Hermaphrodite, or bisexual flowers, have both stamens and pistils present.

Hispid, bristly, thickly covered with stiff hairs.

Honey, the nectar secreted by many flowers to attract insects.

Humus, organic matter in the soil, more or less decomposed.

Hybrid, a cross between two species.

Hypogynous Flowers, have the calyx and corolla borne on the receptacle, and the ovary is superior.

Imbricated, overlapping like the tiles of a roof, such as the leaves of Gentiana imbricata.

Indehiscent Fruits, are those which do not open to allow the seed to escape.

Indigenous, native, not introduced.

Inferior, applied to the ovaries of flowers whose calyx-tube encloses the ovary; cf. Superior.

Inflorescence, the manner in which flowers are arranged on the main stem or on lateral branches.

Insectivorous Plants, are those which absorb nutriment from flies and other insects.

Internode, the portion of a stem between the attachment of two alternate leaves.

Involucel, the involucre of a partial umbel.

Involucre, the whorl of bracts below an inflorescence or below a single flower.

Irregular, unequally divided.

Keel, the two lower united petals of Leguminous flowers; keeled is also applied as an adjective to certain leaves.

Labellum, the lower lip of Orchids, Labiates, etc.

Laciniate, when leaf-lobes are narrow and very irregular.

Lamina, the blade or broad part of a leaf.

Lanceolate, tapering at both ends, but more so at the upper end; a somewhat comprehensive term applied to leaves, etc., which are about three or more times as long as broad.

Ligulate, strap-shaped..

Ligule, a small membranous bract embracing the stem of grasses and forming part of the sheath.

Limb, the broader part of a petal or leaf.

Linear, very narrow and with parallel edges.

Lobes, the divisions of a leaf, calyx, or corolla in a broad sense.

Lyrate, applied to a pinnatifid leaf with a rounded terminal lobe and smaller divisions towards the base, as in Geum montanum.

Membranous, thin and transparent like a membrane.

Midrib, the principal vein of a leaf.

Monocotyledon, a plant having only one seed-leaf. Grasses, Sedges, Lilies, and many bulbous and tuberous plants are Monocotyledons.

Monooecious Plants, are those which have the stamens and pistil in separate flowers, but on the same plant.

Mucronate, suddenly terminated by a short and stiff point or needle, called a mucro. In leaves it is the prolongation of the midrib.

Naturalised, of foreign origin, but established and growing naturally in a country.

Nectary, an organ secreting nectar or honey.

Nitrogenous, containing nitrogen.

Node, the point of insertion of a leaf on a stem.

Nut, a dry fruit with a hard, woody shell or pericarp.

Obcordate, inversely heart-shaped.

Obovate, inversely egg-shaped.

Obtuse, more or less rounded at the top.

Offset, the bud at the end of a runner or stolon.

Opposite, applied to leaves which are in pairs at the same level on the stem; cf. Alternate.

Orbicular, round, spherical.

Ovary, a carpel enclosing one or more ovules.

Ovule, the embryo seed enclosed in the ovary.

Paleaceous, chaffy.

Paleae, or Chaff, the inner bracts or scales in Compositce, Grami-nece, etc.

Palmate, divided like a hand into several lobes.

Panicle, a branched raceme.

Pappus, a feathery appendage of the seed of many Compositae.

Parasite, a plant living on or in another (the host) from which it derives part of its food; e.g. Orobanche. Semi-parasites include Pedicularis, Rhinanthus, Euphrasia, etc.

Patent, spreading open.

Pectinate, finely divided like the teeth of a comb.

Pedicel, the stalk of a flower in a compound inflorescence.

Peduncle, the stalk of an inflorescence, or of a solitary flower.

Peltate, applied to leaves which are more or less round, with the stalk in the middle (Hydrocotyle).

Perfoliate, when the stem passes through a pair of leaves, as in Chlora perfoliata. P erianth, the floral envelope replacing the calyx and corolla in the Monochlamydeae and Monocotyledons; e.g. the flower of a Crocus.

Pericarp, the wall of the developed ovary as seen in the fruit.

Perennial, lasting more than two years.

Persistent, not falling off.

Petal, a unit of the corolla.

Petaloid, in the colour or form of a petal.