This species of Hillia was first introduced to our gardens in the year 1789, from the Island of Barbadoes, sent in plants, by Mr. J. Elcock, to Messrs. Lee and Kennedy, Hammersmith. Originally this shrub was specifically termed, _parasitica_ by professor Jacquin, when he first formed, and titled the Genus, after Dr. J. Hill, of voluminous memory; from a supposition that it was to be found growing, only, upon some other plant; a circumstance, which being denied by Swartz, he has altered it to _longiflora_. We have followed the latter name that ours may go in unison with the author of the last Species plantarum now publishing by Willdenow, as well as professor Martyn, who in his edition of Miller’s Dictionary has followed Swartz; they appearing to be the most accurate, as well as the most read and followed of any modern Botanical authorities. It is a tender hot-house plant, strikes easily from cuttings, thrives in rich mould and flowers about the end of February. To the Right Hon. Lord Viscount Valentia we are indebted, for the specimen from which our figure was taken, sent from his Lordship’s famed collection at Arley near Bewdley, Staffordshire; where, we believe, it has flowered for the first time in England. [Illustration] PLATE CXLVI. PSORALEA ACULEATA. _Prickly Psoralea._ CLASS XVII. ORDER IV. _DIADELPHIA DECANDRIA._ Chives in two sets. Ten Chives. GENERIC CHARACTER. CALYX. Perianthium monophyllum, tuberculis punctatum, quinquesidum; laciniis acutis, æqualibus, persistentibus; infima duplo longiore. COROLLA papilionacea, pentapetala. _Vexillum_ subrotundum, emarginatum, assurgens. _Alœ_ lunulatæ, obtusæ, parvæ. _Carina_ dipetala, lunulata, obtusa. STAMINA. Filamenta diadelpha (simplex setaceum et novem coalita), adscendentia. Antheræ subrotundæ. PISTILLUM. Germen lineare. Stylus subulatus, adscendens, longitudine staminum. Stigma obtusum. PERICARPIUM. Legumen longitudine calycis, compressum, adscendens, acuminatum. SEMEN unicum, reniforme. EMPALEMENT. Cup one leaf, dotted over with small tubercles, and five-cleft; the segments equal and remaining, the lower one twice the length of the others. BLOSSOM butterfly-shaped, five petalled. _Standard_ nearly round, notched at the end, turned upwards. _Wings_ half-moon-shaped, obtuse, small. _Keel_ two-petalled, half-moon-shaped, obtuse. CHIVES. Threads in two sets (a single one like a bristle, and nine united), ascending. Tips nearly round. POINTAL. Seed-bud linear. Shaft awl-shaped, ascending, the length of the chives. Summit blunt. SEED-VESSEL. A pod the length of the cup, flattened, ascending, and tapered to the point. SEED, one, kidney-shaped. SPECIFIC CHARACTER. Psoralea foliis ternatis, minimis, confertissimis, recurvatis, in spinulam desinentibus. Psoralea with three-leafletted leaves, very small, very crowded, bent back, and ending in a small spine. REFERENCE TO THE PLATE. 1. The Empalement. 2. The Standard of a Blossom.