"Is propagated by parting of its roots, which must be done with caution; for, as the root is fleshy, if they are broken or wounded, the milky juice will flow out plentifully; so that if these are planted before the wounds are skinned over, it occasions their rotting: the best time for transplanting and parting of their roots is in July, soon after the stalks are decayed; the soil should he a light sandy loam, mixed with a fourth part of screened lime rubbish." Miller. FOOTNOTE: [4] Ait. Kew. [445] [Illustration: Nº. 445] Coronilla Emerus. Scorpion Senna. _Class and Order._ Diadelphia Decandria. _Generic Character._ _Cal._ 2-labiatus: 2/3: dentibus superioribus connatis. _Vexillum_ vix alis longius. _Legumen_ isthmis interceptum. _Specific Character and Synonyms._ CORONILLA _Emerus_ fruticosa, pedunculis subtrifloris, corollarum unguibus calyce triplo longioribus, caule angulato. _Linn. Syst. Vegetab. ed. 14._ _Murr. p. 669._ _Ait. Kew. v. 3. p. 57._ COLUTEA siliquosa _s._ scorpioides major. _Bauh. Pin. p. 1046._ Authors have given to this plant the name of Scorpion Senna, its seed-vessels, from their slender and jointed appearance, bearing some resemblance to the tail of a scorpion. It is a native of France and Germany, and a very old inhabitant of our gardens, having been cultivated by Gerard in 1596; it is of low and slow growth: there is a shrub of it in the Apothecaries Garden, Chelsea, which grew there in the time of Miller, and which now is not more than five feet high. In the nurseries we have observed two varieties of it, one in which the flowers have been tinged with bright red inclining to orange and which is by far the most common, the other with flowers wholly yellow, scarcely worth cultivating. Its blossoms are produced in May and June, and sometimes again in autumn; neatly trained to a wall or paling, it makes a beautiful appearance when in flower, the shortness of its shoots renders it a very proper object for this purpose. Is propagated by seeds, layers, and cuttings; the first are not produced in any great plenty with us. The leaves by a proper fermentation are said to produce a dye like that of Indigo. [446] [Illustration: Nº. 446] Psoralea Bracteata. Oval-Spiked Psoralea. _Class and Order._ Diadelphia Decandria. _Generic Character._ _Cal._ punctis callosis adspersus longitudine leguminis monspermi. _Specific Character and Synonyms._ PSORALEA _bracteata_ foliis ternatis obovatis recurvato-mucronatis, mucronatis, spicis ovatis. _Linn. Mant. 264._ _Berg. Cap. 224._ _Ait. Kew. v. 3. p. 79._ TRIFOLIUM fruticans. _Linn. Sp. Pl. ed. 3. p. 1085._ TRIFOLIUM africanum fruticans flore purpurascente. _Comm. Hort. 2. p. 211. t. 106._ The old authors, and indeed Linnæus himself at first, regarded this plant as a Trifolium; afterwards the latter changed it to _Psoralea_, and minutely described it in his _Mantissa_.