224 GLOSSARY OF BOTANICAL TERMS. 



GLAND, a secreting organ often raised above the surface, some- 

 times internal. 



GLANDULAR HAIRS, hairs tipped with a gland. 

 GLANS or NUT, the fruit of the oak; acorn. 

 GLAUCOUS, a bluish green mingled with white, as the bloom on 



the ripe plum or grape. 

 GLOBOSE, round or spherical. 

 GLOMERULE, a small rounded cyme in which the flowers are close 



together. 

 GLUMELLAS, the inner scales inclosing the stamens and pistil in 



grasses. 

 GLUMES, the outer scales of the spikelet in Grasses; the scales of 



the Sedges including the flowers. 

 GLUTINOUS, viscid, adhesive. 

 GRANULATED, having a rough surface of small projecting points 



or grains. 

 GYMNOSPERMS, plants in which the pollen comes in immediate 



contact with the naked ovule without the intervention of 



style or stigma, as in the Coniferce. 

 GYNANDROUS, stamens and pistil united in a column. 

 GYNOPHORE, a stalk bearing the ovary above the calyx. 



HABIT, the general bearing or aspect of a plant. 



HAIRS, fine conical expansions of the epidermis. 



HASTATE, halbert -shaped, furnished at the base with two diver- 

 gent lobes. 



HEAD, flowers coll ected closely together, surrounded by an involucre . 



HELMET, the hooded or arching upper part of a corolla. 



HERBACEOUS, the green succulent parts of plants which are not 

 woody; usually applied to plants the steins of which die 

 annually. 



HERMAPHRODITE, stamens and pistil in the same flower. 



HESPERIDIUM, the fruit of the orange. 



HETEROCHROMOUS, when the ray is of a different colour from the 

 disk, as in Beltis. 



HETEROGAMOUS, when the florets of the disc are perfect, and those 

 of the ray female or neuter. 



HILUM, a scar on the base of the seed, left by the breaking away 

 of the funiculus or podosperm. 



HIRSUTE, having long distinct hairs. 



HISPID, having strong stiff hairs. 



HISTOLOGY, the microscopic study of tissues. 



HOMOCHROMOUS, when all the florets are of one colour, as in 

 Leontodon. 



HOMOGAMOUS, when all the florets are perfect, as in Leontodon. 



HOMOTROPOUS, an erect embryo. 



HOODED, the arching upper part of a petal. 



HYBRID, a mule, produced by the crossing of two species belong- 

 ing to one genus. 



