of the stipe or of the plant body of a thallophyte which is 
differentiated for attaching the plant to its substratum. 
Homo ’ocous.—Having the same structural nature, 
Homos’Pporous.—Producing asexual spores of only one kind. 
Homozy’cote.—An organism whose parents contributed to it a similar member of 
any given pair of genes and whose germ cells are all alike with respect to the 
genes for that character. 
Hormocon’1um.—A segment of a filament of a blue-green alga which may detach 
itself from the rest of the filament becoming a new organism. 
Hy’srip.—A cross between two varieties or species, rarely between two genera 
of the same family. 
Hypatn’oprs (Water Pores).—Organs for the exudation of water from plants under 
conditions of low transpiration and abundant soil moisture. 
Hypropu'iLous.—Applied to flowers that are pollinated through the agency of 
water currents. 
Hy’propHyTe.—A water-plant. 
Hyprot’ropisM.—The response of a plant organ to the stimulus of moisture. 
Hycroscop’1c.—The property possessed by certain cells or substances of absorbing 
moisture with avidity. 
Hyme’nrum.—A spore-bearing membrane of a fungus. 
Hy’pua.—A filament of the mycelium of a fungus. _ 
Hypo.—A prefix of Greek origin meaning under. 
Hy’pocotyt.—That part of an embryo plantlet below the cotyledon or cotyledons. 
HypocraTER'IrorM.—Applied to a calyx or corolla when the tube is long and 
slender and abruptly expands into a flat limb. 
Hypoper’mis.—That portion of a plant organ directly beneath the epidermis. 
Hypoce’ous.—Beneath the surface of the soil. 
Hypotue’crum.—That portion of a thallus of a lichen directly beneath or around 
the apothecium. 
Hypoc’ynous.—Applied to the insertion of various floral parts on the receptacle 
and beneath the pistil. 
Ip’iosLast.—A cell which differs materially in form, size, character of cell wall, 
or contents from its neighbors in a tissue, frequently applied to colorless stone 
cells. 
Imsrsr’T10n.—The taking in of water by organic bodies in such a manner as to 
cause them to swell up. 
Im’sRIcATE.—Overlapping like shingles. 
ImMERsED’.—Growing entirely under water. - 
IMPARIPIN’NATE.—Applied to a pinnately-compound leaf terminating with a single 
leaflet. 
InDEF’INITE.—Applied to stamens and other organs of the flower, when too numer- 
ous to be conveniently counted. 
InDEHIs’cENT.—Not splitting open in a definite manner when ripe. 
InpIG’ENOus.—Native. 
