XXIV 



GLOSSARY OF BOTANICAL TERMS. 



Habit, the general external appear- 

 ance of a plant, by which it is 

 known at sight. 



Habitat or /uibitatis, the natural or 

 native place of growth. 



Hamate, hooked, a bristle curved at 

 the end. 



Hastate, shaped like a halbert; it 

 differs from arrow-shaped in hav- 

 ing the barbs or lateral portions 

 more distinct and divergent. 



Head, a dense roundish cluster of 

 sessile flowers. 



Helmet, see Galea. 



Herbaceous or kerb, not woody. 



Heterocephalous flowers, staminate 

 and pistillate in distinct heads ; as 

 in Ambrosia. 



Heterogamous heads, containing flow- 

 ers of different structure and sexual 

 character. 



Heterophyllous, having leaves of dif- 

 ferent forms. 



Hilum, 167. 



Hirsute, rough with soft hairs. 



Hispid, rough with stiff hairs. 



Hoary, covered with white down. 



Homogamous heads, containing flow- 

 ers of a similar structure and the 

 same sexual character. 



Hooded, see Cucullate. 



Horn, see Spur. 



Hybrid, a mongrel, or partaking of 

 the nature of two species. 



Hypocrateriform, salver-shaped, with 

 a tube abruptly expanded into a 

 flat border. 



Hypogynous, 93. 



Imbricate or imbricated , lying over 

 each other like scales, or the shin- 

 gles of a roof. 



Imperfect flower, one in which either 

 stamens or pistils are wanting. 



Incised, cut, separated by incisions. 



Included, wholly received or con- 

 tained in a cavity, the opposite of 

 exserted. 



Incomplete flower, one which is des- 

 titute of calyx or corolla. 



Incrassatsd, thickened upward, larger 

 toward the end. 



Incumbent, lying against or across, 

 181. 



Incurved, bent or curved inwards. 



Indefinite, numerous, and of no con- 

 stant number. 



Indehisccnt, not opening. 



Indigenous, native, growing natu- 

 rally in a country. 



Indusium, the involucre or veil which 

 covers the fruit of ferns. 



Inferior, lowermost. 



Inflated, blown up like a bladder. 



Inflexcd, bending inwards. 



Inflorescence, 59. 



Infundibulifarm, funnel-shaped. 



Inserted into, growing out of. 



Internode, the space between joints , 

 as in Grasses. 



Interrupted, having intervals, or the 

 continuity broken. 



Interruptedly pinnate, when smaller 

 leafets are interposed among the 

 principal ones. 



Introse anthers, having the cells 

 turned inwards or towards the 

 pistils. 



Involucel, a partial involucre, 53. 



Involucre or involucrum, 53. 



Involute, rolled inwards. 



Irregular, the component parts dif- 

 fering in size and shape. 



Keel, 81. 



Keeled, shaped like a keel. 

 Kidney-shaped, heart-shaped without 

 the point, and broader than long. 



Labiate, 80. 



Lacerate, divided into irregular seg- 

 ments, as if torn. 



Laciniatc, cut or divided into seg- 

 ments. 



Lactescent, milky ; yielding a whitish 

 or milky juice, when cut. 



Lacunose, covered with little pits or 

 depressions. 



Lameltated, in thin plates. 



Lamina, a thin layer or plate ; the 

 flat portion of a leaf or petal, as 

 distinguished from the petiole or 

 claw. 



Lanceolate, spear-shaped, narrow, 

 with both ends acute. 



Lance-linear, Lance-ovate, &c., lin- 

 ear, ovate, &c., with something of 

 the lanceolate form. 



Lanuginous, woolly. 



Lateral, at the side. 



Lax, loose, not compact. 



Leafet, a partial leaf, a constituent 

 of a compound leaf. 



Legume, 151. 



