LEGUMINOSA-PAPILIONACEZ. 227 
little lateral bractlets, themselves rarely persistent. Some sixty 
species of 7ounatea are known,’ grouped by the most recent authors 
into five sections’ based on the form and dehiscence of the calyx, the 
form of the vexillary petal, and that of the stamens, especially as 
regards the anthers. 
Near Zounatea have been placed four genera, distinguished from 
it chiefly by the following characters. Aldina (figs. 205, 206) has 
the flowers of Zownatea, but with a nearly regular corolla of five or 
six segments. Hence it might perhaps be better to take this genus 
rather than Zounatea as the type of the section; its receptacle is 
Aldina latifolia. 
Fie. 205. Fig. 206. 
Flower. Longitudinal section of flower. 
also nearly regular, cup-shaped, and lined by a thick disk, external 
to which are inserted the pieces of the perianth and androceum. 
Zollernia has also nearly regular flowers (figs. 207, 208), with five 
equal or nearly equal petals, and from nine to fifteen stamens. The 
flower-buds are elongate and acuminate. The leaves are reduced to 
a single leaflet. The depth of the receptacle, too, is reduced, so that 
the insertion of the perianth and androceum becomes nearly 
hypogynous. Hzostyles has nearly the flower of Zollernia, but with 
1 Vetzoz., Fl. Flum., xi. t. 17, 18, 19 (?), 22, Brnra., in Hook. Journ, ii. 87.— WAtP., Rep. 
23 (Mimosa).—Vaut., Ic. Amer., t. 9; Ecl. i. 841; v. 563; Ann,, ii, 446. 
Amer., t. 20; Symb., t. 34.—DEsvx., in Ann. 2 1. Cyathostegia (BenTH.); 2. Dithyria 
Se. Nat., sér. 1, ix. 424.—DC., Mém, Légum.,  (BENTH.); 3. Eutounatea; 4. Possira; 5. Fis- 
t. 58-60.—Detess., Icon. Sel., iii. 42, t.74.—  tudoides (see below, Gen., n, 289). 
Q 2 
