248 BLAKE: REVISION OF ICHTHYOMETHIA 



This Species, the commonest and most widely distributed of the 

 genus, has not previosuly been distinguished from I. piscipula. It is 

 readily separated, however, by the leaves, which in /. communis are 

 densely incurved-puberulous beneath, with the hairs along even the 

 ultimate veinlets parallel to the latter. In I. piscipula the leaves are 

 short-pilose with spreading-ascending hairs beneath, and the hairs 

 along the veinlets do not coincide with them in direction but lie across 

 them transversely. 



/. communis is called "haabi" by the Mayas of Yucatan, and "chijol" 

 by the Huastecan Indians of Tamaulipas and Veracruz. 



5. Ichthyomethia americana (Moc. & Sess^) Blake. 



Piscidia americana Moc. & Sess^, PI. Nov. Hisp. ii6. 1887. 



Tree; branchlets appressed-puberulous, soon glabrate; leaves 9 to 

 13-foliolate, 12 to 20 cm. long; petiole and rachis appressed-pubescent, 

 glabrescent, leaflets 4 to 8 cm. long, 1.7 to 4 cm. wide, oval-oblong or 

 elliptic-oblong or the terminal one obovate-oval, rounded or obtuse, 

 sometimes acute, rounded at base, pergamentaceous, above light green, 

 glabrous, beneath pale, evenly but not densely short-strigose, the hairs 

 on the costa and primary veins appressed to them, those on the sec- 

 ondary and tertiary veinlets and on the surface directed toward margin 

 of leaf, thus crossing the veinlets nearly at a right angle, and not more 

 numerous along than between them; panicles 8 to 24 cm. long, strigil- 

 lose ; pedicels 2 to 7 mm. long ; calyx 6 to 7 mm. long, cinereous-puberu- 

 lous with appressed hairs, the lobes of lower lip deltoid-ovate or broadly 

 deltoid, slightly overlapping near base, obtuse or rounded, rarely 

 acutish at tip; vexillum 15 mm. long, densely cinereous-puberulous 

 dorsally, in youth subsericeous; alae 15.5 mm. long (the claws 7 mm. 

 long), the laminae sparsely puberulous toward base; keel 15 mm. long 

 (the claws 7 mm. long), the petals puberulous below; vexillar stamen 

 free for one-third its length; fruit 1.5 to 7.5 cm. long, 1.8 to 4.3 cm. wide, 

 I to 6-seeded, appressed-puberulous, the glabrescent wings much wider 

 than the body, often undulate-divided, the stipe exceeding the calyx 

 by 6 to 12 mm. 



Type Locality: Apatzingan, Michoacan, Mexico. 

 Specimens Examined: 



Michoacan: Hacienda Guadalupe, near Rio Balsas, 1903, Nelson 

 6969. Nusco (Michoacan or Guerrero), 1899, Langlasse 936. 



Guerrero: La Junta, 1903, Nelson 6991. 



Guatemala: Naranjo, altitude 90 meters, 1892, /. D. Smith 2815. 



This species is called "tatzungo" or "zatzumbo" by the Tarascan 

 Indians of Michoacan, according to Modno and Sess6. In Guerrero it 

 is known by the native name "cocuile" and the Mexican names "colorin 

 de peces" and "matapez." Although there is little in the description 



