LEGUMIN0S2E-C/ESALPINIE2E. 77 



because its stipitate gynseceum consists of a one-celled ovary sur- 

 mounted by a filiform style with a concave ciliate stigma, while its 

 anatropous suspended ovule, whose micropyle looks upwards and 

 outwards, becomes an oval exalbuminous seed with a fleshy embryo 

 and straight radicle in the short oval compressed bivalve fruit. 

 But the flower is otherwise altogether similar to that in any of the 

 sections Pomaria, Cladotrichium, Hoffmanseggia, &c, of Ccesalpinia ; 

 we have the same concave receptacle lined with glandular tissue, the 

 same irregular imbricated calyx with a large anterior sepal enveloping 

 the rest, the same irregular corolla with the vexillary petal internal, 

 and the same perigynous androceum whose ten stamens have the 

 lower part of their declinate filaments covered with hairs. Again, 

 the alternate pinnate leaves of Zuccagnia, with their small leaflets, 

 are glutinous, as is the case with nearly the whole surface of the 

 plant ; and the flowers form racemes resembling those of Hoffman- 

 seggia. From all these reasons we conclude to regard Zuccagnia 

 as Ccesalpinia with a uniovulate ovary, simply-pinnate leaves, and 

 a one-seeded fruit ; the two last characters bringing it very near 

 the sections Pomaria and Paripinnaria of this genus. 



Parkinsonian has altogether the flowers of Ccesalpinia : the same 

 perianth, sexual organs, and cup-shaped receptacle. The style, how- 

 ever, is not dilated at the apex, but is more or less obliquely truncate, 

 while the fruit is very different. It is a rounded torulose elongated 

 pod, dehiscing more or less completely in two valves, and containing 

 at each of the dilatations of the rather thin pericarp a descending seed, 

 whose coats contain a fairly copious albumen, and an embryo with 

 its radicle superior. Parkinsonia consists of trees from tropical 

 America and South Africa, with bipinnate leaves of very peculiar 

 form, possessing a very short rachis, from either side of which 

 arises a secondary rachis bearing numerous leaflets. The stipules 

 are ill-developed or spinescent, and the flowers form axillary racemes. 

 Three species are known. 2 



Cercidium, 3 like Parkinsonia, differs but slightly in flower from 



1 Plum., Nov. Gen. Amer., 25.— L., Gen., 269.— Walp., Ann., ii. 411; iv. 594.— OLIT, 

 n. 513.— J., Gen., 347.— Lamk., Diet., v. 21 ; Fl. Prop. Afr., ii. 266. 



Suppl. iv. 302 ; III., t. 336.— DC, Mem. Legum., 3 Tul., Arch. Mus., iv. 133. B. H., ' 



t. 21, fig. 112; Prodr., ii. 486.— Spach, Suit. 570, 1002, n. 320.— Beti nop// lewm KABST., Fl. 



a Buffon, i. 107.— Endl., Gen., n. 6775.— Columb., ii. 25, t. 113.— Soopesia Hi.ui.. in 



B. H., Gen., 570, n. 321. Proceed. Ac. Nat. Sc. Philad. (part.), ex \ 



2 Jacq., Amer., t. 80.— H. B. K., Nov. Gen. Gray, ibid. (1862), 163. 

 et Spec, vi. 335. — ITarv. & Sond., Fl. Cap., ii. 



