Glossary 



251 



Inflated. Like a bladder. 



Inflorescence. A flower cluster. The flowering part of the plant 



especially the arrangement of a flower cluster. 

 Internode. Portion of stem between two nodes. 



Involucre. The bracts which surround a flower cluster or head, or a 



single flower. See page 258. 

 Irregular. Used to denote flowers in which the petals are unlike in 



size or form. 



Keel. Applied to the two lower united petals of a papilionaceous flower. 

 Keeled. Ridged like the keel of a boat. 



Lanceolate. Shaped like a lance. Three or four times as long as 

 broad, and tapering from the basal third to a narrow apex. 



Lateral. Belonging to the side. Not terminal. 



Leaflet. One single division of a compound leaf. See page 255. 



Legume. A one-celled, dry fruit usually splitting in two valves when 

 mature as the pod of the bean or pea. 



Linear. A leaf several times as long as wide, with sides parallel or 

 nearly so. See page 256. 



Lip. The upper or lower division of a bilabiate corolla or calyx. 



Lobe. A projection or division of a leaf. 



Loded. Divided to about the midrib, or bearing lobes. 



Membraneous. Papery. Membrane-like. 



Midrib. The principal usually the central vein of a leaf or leaflet. 

 Minute. Very small. Tiny. 



Naturalized. Not native, but having become thoroughly established as 



a part of the flora of a region. 

 Nectar. The sweet secretion of the flower gathered by insects, especially 



bees and moths. 



Netted-veined. With veins running in various directions and connect- 

 ing with each other. 



Node. The point on a stem at which a leaf or whorl of leaves is borne, 

 frequently hard and thickened. 



Nut. A hard, dry indehiscent, one-seeded fruit with a stony shell. 



Ob. A Latin prefix used to signify inversion. 



Oblanceolate. Lanceolate tapering toward the base. See page 256. 



Oblique. Unequal, slanting. 



Oblong. Longer than broad and with nearly parallel sides. See page 

 256. 



Obovate. Egg-shaped with the tip downward, inverted ovate. See 

 page 256. 



Odd pinnate. With an odd leaflet at the end. See page 255. 

 Opposite. On opposite sides of the stem directly across from each 

 other. 



