GLOSSARY 721 
G.iume.—A floral bract of the grasses and sedges. 
Guvu’TEN.—The proteid matter of cereals. 
Gonip’tum.—Applied to the algal cell in lichens as well as to many forms of asexual 
reproductive bodies in flowerless plants. 
Gon’opHOoRE.—An upgrowth of the receptacle between the corolla and stamens, 
as in Passiflora. 
Guarp CE.is.—The pair of special epidermal cells which surround the pore of the 
stoma. 
Gyn’czci'uM.—The female sexual system of a flower. 
Gyn’oPpHORE.—An upgrowth of the receptacle between gyncecium and androecium, 
as in Geum. 3 
Gynoste’m1um.—The united stamens and style. The column of orchids. 
Has’1rat.—The original home of a plant. 
Ha’/prRomME.—The conducting tissue of the xylem, comprising trachez, tracheids and 
wood parenchyma. 
Has’tATE.—Shaped like the head of a halberd, the basal lobes diverging. 
HeaAp.—An indeterminate form of inflorescence, as seen in the Daisy family, in 
which the flowers are in a dense cluster on the receptacle. 
HEART’ woop.—The inner portion of the wood, often containing resinous and color- 
ing matters and which no longer functions in the vegetative processes of the 
plant. 
He iorT’ropisM.—Response to the stimulus of sunlight. 
Hersa’rium.—A classified collection of dried plant specimens. 
Herep'1ry.—The faithful transmission of characters from parent or parents to 
offspring. : 
HeERMAPH’RODITE.—Applied to flowers which contain both sets of essential organs, 
not necessarily functionally active. 
Hesperiw’1um.—A large, thick-skinned, succulent fruit like the orange, lemon or 
grape-fruit. 
Her’erocyst.—A cell of different size and content from other cells in the filaments 
of Nostoc and some other blue-green algz. 
HeETEROPHYL’Lous.—Having more than one kind of foliage-leaves on the same 
plant. 
HeETEROs’PoROus.—Producing asexual spores of more than one kind, as in Selagi- 
nella and the rusts. 
HeterorypP’ic.—Applied to the first cell division in meiosis which involves the 
reduction of the chromosomes from the diploid to the haploid member. 
HeEtTERozy’GOTE.—An organism to which its two parents have contributed unlike 
genes with respect to any given allelomorphic pair governing contrasted charac- 
ters, and which in turn produces two kinds of germ cells with respect to the 
characters. 
Hex.—A prefix of Greek origin meaning six. 
Hexac’ynous.—Having six carpels or styles. 
Hexam’Eerous.—Having the parts of the flower in 6’s. 
HeExAN’pRovus.—Having six stamens. 
Hiserna’TIoN.—Passing the winter in a dormant state of existence. 
Hi'Lum.—The scar of a seed, after the stalk of the ovule has fallen off. Also applied 
to the point of origin or growth of a starch grain. 
