INDEX AND GLOSSARY 



265 



Germination, 9 ; conditions, 19 ; heat of 



(Exp. 8), 10 ; influence of temperature, 11 ; 



of Horse-chestnut, 22 ; time required, 247. 

 Gibbous. Protuberant or swollen on one 



side. 

 Glabrate. Somewhat glabrous, or becoming 



glabrous. 

 Glabrous. Smooth; not rough, pubescent, 



or hairy. 

 Gland. A secreting surface or structure ; 



any protuberance or appendage having the 



appearance of such a structure. 

 Glandular. Bearing glands or of the nature 



of a gland. 

 Glaucous. Covered or whitened with a 



bloom. 



Glochidiate. Barbed at the tip. 

 Glomerate. Compactly clustered. 

 Glomerule. ~ A cymose head. 143. 

 Glutnaceous. Furnished with or resembling 



glumes. 



Glume. One of the chaffy bracts of the in- 

 florescence of Grasses. 

 Granular. Composed of small grains. 

 Grit cells, 220. 

 Growth and reproduction, 174 ; annual, 33 ; 



conditions, 239 ; fluctuations, 239 ; grand 



period, 239; of stems, 52; phases, 238; 



of root (Exp.), 35. 

 Guard cells, 228. 

 Guttation (Exp.), 35, 249. 

 Gymnospermous. Bearing naked seeds, 



without an ovary. 

 Gymnosperms (Coniferce), 102; pistils of, 



106. 

 Gynandrous. Having the stamens borne 



upon the pistil, as in Orchidaceae. 134. 

 Gynobase. An enlargement or prolongation 



of the receptacle bearing the ovary. 

 Gynoaciuin, 109. 



Habit. The general appearance of a plant. 



Halophytes, 65. 



Hastate. Like an arrow head, but with the 



basal lobes pointing outward nearly at 



right angles, 93. 



Heliotropism, 240 ; (Exp.), 49, 68. 

 Herb. A plant with no persistent woody 



stem above ground. 

 Herbaceous. Having the characters of an 



herb ; leaflike in color and texture. 

 Herbaria, 253. 

 Heterocyst, 170. 



Heterogamous. Bearing two kinds of flowers. 

 Hilum. The scar or point of attachment of 



the seed. 137,153. 

 Hirsute. Pubescent w!th rather coarse or 



stiff hairs. 

 Hispid. Beset with rigid or bristly hairs or 



with bristles. 



Hispidulous. Minutely hispid. 

 Homogamous. Bearing but one kind of 



flowers. 



Hormogonia, 171. 

 Horsetail (Equisetum), 167. 



Hyaline. Transparent or translucent. 



Hybrid. A crossbreed of two species. 



Hydnum, 195. 



Hydrophytes, 65. 



Hydrotropism (Exp.), 85, 240, 249. 



Hymenium, 191, 195. 



Hypha, 183. 



Hypogynous. Situated on the receptacle be- 

 neath the ovary and free from it and from 

 the calyx ; having the petals and stamens 

 so situated. 130, 134. 



Imbricate. Overlapping, either vertically or 

 spirally, where the lower piece covers the 

 base of the next higher, or laterally, as in 

 the aestivation of a calyx or corolla, where 

 at least one piece must be wholly external 

 and one internal. 139. 



Immersed. Growing wholly under water; 

 wholly covered by the involucral leaves, as 

 sometimes the capsule in Hepaticae. 



Imperfect (flower), 128. 



Incised. Cut sharply and irregularly, more 

 or less deeply. 95. 



Included. Not at all protruded from the 

 surrounding envelope. 



Incomplete (flowers), 129. 



Incubous (leaf). Having the tip or upper 

 margin overlapping the lower margin of 

 the leaf above. 



Incumbent (cotyledons). Lying with the 

 back of one against the radicle. 



Indefinite (stamens). Inconstant in number 

 or very numerous. 



Indehiscent. Not opening by valves, etc. ; 

 remaining persistently closed. 148. 



Indigenous. Native and original to the 

 country. 



Induplicate. Valvate with margins project- 

 ing inwards. 138. 



Indurated. Hardened. 



Indusium, 205. 



Inequilateral. Unequal-sided. 



Inferior. Lower or below; outer or ante- 

 rior. Inferior ovary: one that is adnate 

 to the calyx, 130. 



Inflated. Hollow and distended. 



Inflorescence. The flowering part of a plant, 

 and especially the mode of its arrange- 

 ment. 101, 139. 



Innate (anther), 135. 



Insectivorous plants, 86. 



Inserted. Attached to or growing out of. 



Integuments (teguments), 137. 



Intercrossing, agencies, 120. 



Internode. The portion of a stem between 

 two nodes. 



Intramarginal. Within and near the margin . 



Introrse. Turned inward or toward the 

 axis. 136. 



Involucel. A secondary involucre, as that of 

 an umbellet in Umbelliferae, 142. 



Involucellate. Having an involucel. 



Involucral. Belonging to an involucre. 



Involucrate. Having an involucre. 



