B84 GLOSSARY. 
Leaf-mould. Decayed leaves and other organic matter constitut- 
ing the forest floor. 
Leaflct. One of the wing divisions of a compound leaf. 
Leather board. A material made from wood pulp and which re- 
sembles leather in color and texture. 
Legume. A simple pod opening by both ventral and dorsal 
sutures; fruit of pea family. (e. g. Locust.) 
Leguminous. Pertaining to the family Leguminosae; said of 
plants bearing legumes. 
Loam. Friable, mellow, rich soil containing much humus. 
Lobe. A projection or division of a leaf not more than half the 
depth of the wing. 
Lyrate. A pinnatifid leaf of an obovate or spatulate outline with 
the end lobe large and roundish and the lower lobes small, 
(e. g. Bur Oak.) 
Manure. Plant food; any substance which promotes plant 
growth. 
Monadelphous. Said of stamens when united by their filaments 
in one group. 
Mono. Prefix meaning one. 
Monoccious. Both staminate and pistillate flowers borne on the 
same plant. (e. g. Black Walnut.) 
Mound-layering. (Page 89.) 
Mulch. Any loose material that protects the soil from frost or 
evaporation. 
Muskeg. A term commonly applied to sphagnum swamps by the 
Indians and woodsmen of northern Minnesota. 
Narrow-leaved trees. Trees with needle or awl-shaped leaves, 
which expose no great surface to the light. 
Nursery. A plot of ground set apart for the raising of plants 
that are to be transplanted elsewhere. An establishment 
for the raising of plants. 
Obcordate. The reverse of cordate. 
Oblanceolate. The reverse of lanceolate. 
Oblong. About twice as long as broad with nearly parallel sides. 
Obovate. The reverse of ovate. 
Obtuse. Blunt, not acute. (e. g. leaflets of Locust.) 
Odd-pinnate. Applied to pinnately compound leaves having a 
terminal leaflet. (e. g. Ash.) 
