372 GLOSSARY 



Indehiscent, not naturally splitting open when ripe. 



Inferior, of an ovary so retarded in development that the calyx-tube or 



floral axis, bearing the insertions of petals and stamens with it, 



grows up and over it. 



Inflorescence, the floral branch-system, p. 8. 



Innate, of an anther with the filament inserted merely into its base. 

 Integument, a cell-layer covering the nucellus of the ovule. 

 Internodes, the stretches of shoot between the nodes, p. 46. 

 Interrupted, the order destroyed by the interposition of dissimilar organs, 



p. 27. 



Intine, the inner membrane of the pollen-tube. 

 Introrse, of an anther so turned as to face the floral axis. 

 Involucre, the bracts crowded, or at one level, round the base of a capi- 



tulum, umbel, &c., p. 24. 



Involute, with both margins rolled inwards towards the midrib, p. 322. 

 Irregular, with disturbance in the symmetrical radial arrangement of 



the parts. 



Irritable, responding to touch, &c., by movements, p. 284. 

 Isobilateral, capable of division in two planes into symmetrical halves. 

 Isostemonous, with stamens equal in number to the lobes of the corolla, &c. 

 Keel, the boat-shaped pair of basal petals in a papilionaceous flower. 

 Laciniate, cut into a fringe at the margin, p. 199. 

 Lamellated, layered. 

 Lamina, the blade of a leaf, p. 286. 

 Lanceolate, narrow and tapering to both ends, p. 203. 

 Lateral plane, the section of a lateral flower parallel to the earth's sur- 

 face, p. 123. 



Latex, milk-like juice, p. 229. 

 Leafy raceme, with the bracts so little different from ordinary leaves 



that the flowers appear singly in the leaf-axils, p. 18. 

 Legume, the monocarpellary pod of the Papilionaceas and their allies. 

 Ligulate, provided with ligules. 



Ligule, membranous appendages at the junction of limb and claw, p. 207. 

 Limb, the broad part or lamina of a petal, &c. 

 Linear, narrow, with parallel edges. 

 Lip, one of the large lobes of a labiate corolla. 

 Lobed, cut into segments too large to be termed teeth, p. 203. 

 Loculi, cavities in an anther or ovary, containing the pollen or ovules 



respectively. 



Loculicidal, splitting along the dorsal walls of the loculi, p. 335. 

 Lyrate, lyre-shaped. 



Macrospore, the larger of the two spores found in certain Cryptogams. 

 Male, flowers containing stamens only, denoted shortly by the sign <$ , 



p. 25, 



