GLOSSARY 



879 



Gynospore. One of the larger (female) repro- 

 ductive bodies in the Isoeiaceae, etc. 



GynoBtemium. The compound structure re- 

 sulting from the union of the stamens and 

 pistil in the Orchidaceae. 



Habit, The general appearance of a plant. 



BaWerd-ahaped. The same as Hastate. 



Hastate. Like an arrow-head, but with the 

 baeal lobes pointing outward nearly at right 

 angles. 



Head. A dense cluster of sessile or nearly ses- 

 sile flowers on a very short axis or receptacle. 



Heart-shaped. Ovate with two rounded lobes 

 and a sinus at base ; commonly used to define 

 such a base. 



Herb. A plant with no persistent woody stem 

 above ground. 



Herbaceous. Having the characters of an herb ; 

 leaf-like in color and texture. 



Heter acarpous. Producing more than one kind 

 of fruit. 



Heierogamous. Bearing two kinds of flowers. 



Hilum. The scar or point of attachment of the 

 seed. 



Hirsute. Pubescent with rather coarse or stiff 

 hairs. 



Hirsuiuloua. Slightly hirsute. 



Hirtelloua. Minutely hirsute. 



HUjyid. Beset with rigid or bristly hairs or -with 

 bristles. 



Hispidulous. Minutely hispid. 



Hoary. Grayish-white with a fine close pubes- 

 cence. 



Homogamous. Bearing but one kind of flowers. 



Hyaline. Transparent or translucent. 



Hybrid. A cross-breed of two species. 



Hygroscopia. Altering form or position through 

 changes of moisture. 



HypooMl. The (often fleshy or otherwise 

 modified) basal portion of the labellum or lip 

 in Orchidaceae. 



Hypogynous. Situated on the receptacle be- 

 neath the ovary and free from it and from 

 the calyx ; having the petals and stamens so 

 situated. 



Imbricate. Overlapping, either vertically or 

 spirally, where the lower piece covers the 

 base of the next higher, or laterally, as in the 

 aestivation of a calyx or corolla, where at least 

 one piece must be wholly external and one 

 internal. 



Immersed. Growing wholly under water. 



Impressed. Bent inward, hollowed or furrowed 

 as if by pressure. 



Incised. Cut sharply and irregularly, more or 

 less deeply. 



Included. Not at all protruded from the sur- 

 rounding envelope. 



Incumbent (cotyledons). Lying with the back 

 of one against the radicle. 



Indefinite (stamens, etc.). Inconstant in number 

 or very numerous. 



Indehiscent. Not opening by valves, etc.; 

 remaining persistentlv closed. 



Indigenous. Native an«t origimal to the 



region. 

 Indurated. Hardened. 

 Indusiate. Provided with an indusium. 

 Indusium. The proper (often shield-shaped) 



covering of the sorus or fruit dot in Ferns. 

 Inferior'. Lower or below ; outer or anterior. 



Inferior ovar'y, one that is adnate to the 



calyx. 

 Inflated, Bladdery. 

 Inflorescence, The flowering part of a plant, 



and especially the mode of its arrangement. 

 Infra-, In composition, below ; as infra- 

 axillary, below the axil. 

 Innovation. An offshoot from the stem. 

 Inserted. Attached to or growing out of. 

 Inter- or Intra-. In composition, between. 

 Interfoliaceous. Between the leaves of a pair, 



as the stipules of many liubiaceae. 

 Internode. The portion of a stem between two 



nodes. 

 Intramarginal. Within and near the margin. 

 Introduced. Brought intentionally from another 



region, as for purposes of cultivation. 

 Introrse, Turned inward or toward the axis. 

 Involucel. A secondary involucre, as that of an 



umbellet in Umbelliferae. 

 Involucellate. Having an involucel. 

 Involiicral. Belonging to an involucre. 

 Invohicrate. Having an involucre. 

 Involucre. A circle or collection of bracts sur- 

 rounding a flower cluster or head, or a single 



flower. 

 Involute. Rolled inward. 

 Irregular (flower). Showing inequality in the 



size, form, or union of its similar parts. 



Keel. A central dorsal ridge, like the keel of a 

 boat ; ' the two anterior united petals of a 

 papilionaceous flower. 



Labelktm. Lip ; the peculiar upper (but by a 



twist of the pedicel apparently lower) petal of 



the Orchidaceae, 

 Labiate. Lipped ; belonging to the Labiaiae. 

 Labyrinthiform, With comphcated sinuous 



lines or winding passages. 

 Lacerate. Irregularly cleft as if torn. 

 Laciniate. Slashed; cut into narrow pointed 



lobes. 

 Lamella. A thin flat plate or laterally flattened 



ridge. 

 Lanceolate. Shaped like a lance-head, several 



times longer than wide, broadest above the 



base and narrowed to the apex. 

 Leaflet. A single division of a compound leaf. 

 Legume. The fruit of the Leguminosae, formed 



of a simple pistil and usually dehiscent by both 



sutures. 

 Leguminous. Pertaining to a legume or to the 



Lemma. The lower of the two bracts inclosing 

 the flower in the Grasses ; sometimes called the 

 flowering glume. 



Lenticular. Lentil-shaped ; of the shape of a 

 double-convex lens. 



