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
f