226 GLOSSARY OF BOTANICAL TERMS. 



KIDNEY- SHAPED, heart-shaped, with the apex rounded. 

 KNEE, bent like the knee-joint. 



LABELLUM, LABEL, the lower lip in Orchids. 

 LABIATE, LIPPED, flowers having two lips. 

 LACINIATED, irregularly cut into narrow segments. 

 L^EVIS, smooth, even. 

 LAMELLA, little plates. 



LAMINA, the limb or blade of a leaf, petals, &c. 

 LANATE, woolly. 



LANCEOLATE, a spear-shaped leaf, narrowly elliptical, and gra- 

 dually tapering to each end. 

 LATERAL, placed on the side, not in the middle. 

 LATEX, the elaborated contents of the laticiferous vessels. 

 LAX, loosely arranged, not compact. 

 LEAFLETS, the lesser divisions of compound leaves. 

 LEGUME, a single one-celled carpel, seeds arranged on the ventral 



margin, dehiscing by the dorsal and ventral sutures. 

 LENTICELS, small brown rugose markings on the epidermis of some 



stems. 



LENTICULAR, having the form of a double convex lens. 

 LEPIS, a scale. 

 LIBER, the inner layer of the bark composed of fibrous tissue. 



Enclophleum. 



LIGNINE, the woody matter which thickens the cell-wall. 

 LIGULATE, strap-shaped, a floret with parallel sides, as in the 



Dandelion. 



LIGULE, a membrane at the top of the sheath in grasses. 

 LIMB, the flat part of a leaf or petal. 

 LINEAR, long and narrow, with parallel sides. 

 LOBE, the division of a leaf or other organ. 

 LocuLAMENTy a cavity in an ovary. 



LOCULICIDAL, fruit opening through the back of a carpel. 

 LOMENTUM, a kind of legume or pod which, when ripe, breaks off 



at the joints. 



LUNATE, crescent-shaped, or like the new moon. 

 LYRATE, a pinnatificl leaf with the terminal lobe large, and the 



rest successively smaller. 



MARCESCENT, when withered not falling off. 



MED ULLARY- RAYS, plates of murifo rm cellular tissue connecting 



the pith and the bark. 

 MEDULLARY-SHEATH, a ring of spiral vessels surrounding the pith 



or medulla. 



MEMBRANOUS, thin and flexible as in a membrane. 

 MERICARP, the one-half of the fruit in Umbelliferce. 

 MESOCARP, the middle portion or fleshy part of the plum, 



cherry, c. 

 MESOCHILIUM, the middle portion of the labellum in Orchids. 



