538 GLOSSARY OF BOTANICAL TERMS 



Filament. — The stamen-stalk bearing the anther. It is not an es 



part of the ^flo^ver. 

 Floret. — Diminutive of fiower. Applied to the small flowers o 



pos'ites. 



Glabrous. — Smooth, without hairs or bristles. 



Inflorescence. — Flowering; having reference to method, and wherf 

 are several flowers, their relation to each other and the stem. 



Involucel. — "When an umbel of flowers is compound, the bracts undt 

 the secondary umbels are called involucels. 



Involucre. — Leaves, sometimes petal-like, as in flowering dogwoo 

 rounding a single flower or a group of small flowers. Ge 

 bract-like and green, as in the parsley family. 



Keel. — Applied to the two united petals in the front part of such 

 as those of the pea and bean. 



Labellum or lip. — The name of the large, petal of orchids. 



Leaflet. — When a leaf is cut down to the mid-rib it is a compound le 



each division is a leaflet. Such a compound leaf is that of tl; 



mon locust. 

 Legume. — The fruit of the pea and bean family, usually opening 



both sides. 

 Lip. — The upper petal of orchids. Also applied to each divisioc 



divided flowers, as mints or figworts. 

 Lyrate. — Lyre -shaped. Leaves cut, with a large central, termina 



and smaller ones along the side, as in some mustards. 



Mid-rib.— T\ie central, large vein of a leaf. 



Ovate. — Egg-shaped. Broader above, tapering below. 



Palmate. — Leaves spreading from the tip of a common stalk. 

 Panicle. — A compound flower-cluster, irregularly branching. Gras 



lilies-of-the-valley are examples. 

 Papilionaceous (corolla).— The peculiarly shaped flowers of the pul 



■ ily, having standard, wings, and keel. 

 Pappus. — The calyx of composites ; the down of thistles and dand( 

 Pedicel. — The stalk of each flower of a cluster of flowers. 

 Peduncle. — The naked stalk of a flower. When flowers are cli 



their common stalk is the common peduncle. 

 Perianth. — The floral envelopes (sepals and petals), taken collectiv 



