is a very handsome middling-sized famous tree, found in gardens about Calcutta. In the Sanscrit it is called *Adiata*, and in the Bengalese *Rufuck*; but the name *Jonesia* was given to it by the Asiatic Society, who consecrated it to the memory of their first president Sir William Jones. It is thus described by Dr. Roxburgh, a member of that society:

"Calyx, two leaved, corol, one petaled, pistil-bearing; base of the tube impervious; filaments long, ascending, inserted into the margin of a glandulous nectarial ring, which crowns the mouth of the tube, the uppermost two of which more distant; style declining. Legume turgid. Trunk erect, though not very straight. Bark dark brown, pretty smooth. Branches numerous, spreading in every direction, so as to form a most elegant shady head. Leaves alternate, abruptly feathered, feathery, generally more than a foot long; when young pendulous and coloured. Leaflets opposite, from four to six pair, the lowermost broad lanced, the upper lanced; smooth, shining, firm, a little waved, from four to eight inches long. Petiole common, round, and smooth. Stipule axillary, foliaceous; in fact a process from the base of the common petiole, as in many of the grapes and monandriums, &c. Umbels terminal and axillary; between the stipule and branchlet, globular, crowded, subfeathery, erect. Bracts, a small hearted one under each division of the umbel. Peduncle and pedicels smooth, coloured. Flowers very numerous, pretty large; when they first expand they are of a beautiful orange colour, gradually changing to red, forming a variety of lovely shades; fragrant during the night. Calyx perianth, below two-leaved, leaflets small, nearly opposite, coloured, hearted, bracteate-like, marking the termination of the pedicel, or beginning of the tube of the corol. Corol one-petalled, funnel-form; tube slightly incurved, firm, and fleshy, tapering towards the base (club funnel-shaped) and there impervious; border four parted; division spreading, suborbicular; margins most slightly woolly: one third the length of the tube. Nectary, a filamentous and pistilliferous ring crowns the mouth of the tube. Stamens, filaments generally seven; and seven mult, I think, be the natural number; viz. three on each side, and one below, above a vacancy, as if the place of an eighth filament, and is occupied on its inside by the pistil; they are equal, distinct, ascending, from three to four times longer than the border of the corol. Anther uniform, small, incumbent. Pistil, germ oblong, pedicelled; pedicel inserted into the inside of the nectary, immediately below the vacant space already mentioned; style nearly as long as the filaments, declining; stigma simple. Pericarp, legume seimeter-formed, turgid, outside reticulated, otherwise pretty smooth; from five to ten inches long, and about two broad. Seeds generally from four to eight, smooth; grey, size of a large chestnut."

The *Jonesia* flowers at the beginning of the hot season, and its seeds ripen during the rains. The plants and seeds were originally brought to Calcutta from the interior parts of the country, where it is indigenous. **N.B.** Many of the flowers have only the rudiment of a pistil. In Plate XXX. A is a branchlet of the natural size. B, A single flower a little magnified; a a the calyx. C, A section of the same, exhibiting four of the filaments, 1 1 1 1 the pistil 2, and how far the tube is perforated. D, A similar section of one of the abortive flowers; 3 is the abortive pistil. E, The ripe legume opening near the base, natural size. **Note.** The space between the b and c marks the original tube of the coral. F, One of the seeds, natural size. G, The base of the common petiole, with its stipule; a a, the petioles of the lower pair of leaflets.