Imbricate. Overlapping, like the shingles on a roof. 
Indeliscent. Not opening by valves or slits; remaining persist- 
ently closed. 
Indigenous. Native and original to a region. 
Inflorescence. The flowering part of a plant, and especially its 
arrangement. 
Internode. The portion of a stem between two nodes. 
Involucral. Pertaining to an involucre. : 
Involucre. A circle of bracts surrounding a flower or cluster 
of flowers. 
Keeled. With a central ridge like the keel of a boat. 
Laciniate. Cut into narrow, pointed lobes. 
Lanceolate. Lance-shaped, broadest above the base and tapering 
to the apex, but several times longer than wide. Page xii. 
Lateral, Situated on the side of a branch. 
Leaf. The green expansions borne by the branches of a tree, 
consisting of a blade with or without a petiole. 
Leaflet. One of the small blades of a compound leaf. 
Leaf-scar. The scar left on a twig by the falling ofa leaf. 
Page xv1. 
Legume. A pod-like fruit composed of a solitary carpel and 
usually splitting open by both sutures (Leguminosae). 
Lenticels. Corky growths on young bark which admit air to the 
interior of a twig or branch. 
Linear. Wong and narrow, with parallel edges (as pine needles). 
Page x1. 
Lobe. Any division of an organ, especially if rounded. 
Lobed. Provided with a lobe or lobes. Page xu11. 
Lustrous. Glossy; shining. 
Membranaceous. Thin and somewhat translucent. 
Midrib. The central vein of a leaf or leaflet. 
Monoecious. Unisexual, with staminate and pistillate flowers on 
the same individual. 
Mucilaginous. Slimy; resembling or secreting mucilage or gum. 
Mucronate. Tipped with a small, abrupt point. Page x11. 
— 235 — 
