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GLOSSARY OF BOTANICAL TERMS. 



Herbarium. — A collection of dried plants 

 arranged for study. 



Heem. phrodite. — Applied to flowers that 

 possess both stamens and pistils. 



Hesperidium. — A glandular-rinded berry, 

 such as the orange, lemon, etc. 



Heterocarpous. — Producing different 

 kinds of fruits. 



Heterocyst. — Applied to the large cells 

 occurring at intervals in the filaments of 

 the Nostocaceae. 



Hetercecious. — Applied to a plant like 

 Puccinia graminis, which spends a portion 

 of its life on one host and then another 

 portion, in a different form, on another 

 host. 



Heterogamous. — Producing more than one 

 kind of flowers. 



Heteromerous. — Applied to the organs or 

 parts of a flower when they do not corre- 

 spond in number. Heteromerous Lich- 

 enes are those which have the algal and 

 fungal elements in different layers. 



Heteromorphous. — Having flowers of dif- 

 ferent forms as regards the size or relative 

 position of the essential organs. 



Heterophyllous. — Having leaves of differ- 

 ent shapes. 



Heterostemenous. — Having stamens of 

 different forms. 



Heterosporous. — Producing more than 

 one kind of asexual spore. Applied to 

 those vascular cryptogams which produce 

 both macrospores and microspores on the 

 same plant. 



Heterostyled. — Applied to hermaphro- 

 dite flowers, when in the same species 

 different flowers have styles of different 

 length. 



Hexamerous. — Consisting of six parts or 

 members. Applied to a flower that is 

 constructed on the numerical plan of six. 



Hexandrous. — Possessing six stamens. 



Hexapetalous. — Possessing six petals. 



Hexasepalous. — Possessing six sepals. 



Hilum. — The point of attachment of an 

 ovule or a seed to its funiculus, or if ses- 

 sile, to the placenta. 



Hip. — The peculiar aggregated fruit of the 

 Rose. , 



HippoCREPiform. — Shaped like a horse- 

 shoe. 



Hirsute. — Covered with rather stiff, coarse 

 hairs. 



Hispid. — Bristly. Beset with rigid, spread- 

 ing hairs. 



Histology. — The science of the minute 

 structure of an organism. 



Homocarpous. — Having fruits all of one 

 kind. 



Hoary. — Grayish-white in color. 



Homogamy. — When hermaphrodite flowers 

 mature their stigmas and anthers at the 

 same time. 



Homoiomerous. — Made up of similar parts. 

 A term applied to those Lichens which 

 have the algal elements of the thallus 

 about equally dispersed among the fungal 

 elements. 



Homologous. — Having the same essential 

 nature or belonging to the same type ; 

 e. g., petals, ordinary leaves and bud- 

 scales are homologous organs. 



Homomorphous. — Applied to organs or 

 parts that have the same form. 



Homosporous. — Producing but one kind of 

 asexual spores. (See Heterosporous). 



Homoystyled. — Applied to hermaphrodite 

 flowers when all those in the same species 

 have styles of about equal length. 



Hybrid. — A cross between two species. 



Hydrophilous. — Applied to flowers that 

 are pollinated by the agency of water- 

 currents. 



Hydrophyte. — A water-plant. 



Hygroscopism. — The property of absorb, 

 ing moisture or of swelling or undergo- 

 ing change of form by reason of absorbing 

 moisture. 



Hydrotropism. — The property possessed 

 by some roots of bending toward water. 



Hymenium. — The layer of spore-bearing 

 cells in or on a sporocarp. 



Hymenophore. — The part of a fungus bear- 

 ing the hymenium. 



Hypha. — A thread-like chlorophylless, usu- 

 ally branching body, which grows api- 

 cally and usually becomes divided into 

 cells by the formation of transverse septa, 

 and constituting a part of the thallus of a 

 Fungus. 



Hypocotyl. — That portion of the embryo 

 stem situated below the cotyledons. 



Hypocotylbdonary. — Below the coty- 

 ledons. 



Hypocrateriform. — Salver-shaped. Ap- 

 plied to corollas and calyxes. 



Hypoderma. — The colorless cells immedi- 

 ately under the epidermis of leaves. Also 

 applied to the external portion of the cor- 

 tex immediately under the epidermis of 

 stems. 



