8o8 REPORT OF NEW JERSEY STATE MUSEUM. 



Glume. A chaff-like bract. In grasses, one of the two empty bracts at the 



base of a spikelet. 

 Hastate. Arrow shaped. 

 Hirsute. Coarsely or stiffly pubescent. 

 Hispid. With bristly hairs. 



Included. Not protruding, opposite of exserted. 

 Inflorescence. The flowering portion of a plant. 

 Innovation. An offshoot from the stem. 



Involucre. A circle of bracts, surrounding a flower or head of flowers. 

 Leaflet. One component of a compound leaf. 

 Legume. A pod-like fruit. 



Lemma. The lower bract inclosing the flower in grasses. 

 Ligule. A flat strap-shaped corolla, as the ray flowers of a sunflower, also a 



scarious margin to the sheath of grasses. 

 Loculicidal. Splitting or opening by a slit on the top or back of a cell or pod. 

 Monoecious. Stamens and pistils in separate flowers on the same plant. 

 Ocrea. A tubular stipule. 



Palea. The upper bract enclosing the flower of a grass. 

 Panicle. An irregular branching inflorescence, with the individual flowers 



pedicelled. 

 Papilionaceous. Having a pea-shaped blossom. 

 Pappus. A tuft usually of down or bristles at the summit of the seeds ot 



Compositae; in reality part of the calyx. 

 Peltate. A shield-shaped leaf, etc., attached by the middle of the lower 



surface. 

 Perianth. The calyx and corolla of a flower. 

 Perigynium. The inflated covering of the seed in Carex. 

 Persistent. Remaining attached. 

 Petal. One of the divisions of the corolla. 

 Petiole. A leaf stem. 



Pinna. One of the primary divisions of a fern frond, or a compound leaf. 

 Pinnatifld. Cut or divided into pinnae. 

 Pistil. The seed-bearing organ of the flower, consisting of the ovary, stigma 



and style. 

 Pollen. The fertilizing powder contained on the anthers. 

 Puberulent. Minutely pubescent. 

 Pubescent. Covered with soft, or downy hairs. 



Raceme. An elongate, simple inflorescence, with the flowers pedicelled. 

 Ray. Marginal flowers in Compositae; or the branch of an umbel. 

 Receptacle. The broadened tip of a stem, pedicel, etc., which bears the flower 



parts (or the flowers of a head). 

 Rhachis. The central stem, etc., of a spike or compound leaf. 

 Samara. A non-splitting winged fruit. 

 Scabrous. Rough and harsh. 



Scape. A stem arising from the ground bearing only flowers. 

 Sepal. One of the divisions of the calyx. 

 Serrate. With sharp teeth directed forward. 

 Sessile. Without a stem of any sort. 

 Sheath. A tubular covering, such as the lower part of a grass leaf. 



