STANDLEY TREES AND SHRUBS OF MEXICO. 499 



" cozquelite " (Reko) ; " purenchequa," " pureque " (Michoacjln, Tarascan) ; 

 " tzinacanquahuitl " ; " chijol " (from the Nahuatl chi-xo-Ui, " swollen -pod," 

 Reko); " chocolin " (seeds); " pichoco " ; " jiquimite," " iquimite " ; " peoniu " 

 (Jalisco, Chihuahua); " chilicote '' (Chihuahua); " chottza," " deinthy " 

 (Otomi, Buelna). 



One species of doubtful determination is figured, without description, by 

 Hernandez ' under the name " macayxtli." 

 Standard petals very broad, oval. Calyx bilobate; seeds brown. 



1. E. breviflora. 

 Standard narrow, linear or linear-oblong. 

 Fruit and ovary aculeate. 



Calyx dentate 2. E. setosa. 



Calyx cleft on one side at the apex, not dentate 3. E. leptorMza. 



Fruit and ovary not aculeate. 



Calyx cleft on one side at the apex, or conspicuously bilobate. 



Calyx cleft on one side at the apex 4. E. rubrinervia. 



Calyx bilobate 5. E. montana. 



Calyx truncate. 



Standard densely lanate or tomentulose. 



Seeds about 8 mm. long; standard 7 cm. long; fruit deeply constricted 



between the seeds 6. E. lanata. 



Seeds about 12 mm. long; standard 5 to 5.5 cm. long; fruit shallowly 



constricted between the seeds 7. E. occidentalis. 



Standard glabrous or nearly so. 

 Leaflets, at least the terminal ones, conspicuously sinuate-Iobate. 



8. E. herbacea. 

 Leaflets never lobate. 



Seeds about 15 mm. long ; leaflets usually rounded or very obtuse at 



apex 9. E. flabelliformis. 



Seeds about 10 mm. long; leaflets usually acute or acuminate at 

 apex. 

 Standard 8 cm. long; fruit deeply constricted between the seeds; 



leaflets aculeate beneath 10. E. goldmanii. 



Standard 6.5 cm. long or shorter; fruit only slightly constricted 

 between the seeds; leaflets not aculeate 11. E. americana. 



1. Erythrina breviflora DC. Prodr. 2: 413. 1825. 

 Erytkrina latiflora Sesse & Moc. PI. Nov. Hisp. 55. 1SS7. 

 Erythrina petraea T. S. Brandeg. Zoe 5: 247. 1908. 

 Jalisco to Morelos and Puebla ; type from Ayacapixtla. 



Shrub, 3 to 5 meters high, usually with spiny stems ; leaflets 8 to 19 cm. 

 long, broadly rhombic, pubescent beneath and often aculeolate along the veins, 

 short-pointed ; racemes short, rather few-flowered ; banner about 3 cm. long ; 

 seeds brown, about 17 mm. long. 



Specimens from San Luis Tultitlanapa, Puebla, are remarkable in having 

 leaflets only 2 to 3.5 cm. long, but the material appears to be properly refer- 

 able to this species. The shrub flowers when in full leaf. 



2. Erythrina setosa Mart. & Gal. Bull. Acad. Brux. 10 ^ 194. 1843. 

 Mountains of Oaxaca and perhaps elsewhere ; type from Regla and the eastern 



Cordillera of Oaxaca. 



Stems probably always herbaceous, about 60 cm. high, prickly, nearly glabrous ; 

 leaflets 6 to 12 cm. long, acute or acutish. glabrous or nearly so. acuhH)late 



' Thesaurus 382. 1651. 



