NITRARIA with entire leaves, blunt. Native of Siberia. REFERENCE TO THE PLATE. 1. The empalement. 2. A petal. 3. Seed-bud, chives, and pointal. 4. A chive magnified. 5. Seed-bud and pointal. 6. The same magnified. This species of Nitraria is named after Schober, a physician and lover of botany in Russia. It grows in the barren salt deserts near the Caspian Sea, particularly about the salt lakes in Siberia, and is also found in Astracan. It bears reddish berries of a salt taste, is a very rare plant in our gardens, but successfully cultivated by Mr. Bell, who not only puts salt to the roots, but also on the foliage. From a plant of his thus treated our drawing was made last summer. Only one more species of the genus has yet been discovered. [Illustration] PLATE DXXX. BIGNONIA UNCATA. _Hooked Bignonia._ CLASS XIV. ORDER II. _DIDYNAMIA ANGIOSPERMIA._ Two Chives longer. Seeds covered. ESSENTIAL GENERIC CHARACTER. CALYX 5-fidus, cyathiformis. Corolla fauce campanulata, 5-fida, subtus ventricosa. Siliqua bilocularis. Semina membranacea, alata. EMPALEMENT 5-cleft, cup-shaped. Blossom bell-shaped at the mouth, 5-cleft, and bellied beneath. A pod of two cells. Seeds winged, with a skinny membrane. SPECIFIC CHARACTER. BIGNONIA foliis conjugatis, longo-lanceolatis, acuminatis, et tribus cirris acutis uncatis. BIGNONIA with conjugate, long-lanced, acuminate leaves, and three hooked sharp tendrils. REFERENCE TO THE PLATE. 1. The empalement. 2. A flower spread open, the segments of the border cut off. 3. Seed-bud and pointal. This new species of Bignonia flowered for the first time in England in the stove of A. B. Lambert, esq. Boyton. We have seen it (but not in flower) in other collections, and have heard it called by the specific title of ophthalmica: but as no reason could be assigned for that appellation within the reach of our inquiry, we have named it from its hooked tendrils. It is an autumnal-flowering plant running to a great length, with frequent blossoms, is a native of Cayenne, and was introduced by Lord Seaforth. [Illustration] PLATE DXXXI. VERONICA DERWENTIA. _New Holland Veronica._ CLASS II. ORDER I. _DIANDRIA MONOGYNIA._ Two Chives. One Pointal. ESSENTIAL GENERIC CHARACTER. COROLLA limbo 4-partito: laciniis infimis angustioribus. Capsula bilocularis. BLOSSOM, border 4-parted. Lowest segments narrower. Capsule two-locular. SPECIFIC CHARACTER. VERONICA foliis lanceolatis, oppositis, alternis, dentatis: floribus spicatis, axillaribus: corollis parvis, pallide violaceis, fragrantissimis. VERONICA with leaves lance-shaped, opposite, alternate, and toothed. Flowers grow in spikes from the axillæ of the leaves. Blossoms small, of a pale violet colour, and very fragrant. REFERENCE TO THE PLATE.