136 FLORA OF JAMAICA Mimosa 



generally several in each head, 3-6 cm. 1., 10-12 mm. br., flat, valves very 

 hispid, 10-20(-30) jointed. 



Browne (loc. cit.) states that this species was introduced from Panama, 

 "and is now cultivated in some of the gardens of the curious, but i- 

 yet rare."] 



43. LEUC)NA Benth. 



Trees. Gland in the middle of the petiole, or just below 

 the pinnae, or sometimes wanting, sessile, somewhat elliptical. 

 Flower-heads globose, white, stalked. Floral parts in 5's. Calyx 

 tubular-carnpanulate, toothed. Petals free. Stamens 10, free, 

 exserted. Pod shortly stalked, broadly linear, flat-compressed, 

 rigidly membranous, 2-valved ; seeds compressed, transverse to 

 the valves ; embryo enclosed on its two sides by a thin layer of 

 horny endosperm. 



Species 10, natives of tropical America, one occurring through- 

 out the tropics, spontaneous or cultivated, and one found in the 

 islands of the Pacific. 



Pinnae in 4-8 pairs 1. L. glauca. 



Pinnse in 10-25 pairs 2. L. brachycarpa. 



1. L. glauea Benth. in HooJc. Journ. Bot. iv. 416 (1842) ; 

 pinnae in 4-8 pairs, 6-8 cm. 1. ; leaflets in 10-12 pairs, oblong- 

 falcate, oblique, unequal-sided, glaucous or paler beneath, 7-12 

 mm. 1., 2-3 '5 mm. br. Benth. in Fl. Bras. xv. pt. 2, 391 & in 

 Trans. Linn. Soc. xxx. 443 ; Griseb. FL Br. W. Ind. 220 ; Sarff. 

 Silv. Hi. Ill, 1. 139 ; Cook & Coll. Contrib. U.S. Nat. Herb. mil. 175 ; 

 Urb. Symb. Ant. iv. 266. Mimosa glauca L. Sp. PI 520 (1753). 



Prior ; March ; Port Morant ; Lucea ; Hitchcock ; Hart ! Hope ; Papine ; 

 Harris ! Fl. Jam. 6713, 8367. Warmer regions of the New and the Old 

 World, probably of American origin. 



Shrub or slender tree 15-20 ft. high. Flower-heads (excl. stamens) 

 about 1*4 cm. in diam., with numerous flowers; peduncles axillary, 1, or 

 2-3 together, 3-5 cm. L, racemose at the end of the branches. Calyx 

 about 2-3 mm. 1. Petals 4-4 mm. 1. Stamens twice as long as petals. 

 Pods generally many in the same head, 10-15 cm. 1., 1-1 '7 cm. br. Seeds 

 numerous, oblong, 6 mm. 1., with a long thread-like stalk. 



This species grows in very dry places, and is sometimes browsed by 

 horses and mules, in which case the hair is affected, the mane and tail 

 dropping, and even the hoofs falling off, if eating the leaves is persisted in. 



2. L. braehyearpa Urb. Symb. Ant. ii. 265 (1900); pinnae in 

 10-25 pairs, up to 3 '5 cm. 1., leaflets in 25-55 pairs, linear- 

 oblong, acute, 2-4 mm. 1., '6 mm. br. 



Hope grounds, Campbell \ Westphalia, Watt ! Berwick, Fawcett ! 

 below Content Gap, St. Andrew, 3200 ft., ; near Guava Ridge, 3500 ft. ; 

 Harris \ Fl. Jam. 12,342, 12,393. Martinique, Mexico. 



Tree. Flower-heads (excl. stamens) about -8 cm. in diam., with 

 numerous flowers; peduncles axillary, generally 2 together, 1-2 cm. 1. 

 Calyx 1-5-2 mm. 1. Petals about twice as long. Pods 1-5 in each head, 

 6-11 cm. 1., 1-2 cm. br. 



