GLOSSARY OP TERMS. 401 



Leathery, thin but tough. 



Legume, a dry elongated seed-vessel, formed of two oblong valves, with- 

 out a longitudinal part, f. 140. 



Ligule, the stipule of grasses. 



Limb, the expanded part of the corolla. 



Linear, flat, very narrow, with the edges parallel, f. 41. 



Lobed, divided into segments with rounded margins, f. 52. 



Lyre-shaped, pinnatifid, with the terminal segment rounded and larger, 

 f.48. 



Membranous, very thin, dry, and easily torn. 



Monoecious, when stameniferous flowers and pistilliferous flowers exist on 



the same plant. 

 Monopetalous corolla, consisting of one petal or piece, f. 117. 



Naked flower, destitute of a calyx. 

 Naked stem, or leaf, without hairs. 

 Naturalized plants, those originally introduced from another country, but 



now become wild. 



Nectary, a part of the flower which contains or secretes honey. 

 Needle-shaped leaves, linear and evergreen. 

 Neutral flowers, destitute of both stamens and pistils. 

 Notched leaf, or petal, ending with a small notch, f. 56. 

 Nut, a seed covered with a hard shell, which does not burst, f. 141. 



Obtuse, rounded at the end. 



Oblong, when the length is three or four times greater than the breadth, 



and the end rounded. 

 Opposite leaves, or other parts, coming off on opposite sides at the same 



place, f. 23. 



Oppositely pinnate leaf, with opposite leaflets, f. 77, 78, 79. 

 Orbicular, round and flat. 

 Oval, the length greater than the breadth, and both ends alike rounded, 



f. 37. 



Palmate leaf, having several oblong segments extending to the middle, 



f. 5o. 



Panicle, when the flowers are in a kind of loose subdivided cluster, f. 104. 

 Panicled stem, with irregular branches, which are themselves irregularly 



divided, the last divisions bearing flowers. 



Papilionaceous corolla, of four petals, resembling a butterfly, f. 128. 

 Papillous, covered with small soft prominences. 

 Partial involucre, at the base of a partial umbel. 

 Partial umbel, the secondary division of an umbel. 

 Pectinate, pinnatifid, with the segments very narrow, f. 50. 

 Pedate leaf, a ternate leaf, having its lateral leaflets divided into several 



others, f. 76. 

 Peduncle, a slender body by which the flower is connected with the stem 



or branch. 



Peltate leaf, when the stalk is inserted into the middle, f. 35. 

 Pendulous, hanging. 



Perfect flowers, having both stamens and pistils. 

 Perfoliate, when the stem, as it were, runs through a leaf, f. 32. 

 Perianth, a calyx contiguous to the corolla, or other internal parts of the 



flower, f. 110. 



