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GLOSSARY OF TECHNICAL TERMS 



Digitate. Said of a compound leaf in which the leaf- 

 lets are borne at the apex of the petiole. 



Dioecious. Unisexual, with the flowers of the 2 sexes 

 borne by distinct individuals. 



Disciferous. Bearing a disk. 



Disci/arm. Depressed and circular like a disk. 



Discoid. Appertaining to a disk. 



Disk. The development of the torus or receptacle of 

 a flower within the calyx or within the corolla and 

 stamens. 



Dissepiment. A partition in an ovary or pericarp. 



Dorsal. Relating to the back. 



Dorsal suture. The line of opening of a carpel corre- 

 sponding to its midrib. 



Drupaceous. Resembling or relating to a drupe. 



Drupe. A stone fruit. 



Duct. An elongated cell or tubular vessel found espe- 

 cially in the woody parts of plants. 



Eglandular. Without glands. 



Ellipsoid. An elliptical solid. 



Elliptical. Oval or oblong with regularly rounded 

 ends. 



Emarginate. Notched at the apex. 



Embryo. The rudimentary plant formed in the seed. 



Endocarp. The inner layer of a pericarp. 



Endogenous. Descriptive of Eudogens, monocotyle- 

 donous plants with stems increasing by internal 

 accessions. 



Epicarp. The thin filmy external layer of a peri- 

 carp. 



Epigynous. Placed on the ovary. 



Erase. Descriptive of an irregularly toothed or 

 eroded margin. 



Excurrent. Running through the apex or beyond. 



Exocarp. The outer layer of a pericarp. 



Exogenous. Descriptive of Exogens, plants with 

 stems increasing by the addition of a layer of wood 

 on the outside beneath the constantly widening 

 bark. 



Extrorse. Directed outward, descriptive of an anther 

 opening away from the axis of the flower. 



Falcate. Scythe-shaped. 



Fascicle. A close cluster of leaves or flowers. 



Fascicled. Arranged in fascicles. 



Feather-veined. Having veins extending from the 

 sides of the midrib. 



Ferrugineous. The color of iron rust. 



Fibro-vascular. Consisting of woody fibres and ducts. 



Filament. The stalk of an anther. 



Filamentose. Composed of threads. 



Fimbriate. Fringed. 



Fistulose. Hollow through the whole length. 



Flabellate. Fan-shaped ; much dilated from a wedge- 

 shaped base with the broader end rounded. 



Foliaceous. Leaf -like in texture or appearance. 



Foliolate. Having leaflets. 



Foliole. A leaflet. 



Funicle. The stalk of an ovule or seed. 



Gamopetalse. Plants with corollas of coalescent 

 petals. 



Gamopetalous. Descriptive of a corolla of coalescent 

 petals. 



Geniculate. Bent abruptly like a knee. 



Gibbous. Swollen on one side. 



Glabrate. Nearly glabrous or becoming glabrous. 



Glabrous. Smooth, not pubescent or hairy. 



Gland. A protuberance on the surface, or partly im- 

 bedded in the surface of any part of a plant, either 

 secreting or not. 



Glandular. Furnished with glands. 



Glaucescent. Nearly or becoming glaucous. 



Glaucous. Covered or whitened with a bloom. 



Gymnospermse. Plants with naked seeds, that is, not 

 inclosed in a pericarp. 



Gynophore. The stipe of a pistil. 



Heartwood. The mature and dead wood of an exoge- 

 nous stem. 



Hermaphrodite. With staminate and pistillate organs 



in the same flower, equivalent to perfect. 

 Hilum. The scar or place of attachment of a seed. 

 Hirsute. Hairy, with coarse or stiff hairs. 

 Hispidulous. Minutely hispid. 

 Hypogynous. Under or free from the pistil. 



Imbricate. Overlapping, like the shingles on a roof. 



Incumbent. Leaning or resting upon, as the radicle 

 against the back of one of the cotyledons. 



In-duplicate. With edges folded in or turned inward. 



Inferior. Said of an organ placed below another, like 

 a calyx below an ovary or an ovary below a superior 

 calyx. 



Inflorescence. Flower-cluster. 



Infrapetiolar. Below the petioles. 



Innate. Borne on the apex of the supporting part ; 

 in an anther the counterpart of adnate. 



Interpetiolar. Between the petioles. 



Introrse. Turned inward ; descriptive of an anther 

 opening toward the axis of the flower. 



Inverse. Inverted. 



Involucre. A circle of bracts surrounding a flower- 

 cluster. 



Involute. Rolled inward. 



Laciniate. Cut into narrow incisions or lobes. 



Lactescent. Yielding milky juice. 



Lamellate. Composed of thin plates. 



Laminate. Composed of plates. 



Lanceolate. Shaped like a lance ; narrower than ob- 

 long and tapering to the ends, or at least to the 

 apex. 



Leaf. Green expansions borne by the stem in which 

 assimilation and the processes connected with it 

 are carried on. 



Leaflet. The separate division of a compound leaf. 



Legume. The seed vessel of plants of the Pea fam- 

 ily, composed of a solitary carpel normally dehis- 

 cent only by the ventral suture. 



Lenticels. Lenticular corky growths on young bark. 



Lepidote. Beset with small scurfy scales. 



Linear. Said of a narrow leaf several times narrower 

 than long, with parallel margins. 



Lobe. The division of an organ. 



Lobulate. Divided into small lobes. 



Loculicidal. Dehiscent into the cavity of a pericarp 

 by the back, that is through a dorsal suture. 



Medullary rays. The rays of cellular tissue in a trans- 

 verse section of an exogenous stem and extending 

 from the pith to the bark. 



Membranaceous. Thin and pliable like a membrane. 



Micropyle. The spot or point in the seed at the place 

 of the orifice of the ovule. 



Midrib. The central or main rib of a leaf. 



Monoecious. Unisexual, with the flowers of the two 

 sexes borne by the same individual. 



Mucro. A small and abrupt tip to a leaf. 



Mucronate. Furnished with a mucro. 



Muricate. Rough, with short rigid excrescences. 



Naked buds. Buds without scales. 



Nectar. The sweet secretion of various parts of a 

 flower. 



Nectariferous. Nectar-bearing. 



Node. The portion of the stem which bears a leaf or 

 whorl of leaves. 



Nucleus. The kernel of an ovule or seed. 



Nut. A hard and indehiscent 1-seeded pericarp pro- 

 duced from a compound ovary. 



Nutlet. A diminutive nut or stone. 



Obcordate. Inverted heart-shaped. 



Oblanceolate. Lanceolate but tapering toward the 



base more than toward the apex. 

 Obovate. Ovate with the broader end toward the 



apex. 

 Obovoid. Solid ovate with the broader end toward 



the apex. 

 Obpyramidal. Inversely pyramidal. 



