studded with a constellation of little glands, which pour forth, and almost deluge it with nectar; the stigma is composed of five little round knobs: seed vessels we have not seen. [Footnote 2: What the use of this very extraordinary apparatus may be we can at present scarcely conjecture, future observation may perhaps enable us to speak more decisively; when we figure the _Diosma ericoides_ we shall probably have more to say of this species.] [274] BORBONIA CRENATA. HEART-LEAVED BORBONIA. _Class and Order._ DIADELPHIA DECANDRIA. _Generic Character._ _Cal._ acuminato-spinosus. _Stigma_ emarginatum. _Legumen_ mucronatum. _Specific Character and Synonyms._ BORBONIA _crenata_ foliis cordatis multinerviis denticulatis. _Linn. Syst. Vegetab. ed. 14._ _Murr. p. 643._ _Ait. Kew. v. 2. p. 9._ FRUTEX _aethiopicus_ leguminosus, foliis rusci majoribus in ambitu spinulis fimbriatis. _Pluk. Alm. 159._ PLANTA leguminosa aethiopica, foliis rusci. _Breyn. Cent. t. 28._ _Borbonia_ is a genus of plants established by LINNAEUS in the 6th edition of his _Genera Plantarum_; of this genus there are six species enumerated in the 3d edition of the _Species Plant_. and two in the _Hort. Kew._ the latter of which, the _crenata_, introduced from the Cape by Mr. MASSON, in 1774, is here figured. It is a small shrubby plant, rarely exceeding the height of three feet, producing its flowers in a small cluster on the summits of the branches; these are of a yellow colour, and have nothing about them peculiarly singular, or beautiful; it is the foliage alone which renders this plant desirable in a collection. It flowers from June to August, and in favourable seasons ripens its seeds, by which the plant is usually propagated. [Illustration: No 274] [Illustration: No 275] [275] LIRIODENDRON TULIPIFERA. COMMON TULIP-TREE. _Class and Order._ POLYANDRIA POLYGYNIA. _Generic Character._ _Cal._ 3-phyllus. _Petala_ 6. _Sem._ imbricata in strobilum. _Specific Character and Synonyms._ LIRIODENDRON _Tulipifera_ foliis lobatis. _Linn. Syst. Veg. ed. 14._ _Murr. p. 507._ _Ait. Kew. v. 2. 250._ TULIPIFERA virginiana, tripartito aceris folio: media lacinia velut abscissa. _Pluk. Alm. 379. t. 117. f. 5. & t. 248. f. 7._ _Catesb. Carol. 1. p. 48. t. 48._ LIRIODENDRON foliis angulatis truncatis. _Trew. Ehret. t. x._ The Tulip-tree is a native of most parts of North-America, MARSHALL describes it as often growing to the size of a very large tree, 70 or 80 feet in height, and above 4 feet in diameter; he mentions two varieties, one with yellow and the other with white wood; that with yellow wood is soft and brittle, much used for boards, heels of shoes, also turned into bowls, trenchers, &c. the white is heavy, tough, and hard, and is sawed into joists, boards, &c. for building.