PERKINS THE LEGUMINOSAE OF PORTO RICO. 143 



oval gland above its base; flowers white, pedicellate, in long-peduncled clusters; 

 calyx 6 mm. long; corolla 9 mm. long; legume flat-compressed, indehiscent or the 

 valves tardily separated, glabrous 18 to 36 cm. long, 2.5 to 3.5 cm. wide. 



Seemingly spontaneous and cultivated near Bayamon; near Catano; near Yabucoa 

 on the coast; near Coamo along roads toward Banos; near Mayaguez at Algarrobo. 

 Bahama, Cuba (Grisebach), Jamaica, Haiti, St. Thomas, St. Croix, St. Martin (Stock- 

 holm herbarium), Antigua (Grisebach), Guadeloupe, Martinique, St. Vincent, Bequia 

 (Kew Bull. no. 81, p. 250), Trinidad, Curacao. Native country, southern and eastern 

 Asia, tropical Africa. 



Albizzia lebbek is an ornamental tree that is exceedingly good for avenues. Its roots 

 do not penetrate very deep. It grows rapidly, flourishes in almost any soil, and may 

 be propagated by cuttings. The wood seasons, works, and polishes well and is fairly 

 durable, while the bark is used as a tan bark. From this tree is procured a gilm that 

 is said not to be soluble in water, but to merely form a jelly; it resembles gum arabic. 



Local names, amor platonico, Jlamboydn. The last name is used for Albizzia lebbek, 

 as well as for Poinciana regia, according to Urban. 



4. CALLIANDRA Benth. 



Anneslia Salisb. Parad. Lond. pi. 64. 1807. 



Annesleya G. Don, Hist. Dichl. PL 2: 396. 1832, as section. 



Calliandra Benth. Hook. Journ. Bot. 2: 137, 138. 1840. 



Flowers 5 or 6-merous, polygamous; calyx campanulate, toothed, rarely deeply 

 divided; corolla campanulate or funnel-form, segments united to the middle; 

 stamens indefinite, connate at the base or beyond it, much exserted, glandular-hairy, 

 the anthers rarely glabrous; legume linear, straight or somewhat curved, narrowed at 

 the base, flat, continuous, the sutural margins prominent, seldom terete, 2-valved, the 

 valves separating elastically from apex to base. Shrubs or small trees, usually armed; 

 stipules membranaceous or foliaceous, persistent, sometimes transformed into thorns; 

 leaves bipinnate; flowers showy, red or white, often with very long stamens, solitary 

 or axillary. 



KEY TO THE SPECIES. 



Shrub, unarmed; pinnae 2 to 4-jugate; leaflets 10 to 25-jugate; 

 calyx deeply toothed, ciliate on the margin; petals united 

 only a little above the base, outside glabrous. 1. C. portoricensis. 



Shrub, armed; pinnae 1-jugate; leaflets 4 to 9-jugate, rarely 13- 

 jugate; calyx shortly toothed, glabrous; corolla united two- 

 thirds or three-fourths of its length, outside densely sericeous- 

 pilose. 2. C. haematostoma. 

 1. Calliandra portoricensis (Jacq.) Benth. 



(Urban, 265.) 



Shrub 1 to 4 meters high or tree 8 meters high, unarmed; leaflets linear or linear- 

 oblong, 5 to 12 mm. long, glabrous; peduncle very slender; flowers white; calyx 2.5 

 mm. long; corolla 10 mm. long; legume linear, straight, 7 to 12 cm. long, 8 mm. wide, 

 chartaceous, glabrous. 



In woods and copses near Bayamon; near Fajardo on Mount Mula; near Juncos on 

 calcareous mountains toward Florida, near Humacao; near Maunabo on Mount Mala 

 Pasqua; near Cayey on the upper and lower Maton River and at Plana] e and on Mount 

 Cedro; near Coamo at Farajones, near Penuelas on calcareous mountains near Tallaboa- 

 Poniente; near Guanica at El Maniel; in moist land on the edge of the forest between 



25734 vol 10, pt 407 2 



