202 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 



blue; calyx 5-parted, lobes equal; standard obovate, 6.6 mm. long, wings narrowly 

 oblong; keel snorter than the lobes of the calyx; pod 3.5 to 5 cm. long, 3.5 mm. wide, 

 slightly falcate, rusty-hirsute, terminated by a recurved beak; seeds yellow, oblong. 



Near Bayamon in grassy tracts; near Aibonito at Algarrobo; on precipices between 

 AibonitoandCoamo; near Barranquitas; in thickets on the Isabon River; nearUtuado 

 in thickets at Los Angeles; near Pepino, on shady declivities at Eneas; near Maricao 

 in thickets on the river bank; near Mayaguez among shrubs in moist meadows; near 

 Cabo Rojo in thickets. Cuba, Jamaica, Haiti. Tropical America. 



In the Antilles the leaves of T. uncinatus are used as a purgative and the flour of 

 the seeds for poultices to reduce inflammation. 



Local name, cresta de gallo bianco. 



55. ERYTHRINA L. 



Erythrina L. Sp. PI. 2: 706. 1753. 

 Mouricou Ad ans. Fam. 2: 326. 1763. 



Calyx bilabiate or spathaceous, slit down to the base on the lower side, the teeth 

 short or elongated; standard ample and elongated, erect or patent, subsessile or fur- 

 nished with a claw, not appendiculate at the base, wings short or none; keel much 

 shorter than the standard, shorter or longer than the wings, its petals often free; upper 

 stamen free or connate with the others below; anthers uniform; ovary stalked, multi- 

 ovulate; style subulate, incurved, beardless, with a small, terminal, subcapitate 

 stigma; pod stalked, linear, falcate, narrowed at the base and apex, compressed or 

 subterete, much constricted between the seeds, both sutures or only the upper one 

 splitting; seeds distant, ovoid or oblong. Trees, or at times almost herbaceous shrubs, 

 with thick, often aculeate branches; leaves pinnate with 3 leaflets; stipules glandular, 

 at the base of each leaflet; flowers large, usually scarlet, axillary or terminal, in 

 racemes or in small clusters in the axils ; bracts and bracteoles small or wanting. 



KEY TO THE SPECIES. 



Calyx broadly campanulate; keel gamopetalous; standard long- 



stipitate. 1. E. glauca. 



Calyx subtubulose, truncate; standard sessile or subsessile, 

 oblong. 



Keel petals free; keel short, a little shorter than the calyx; 



leaves chartaceous; seeds scarlet with a black spot. 2. E. corallodendron. 



Keel gamopetalous, long, only a little shorter than the stand- 

 ard; leaves membranous or subpapyraceous; seeds dark 

 brown. 3. E. micropteryx. 



1. Erythrina glauca Willd. 



(Urban, 302.) 



Tree 13 meters high; leaves 20 to 30 cm. long; leaflets broadly ovate, obtuse at the 

 apex, rotundate at the base, 9 to 12 cm. long, 8 to 8.5 cm. wide, coriaceous or charta- 

 ceous; racemes 15 to 20 cm. long; calyx 1 to 2 cm. deep; flowers deep saffron yellow; 

 standard 5 to 6.5 cm. long; wings 2.5 cm. long; keel 3 to 3.5 cm. long; pod sublignose, 

 17 to 25 cm. long, 1.5 cm. wide; seeds dark brown. 



Near Bayamon, on the bank of the river around Guinabo. Cuba (Grisebach), 

 Guadeloupe, Martinique, St. Vincent, Venezuela. Tropical America. 



The saffron-yellow flowers and the very long (sometimes 25 cm.) woody pods of /.'. 

 glauca are very striking. It has by far the deepest calyx of all the Porto Rican species. 



Local name, bucago. 



