GLOSSARY. 
XXI 
Joints; the spaces between the knots, nodes, or joinings ; the 
parts joined. 
Keel ; a prominent ridge. The two lower petals of a Pea- 
llower, within the others and united more or less by their 
anterior edge, form the keel. 
I Kneed ; bent like the knee. 
Knots ; the joinings or nodes of the stem in Grasses. 
Label ; the terminal segment of the lip in Orchids. 
Laciniate ; divided into narrow irregular lobes. 
Lanceolate ; narrowly elliptic and tapering to each end. 
Lancet-shajied ; shortly and bluntly lanceolate. 
Lax ; loosely arranged. 
Leaflets ; the subdivisions of compound leaves. 
Legume ; a one-celled and two-valved seed-vessel with the 
seeds arranged along the inner angle, as the pod of a Pea. 
Lenticular ; like a doubly convex lens. 
Ligulate ; strap-shaped ; not very narrow nor long, and with 
nearly parallel sides. 
Ligvle ; a membrane at the base of the limb of the leaf of 
Grasses. 
Limb 3 the flattened expanded part of a leaf or petal. 
Linear ; very narrow and long, with parallel sides until near 
the end. 
Lingulate ; tongueshaped j long, fleshy, convex, blunt. 
Li^rped ; applied to a corolla or calyx appearing to consist of 
two lips. 
Lobate ; lobed ; with large divisions. 
Loculicidal ; opening down the back (or luidrib) of the carpel. 
Loiver part of a floral whorl ; the furthest from the main axis ; 
anterior. 
Lunate ; shaped like the new moon. 
Lyrate ; a pinnatilid leaf with the lobes successively and 
gradually enlarging from the petiole, and ending in one 
still larger lobe. 
Marcescent ; fading but remaining in its place. 
Medullary ; relating to the pith. Medullary rays are plates 
of cells which connect the pith with the growing part 
next to the bark. 
Membranous ; of the texture of membrane ; thin and flexible. 
Mericarps ; the carpels of Umbelliferse. 
Midrib ; the large vein extending along the middle of a leaf 
from its petiole nearly or quite to the other end. 
Moniliform ; cylindrical but constricted at regular intervals. 
