1258

ARBORETUM AND FRUTICETUM.

PART III.

is considered unwholesome, and even dangerous, to those who are longexposed to it. In the Oard. Mag., vol. ix. p. 586., Mr. Godsall, nursery-man, of Hereford, mentions that he has seen the pavement of an arbourover which a plant of Perlploca gras'ca was trained, and in full flower,literally covered with dead house-flies, which appeared to have fallen fromthe blossoms, apparently killed by some deleterious property contained inthem. The capability of extension of this plant is proved by one in theCambridge Botanic Garden having been trained, by means of a jack chain,as high as the branches of one of the trees of Sophbra japonica, mentionedin p. 565. as being 50 ft. high, and which was clear of branches to a con-siderable height. When twined round a tree, the periploca forms a deepidentation in the bark. (See Mag. Nat. Hist., vol. vi. p. 331.) Price ofplants, in the London nurseries, Is. 6 d. each; at Bollwyller, 60 cents ; andat New York, 37J cents.

-I 2. P. angustifo'lia Labill. The narrow-leaved Periploca.

Identification. Lab. PL Syr., dec. 2. p. 13. t 7.; Don’s Mill., 4. p. 163.

Synonymes. P. rigida Fits.; P. lsevig&ta Vahl.

r_:_- T-t-tn di o..» o « in t it . nn/1 xl— morv

Engravings. Labill. PL Syr., dec. 2. p. 13. t. 17.; and out fig. 1089.

Spec. Char., fyc. Leaves veinless, narrow-lanceolate, glabrous, per-sistent. Cymes trichotomous. Flowers purplish inside, pale yellowbeneath and round the mouth, with a white spot in the middle.Leaves 1 in. long. {Don's Mill., iv. p. 163.) A twining shrub, anative of Tunis, on Mount Schibel Jsekel; and of the Island ofLampedosa, at the sea side, near Laodicea. An ornamental plant,which was introduced in 1800, and is quite as hardy as P. graj'ca.It is rare in British collections.

P. l&vighta Ait.; P. punicas folia Cav. Icon., 3. t. 217.; is atwining evergreen shrub, a native of the Canary Islands, which wasintroduced in 1779; and, though generally kept in green-houses,would live through the winter against a south wall, with protection.

The half-hardy species of Periploca, being deciduous, may be pre-served through the winter with much less care than many othertender trees and shrubs.

CHAP. LXXIX.

OF THE HARDY AND HALF-HARDY LIGNEOUS PLANTS BELONGINGTO THE ORDER BIGNONAl'cE.®.

The genera belonging to this order which contain hardy species are,Bignonia, Tecoma, and Catalpa, which are thus distinguished : —

Bigno'nai Tourn. Calyx 5-toothed. Dissepiment of the fruit parallel.Tacoma Juss. Calyx 5-toothed. Dissepiment of the fruit contrary.Cata'lpa Juss. Calyx 2-parted. Dissepiment of the fruit parallel.

Genus I.

BIGNO'N/A Tourn. The Trumpet Flower. Lin. Syst. Didynamia

Angiospermia.

Identification. Tourn. Inst, 72.; Juss. Gen., 139.; Gsertn. Fruct, t. 52.; H. B. et Kunth Nov. Gen.Araer., 3. p. 132.; D. Don in Edin. Phil. Journ.: Lindl. Nat. Syst. Bot., edit. 2., p. 282.: Don’sMill., 4. p. 216.

Synonymes. Bignbnta sp. of Lin. and others ; Bignone, Fr .; Trompetenblume, Ger.

Derivation. So named by Tournefort, in compliment to the Abbe Bignon, librarian to Louis XIV.

Gen. Char., Sfc. Calyx campanulate, 5-toothed, rarely entire. Corolla with ashort tube, a campanulate throat, and a 5-lobed bilabiate limb. Stamens 4,didynamous, that is, 2 long and 2 short; with the rudiment of a fifth. Lobesof anthers divaricate. Stigma bilamellate. Capsule silique-formed, 2-celled;