Glume, or Husk, the calyx or blossom of grasses and corn, 

 formed of one or more thin, dry, semi-transparent 

 leaves, called valves, embracing the seed, often termi- 

 nated by the arista, or beard. The chaff. 



Hirsute, rough with hairs. 



Hispid, rough} having strong hairs, or bristles, more than 

 hirsute. 



Imbricated, lying over each other, like tiles on a roof; as 

 leaves in the bud. 



Inferior. An inferior flower, is one in which the calyx and 

 corolla are below the germ. 



Inflexed, turned, bent. 



.Inflorescence, a term used to express the particular manner in 

 which flowers are situated upon a plant. As a bunch, 

 (thyrsus) a dense or close panicle, corymb, spike, ra- 

 ceme, umbel, whorl, cyme, fascicle, etc. 



Involucre, or involucrum, a sort of general calyx serving for 

 many flowers; generally situated at the base of an um- 

 bel, or head; as in co; nus florida, or dogwood. 



Involute, rolled spirally inwards; the reverse of revolute. 



Keel, the under petal of a papilionaceous flower. Also the 

 lower side of the midrib of a leaf. 



Keeled, or carinated, having a longitudinal prominence on 

 the back. See also Papilionaceous. 



Labiate, having an upper and lower lip, as in flowers of the 

 class Didynamia. 



Lamina, the border, the upper part, broad or spreading part 

 of a petal, in distinction from its claw. 



Lanceolate, shaped like a lance, oblong, and gradually taper- 

 ing towards each extremity, spear-shaped, as in the 

 willow. 



Leaflet, a little leaf, or one of the divisions of a compound 

 leaf. 



Legume, a seed-vessel of two valves, in which the seeds are 

 fixed to one suture only. A pod: differing from sili- 

 qua, (silique, E.) in which the seeds are attached to 

 both sutures. 



Limb, the border or upper spreading part of a monopetalous 

 corol. 



Linear, of the same breadth throughout, except at the extre- 

 mities; as in most of the grasses. 



Lip, the upper or under side of the mouth of a labiate corolla, 

 as in sage, hyssop, etc. 



Lobed, when divided to the middle, into parts distant from 

 each other, with rounded, or convex margins, as in the 

 leaves of sassafras, etc. 



J\tembranaceous, flatted or resembling parchment. A mem- 

 branaceous leaf has no distinguishable pulp between 

 the two surfaces. Very thin and delicate. 



Midrib, the large central vein of a leaf, which is a continu- 

 ation of the petiole. 



Monopetalous, having only one petal, consisting of two parts, 

 a tube, or lower part, and a limb. 



Multifid, many cleft; having many divisions. 



Nerves, parallel veins. 



Obovate, inversely ovate ; having the narrow end downward. 

 Officinal, officinalis, kept for sale as medicine. 

 Orbiculate, in the form of an orb; a leaf that has both its 

 longitudinal, and transverse diameters equal. 



Ovate, egg-shaped ; and the base wider than the other end. 



Palmate, hand-shaped; with the fingers extended, or spread. 



Panicle, (L. Panicula) a species of inflorescence in which 

 the flowers or fruits are scattered on peduncles, vari- 

 ously subdivided, without order, as in Oat, and grasses. 



Paniculated, having branches variously subdivided, as a pa- 

 niculate stem. Or having the flowers in panicles. 



Papilionaceous, resembling the butterfly; as the pea. Usu- 

 ally four-petaled, having an uoper spreading petal, 

 called the banner or standard: two side petals, term- 

 ed wings, and a lower petal styled keel. 



Pappus, the down of seeds; as that of the dandelion. A 

 feathery appendage. 



Parasitic, growing on another plant, and drawing nourish- 

 ment from it; as the Mistletoe. 



Patulous, spread'ng: as a patulous calyx, etc. 



Pectinated, a pinnatifid leaf, the segments of which are re- 

 markably narrow, like the teeth of a comb. 



Pedate, a ternate leaf, with its lateral leaflets compounded 

 in thei- fore -part. 



Pedical, the ultimate branch of a peduncle. A little stalk. 



Peduncle, or flower-stalk, is a partial trunk, springing from 

 the stem, and supporting the flowers, but not the 

 leaves. 



Pellicle, a very thin stratum, or coat. 



Peltate, or sliield-'brmed, when the foot-stalk is inserted 

 into, or near the centre of the lower surface of the 

 leaf, as in the nasturtium. 



Pencilled, ending like a painter's pencil, or brush. 



Perfoliate, surrounding the stem on all sides and perforated 

 by it. It differs 'Yom connate, in not consisting of two 

 leaves; as in Eupatorium perfoliatum, or American 

 Thorough-wort. 



Pericarp, the seed-vessel of a plant. 



Persistent, not falling off. Those parts of a flower are per- 

 sistent which remain till the fruit is ripe. 



Personate, masked. Having the mouth of the corolla closed 

 by a proinnent palate; as in the Toadfax, (Antirrhi- 

 num.') 



Petiole, a leaf-stalk; the foot-stalk of a leaf. 



Petiolated, growing on foot-stalk, as in the currant. 



Pilose, hairy. With a stiff pubescence. 



Pinnate, a species of compound leaf wherein a simple peti- 

 ole has several leaflets attached to each side of it. 



Pinnatifid, a species of simple leaf, divided transversely, by 

 oblong horizontal segments, not extending to the mid- 

 rib. 



Raceme, or cluster, consists of numerous, rather distant flow- 

 ers, each on its own proper stalk, and all connected by 

 one common stalk, as a bunch of currants. 



Radiant, rayed, or radiate coral or flower, is a compound 

 flower, consisting of a disk, in which the corollets or 

 florets are tubular, and regular, and of a ray, in which 

 the florets are irregular. 



Radical, proceeding immediately from the root; as the leaves 

 of the cowslip. 



Ray, the diverging florets or petals which form the outside of 

 radiate flowers, cymes, and umbels. 



