FLORIGRAPHIA BRITANNICA; OR, ENGRAVINGS AND DESCRIPTIONS OF THE FLOWERING PLANTS AND FERNS OF BRITAIN. BY RICHARD DEAKIN, M.D., AUTHOR OF "THE FLORA OF THE COLOSSEUM OF ROME," ETC. VOL. III.-CLASSES XVI. To XXIII. LONDON: GROOM BRIDGE AND SONS, 5, PATERNOSTER ROW. SYNOPSIS OF THE GENERA. CLASS 16. MONADELPHIA. ORDER I. PENTANDRIA.—5 perfect Stamens. 1. ERO'DIUM, [Page 931.] Calyx of five pieces. Petals five. Stamens ten, five alternately imperfect, with a gland at the base of each. Fruit beaked. Capsules five, each with a long spirally twisted awn, bearded on the inner side. Herbaceous plants, with pinnated or lobed leaves, and peduncles mostly bearing several flowers. 2. GERA'NIUM, [Page 933.] Calyx of five pieces, Stamens ten, alternately larger, each of the larger ones bearing a gland at the base. Fruit beaked. Capsules five, each with a long naked awn, curling back from the base to the point. Herbaceous plants, with palmate leaves and peduncles, one or two flowered. ORDER III. POLY ANDRIA.-Many Stamens. 3. LAVATE'RA, [Page 943.] Calyx surrounded by an involucrum, from three to six lobed. Fruit of numerous one seeded capsules, arranged in a circle round a common axis. 4. MALVA, [Page 944.] Calyx surrounded by a three leaved involucrum. Fruit of numerous one seeded capsules, arranged in a circle round a common axis. 5. ALTHE'A, [Page 946.] Calyx surrounded by an involucrum, of from six to nine pieces. Fruit of numerous one seeded capsules, arranged in a circle round a common axis, in a fine lobed head. CLASS 17. DIADELPHIA. (Filaments combined in two sets), except in the first division of the 3rd Order. ORDER I. HEXANDRIA.-6 Stamens. 1. CORYDALIS, [Page 949.] Calyx of two small pieces, or wanting. Petals four, free or united, one of which is spurred at the base. Siliqua compressed, two valved, many seeded. 2. FUMA'RIA, [Page 951.) Calyx of two pieces. Petals four, one of them spurred or gibbous at the base. Siliqua indehiscent, one seeded, nut-like. Style deciduous. 3. POLY GALA, [Page 954.] Calyx of five pieces, persistent, the two inner ones usually larger winged and coloured. Petals three or five, attached by their claws to the tube of the filaments, the lower one keeled. Capsules compressed. Seeds downy, crested at the hilum. ORDER III. DECANDRIA.-10 Stamens. (All belonging to the Natural Order Papilionacea). 1. Calyx distinctly two lipped. 4. U'LEX, [Page 955.] Calyx of two pieces, with a small scale on each side at the base, the upper lip with three and the lower with two teeth. Stamens monadelphous. Legume turgid, one celled, two valved, ovate oblong, scarcely longer than the calyx-Branched spiny shrubs, with solitary yellow flowers. 5. GENISTER, [Page 957.] Calyx two lipped, the upper lip in two deep segments, the lower three toothed, keel oblong, straight. Stamens monadelphous. Style subulate, ascending. Legumes flat, compressed, or rather turgid, many seeded. Shrubby plants, with yellow flowers. 6. CY'TISUS, [Page 959.] Calyx two lipped, the upper lip mostly entire, the lower one slightly three toothed. Vexillum ovate, large, keel very blunt. Stamens monodelphous. Legumes compressed, flat, many seeded.Shrubs with yellow flowers and ternate leaves. 2. Calyx five toothed, or indistinctly two lipped. 7. ONO'NIS, [Page 961.] Calyx cut into five linear teeth. Vexillum large, striated. Stamens monodelphous. Le gumes turgid, sessile, few seeded.—Herbaceous plants or undershrubs, with ternate leaves and yellow or purple axillary flowers. 8. ANTHYLLIS, [Page 963.] Calyx tubular, five toothed, persistent, often inflated. Petals nearly all of an equal length. Legumes ovate, turgid, one to three seeded, enclosed in the calyx.- Herbaceous plants or undershrubs, of various habits. B. Filaments diadelphous, nine united, one free. 1. Style smooth. * Legumes of two more or less complete longitudinal cells. 9. ASTRA GALUS, [Page 964.] Calyx five toothed. Corolla with an obtuse keel. Stamens diadelphous. Legumes more or less perfectly two celled, formed by the lower suture being turned inwards.-Herbaceous plants or low shrubs, with pinnate leaves. 10. OXY'TROPIS, [Page 966.] Corolla Calyx five toothed. with a pointed keel. Stamens diadelphous. Legumes more or less perfectly two celled, formed by the upper suture being turned inwards.-Herbaceous plants, with pinnated leaves, flowers spicate, on axillary or radical peduncles. ** Legumes of one cell, one or many seeded. 11. MELILO TUS, [Page 968. ] Calyx five toothed. Keel simple, wings shorter than the vexillum. Stamens diadelphous. Legumes oblong, or sub-globose, coriaceous, one or few seeded, indehiscent.—Herbaceous plants, leaves ternate, with the stipules attached to the petioles, flowers yellow or white, in lax racemes. 12. TRIFOLIUM, [Page 970.] Calyx tubular, persistent, fivecleft or five-toothed. Corolla persistent. Keel obtuse shorter than both the vexillum and wings. Stamens |