144 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



Barina and La Boca, and in the coast districts near Laguna; near Lares on declivities 

 at Barrio Piletas; near Quebradillas; between Isabela and Quebradillas; near Toa 

 Baja. Bahama (Hitchcock), Cuba (Grisebach), Jamaica, Haiti, Vieques (Eggers), 

 St. John, Grenada. Tropical continental America, tropical western Africa. 



This shrub yields a gum, copaltic, that is used as a medicament in the West Indies. 



Local names, cojobillo, morir vivir cimarron, zarza boba (Urban); acacia puertoriqucna 

 (Cook and Collins). 



2. Calliandra haematostoma (Bertero) Benth. 



(Urban, 265.) 



' Shrub, armed; 2 to 3 meters high; leaflets oblong, obtuse, 3 to 7 mm. long, glabrous, 

 subciliate; peduncle very short; stipules spiny or with spines at their base; corolla 

 5 mm. long; stamens red; anthers white; legume 8 to 10 cm. long, linear, villous- 

 pubescerit, coriaceous. 



Near Guayanilla, on calcareous rocks of the coast at Penon, rare. Bahama (Ben- 

 tham), Cuba (Bentham), Jamaica, Haiti, St. Thomas in Flaghill, not often found, with 

 flowers in October (Eggers). 



5. ACACIA Willd. 



Sassa Bruce; J. F. Gmelin, Syst. 2: 1038. 1791. 

 Acacia Willd. Sp. PL 4: 1049. 1806. 

 Phyllodoce Link, Handb. 2: 132. 1831. 



Flowers hermaphrodite or polygamous; calyx campanulate, toothed or lobed, the 

 sepals seldom distinct or wanting; petals free or united, more or less connate, rarely 

 united with the stamens, rarely wanting; stamens numerous, free or slightly and 

 irregularly consolidated at the base; ovary sessile or stipitatc, 1 to many-seeded; 

 legume oval, linear or oblong, straight, curved or twisted, flat, convex or terete, mem- 

 branous, coriaceous or woody, 2-valved or indehiscent, continuous or septate within, 

 rarely with pulp, very seldom separating into segments; seeds usually oval, compressed, 

 nil en with an aril. 



. Trees, rarely herbs, unarmed or with prickles or thorns; leaves bipinnate, with 

 multijugate leaflets, or reduced to a phyllodium; stem glands mere <ir less conspicuous; 

 stipules small or wanting, membranous, rarely transformed into a curved thorn; 

 flower-heads pedunculate, yellow, rarely white, 1 or 2-fasciculate in the axils of the 

 leaves, or racemose ai the extremities. 



KEY TO THE SPECIES. 



Armed. 



Ligneous plant, sometimes scandent; Btem, branches, and pe- 

 duncle armed with small recurved prickles; pinnae 6 to 12- 

 jugate; leaflets 15 to 10-jugate; legume'stipitate, 10 to 20 cm. 

 long, I to L.5 cm. wide, glabrous or glauco-tomentose, thin. 1. A.riparia. 

 Small live or shrub; stipular spines slender, straight: pinnae 

 '_! tn S; Leaflets 10 to 25-jugate; legume sessile, turgid, cylin- 

 drical or subfusiform, straight or curved, glabrous, 5 to 7 cm. 

 long, 9 mm. wide. 2. A. farnesiana. 



Unarmed. 



Tree; flowers spicate; pinnae I to 6-jugate; leaflets 10 to 16- 

 jugate, ovate-elliptic or broadly oblong, oblique, obtuse, at 

 Length coriaceous, 1 cm. Long, "> mm. wide. :'. .1. nudifiora. 



