114 LEGUMINOSAE. [ Leucaena. 
usually 2 or 3 together in the older axils, each bearing a single globular 
head of sweet-scented yellow flowers. Pod thick, irregularly cylindrical 
or fusiform, indehiscent, filled with a pithy substance, in the midst of 
which lie the seeds. — Benth. Fl. Hongk. p. 101. — Vachellia Farnes- 
tana, Wight & Arn. 
Of early introduction, but spread oyer all islands, Along the Pearl River inlet of 
Oahu it forms extensive thickets. Is supposed to be of American origin, bu t has become 
many ies. jards. 
Of introduced species A. Arabica, A. Catechu, A. pennata and A. cornigera are most 
frequently met with. A. lophantha, A. dealbata, A. mollissima, A. longifolia only thrive 
in the higher get of E. Maui and Hawaii. The nearly allied genus Albizzia, dist- 
in, h est e long monadelphous stamens, is represented by A. Lebbek, A. stipulata 
and A. proce 
24. LEUCAENA, Benth. 
Calyx 5-toothed. Petals 5, free. Stamens 10, free, all fertile. Anthers 
tipped with a gland. Pod broadly linear, flat, 2-valved. Seeds numerous, 
transverse. — Trees or shrubs. Leaves twice pinnate. Flowers in glo- 
bular heads, usually hermaphrodite 
A few a” nearly all American, of which the following has migrated to many 
warm countri 
+i. in ‘sii Benth. in Journ. Bot. IV, 416. — A small unarmed 
tree. Leaves with 4—6 pairs of pinnae. Leaflets in 10—20 pairs 
on each pinna, oblong-linear, very oblique and slightly falcate, 4—6” 
long, pale or glaucous underneath. Peduncles solitary or 2 or 3 to- 
gether in the upper axils, 1—11/2‘ long, the upper ones forming a terminal 
raceme, each bearing a globular head of 6—8”, or, with the stamens, 
d. 
Benth. Fl. Hongk. p. 100. — Acacia glawon, Willd. — A. leucocephala, 
Link. 
Of early introduction; frequent. 
: 25. MIMOSA, L. 
Calyx dentate. Petals more or less connate. Stamens as many or twice 
as many as the petals; anthers globose, without glands. Pod compressed, 
Jointed or continuous, the valves breaking away from the entire border 
or replum. — Herbs, shrubs or trees with bipinnate leaves. Flowers in 
pedunculate heads, red or white. 
A large genus, chiefly American. 
71. M. pudica, L. — DC. Prod. I, 426. — A low trailing, ‘rather 
herbaceous undershrub with infra-stipular and scattered priekiet hairy 
or acnot Leaves with 1 or 2 pairs of pinnae, each pinna with 15— 
pairs 0: oblong-linear pointed ciliate leaflets, which are ian back and 
folded te on touched, together with the pinnae and the petiole. 
Flower-heads pinkish, ovoid. ns as many as the petals, 4 or 5. 
