GLOSSARY OF TECHNICAL TERMS 



29 



Hilum; the scar of the seed, its place of attach- 

 ment. 



HIrlute; with stiff, beard-like hairs. 



Hispid; with short stiff, bristle-like hairs. 



Homogamous; a head containing flowers of one 

 kind only. 



Hooded; liood-like. 



Hooked; bristles or other appendages curved at 

 tlie apex. 



Horny; horn-like in texture. 



Hyaline; transparent or nearly so. 



Hybrid; a cross between two allied species. 



Hypogynous; inserted under the pistil. 



imbricate; overlapping one another. 



Imperfeot; flowers in which either the stamens 



or pistils are wanting. 

 Inequilateral; imequal sided. 

 Incised; deeply and irregularly cut. 

 Included; enclosed, not exserted. 

 Incomplete; a flower in which the calyx or 



corolla is wanting. 

 Indefinite; very numerous. 

 Indehlsoent; not splitting open. 

 Indigenous, native to a country, as opposed to 



introduced, 

 indumentum; an}; hairy or scaly covering. 

 Induslum; the shield-like body covering the 



fruit-dots in ferns. 

 Inferior; below some other organ; specifically 



the ovaiy is said to be inferior when the 



floral organs grow from or near its summit. 

 inflated; swollen and. bladder-like. 

 Inflexed; bent inward, 

 inflorescence; the arrangement of the flowers 



on the plant, 

 inkerted; placed on or joined to. 

 Internode; the part of a stem .between twd 



nodes. 

 Interpetlolar; between the petioles, 

 introrse; turned or facing inward. 

 Involucre; a whorl or set of bracts around a 



flower, or an inflorescence. 

 Involute; rolled inward from the edges. 

 irregular; wanting in regularity, asymmetric. 



Jointed; separate or separable into distinct 

 parts. 



Keel; a projecting ridge on a surface, like the 

 keel of a boat; the two anterior petals of 

 a papilionaceous corolla. 



Keeled; fumislied with a keel or sharp longi- 

 tudinal ridge. 



Kidney-shaped;' resembling the outline of a 

 kidney. 



Label lum; the odd, usually enlarged petal in 

 the orsliids and some other flowers. 



Lacerate; with margin appearing as if torn. 



Lacinlate; slashed; cut into deep narrow lobes. 



Lamina; tlie expanded part or blade of a leaf-. 



Lanate; woollj', clothed with long and short 

 hairs. 



Lanceolate; lance-shaped. 



Latex; tlie milky juice of plants. 



Lax; loose in arrangement, tlie opposite of 



crowded. 

 Leaflet; one of the divisions or blades of a 



compound leaf. 

 Leathery; tough and leather-like; coriaceous. 

 Legume; a simple pod which dehisces in two 



pieces, like that of the bean, 

 Lepldote; covered with small scales. 

 LIgule; the strap-shaped corolla in many Coni- 



posiiae; the thin appendage at the apex 



of the leaf-sheaths of most grasses. 

 Limb; the border of a corolla. 

 Linear; narrow, many times as long as broad, 



the margins parallel. 

 Lip; the principal lobes of a bilabiate corolla 



or calyx of irregular flowers. 

 Lobe; any projection or division of a leaf or 



other organ. 

 Loculicidal; capsules opening by splitting 



through the back of each cell. 



Macrospore; the large spore when tliere are two 



kinds. 

 Male; flowers having stamens but no pistil. 

 Margin; the edge of a flattened body. 

 Median; belonging to the middle. 

 Membranaceous; thin and. soft, of the texture 



of membrane, 

 Merous; part; used with numbers to denote the 



number of parts, as trimerous or 3-merous, 



with 3 parts, etc. 

 Microspore; the smaller kind of spore when 



there are two kinds. 

 Midrib; the middle or main rib of a leaf. 

 Monocotyledonous; with only one cotyledon. 

 Monoecious; male and female flowers borne on 



the same plant. 

 Muoronate; tipped with an abrupt short point. 

 Murlcate; beset with short and hard or prickly 



points. 



Naked; wanting some usual covering. 

 Naturalized; introduced from a foreign country, 



and established. 

 Nerve; a name for the ribs or veins of leaves. 

 Netled-veined; fumislied with branching veins 



forming network. 

 Nodding; bending so that the summit hangs 



downward. 

 Node; the joints of a stem, or the part bearing 



tlie leaves or branches. 

 Nut; a hard, usually 1-seeded, indchiscent fruit. 

 Nutlet; a little nut. 



Obcordate; inversely cordate, tne notch apical. 

 OBIanceolate; the reverse of lanceolate, the 



broader end toward the top. 

 Oblique; unequal-sided; slanting. 

 Oblong; from two to four times as long as 



broad. 

 OboVale ; a flat inversely ovate body, the broad 



end upward. 

 Obovoid; a solid body obovate in outline. 

 Obsolete; wanting or rudimentary. 

 Obtuse; lilinit or round at the end. 



