170 MIMOSACEAE. 



Mimosa pudica L., Sensitive Plant, tropical American, a low shrub, its 

 extremely sensitive leaves folding down when touched, its small purple flowers 

 in heads, has been grown in gardens for interest. 



Albizzia Lebbeck (L.) Benth., Black Ebony, of tropical Asia and Africa, 

 naturalized in the West Indies, a large tree with smooth bipinnate leaves, 

 numerous obliquely oblong leaflets l'-2' long, capitate yellow flowers with 

 long stamens and very large thin flat several-seeded pods often 8' long and nearly 

 2' wide, shining when old, is frequently planted for shade and ornament. 

 [Mimosa Letheck L.] 



Acacia arabica (Lam.) Willd., Yellow Mimosa, erroneously called Gum 

 Arabic, a spiny tree with many globular heads of small yellow flowers, followed 

 by flat moniliform elongated pods, has been formerly planted for ornament, 

 but no tree has been seen by us in Bermuda. [Mimosa arahica Lam.] 



Acacia macracantha H. & B., West Indian, is recorded by Lefroy as 

 spontaneous from seeds in soil from the West Indies in 1874, and became a 

 flourishing tree; H. B. Small records its existence there at the time of his 

 writing, but I did not see it. 



Acacia dealbata Link, Silver Wattle, Australian, seen at Wood Haven 

 in 1914 as a young plant 5° high, becomes, in Australia, a large tree; it has 

 pubescent, bipinnate leaves of very many minute leaflets. 



Another Acacia, growing at Wood Haven the same year, has crowded ovate 

 leaves only 3"-4" long, obtuse and nearly sessile. 



Inga Inga (L.) Britton, record of which is made by Lefroy of failure to 

 grow is a forest tree of the West Indies with simply equally pinnate, pubescent 

 leaves, the leaflets large, the flowers capitate, the narrowly linear pod 4-ribbed; 

 the tree is also recorded as Bermudian by Jones. [Inga vera Willd.; Mimosa 

 Inga L.] 



Pithecolobium Unguis-cati (L.) Mart., Cat's-claw, West Indian, a small 

 densely branched tree, its leaves each with two pairs of thin blunt obovate 

 veiny leaflets, small flowers in racemed heads, and coiled pods, is occasional in 

 parks and gardens. [Mimosa Unguis-cati L.] 



Enterolobium Saman (Jacq.) Prain, Guango, Rain-tree, Algarroba, of 

 tropical America, is a large tree, with bipinnate leaves 1° long or more, the 

 numerous, blunt, obovate leaflets 6"-8" long, glabrous above, pubescent be- 

 neath, a small round gland on the rachis between eaC-h pair of pinnae ; the 

 small, dense umbels of flowers are borne on long pubescent peduncles, short- 

 pedicelled, the calyx pubescent, 3" long, the silky-villous corolla 5"-6" long, the 

 pinkish stamens nearly 2' long; the pod is linear, 4'-8' long, tardily dehiscent. 

 The tree is occasionally planted. A specimen at Radnor had a trunk circum- 

 ference of 5° 8' in 1914. [Mimosa Saman Jacq.; Pithecolobium Saman Jacq.] 



Vachellia Farnesiana (L.) W. & A., Aroma, Tropical American, a shrub, 

 or small tree, with stipular spines, bipinnate, somewhat pubescent leaves with 

 many leaflets 2"-3" long, globose, peduncled heads of many small yellow flowers 

 with exserted stamens, and woody somewhat compressed pods 2'-4' long, is 

 occasionally planted for ornament. [Acacia Farnesiana L.] 



Prosopis juliflora (Sw.) DC, Mesquite, West Indian, was represented by 

 young plants in the collection at the Agricultural Station in 1914. It forms a 

 tree, up to 40° high, wnth bipinnate leaves, the leaflets small, oblong and blunt, 

 the very sinall yellowish flowers in long spikes, the curved, linear pods 8' long 

 or less. ^Mimosa juliflora Sw.] 



Seeds of Entada, West Indian, are often washed ashore, but none are 

 known to have ever germinated; they are borne in enormous pods on high- 

 climbing woody vines, which grow along rivers. 



