ROBINSON AND GREENMAN. — GENUS GALEA. 27 



5,000 feet, Donnell Smith, no. 2345 ; Teocinte, Dept. Sta. Barbara, 

 altitude 2,500 feet, Heyde Sf Lax (no. 4199 of Donnell Smith's sets) ; 

 San Rafael, Dept. Zacatepequez, altitude 6,500 feet, Donnell Smith, no. 

 2332. One of the commonest species of S. Mexico and Central 

 America. 



Var. dentata. Coulter. Leaves with more pronounced dentation, 

 long caudate-acuminate : the floral oblong-linear, attenuate. — Bot. Gaz. 

 XX. 51. — Nebaj, Dept. Quiche, Guatemala, altitude 7,000 feet, Heyde S^ 

 Lux (no. 4506 of Donnell Smith's sets). Hither we would refer Nelson's 

 no. 2513, collected between Suchiotepec and Miahuatlan, Oaxaca. 



b. Inriorescences cymose-umbellate in tlie upper axils, togetlier forming a leafy 

 elongated or tliyrsoid panicle : involucre commonly calyculate with one or 

 more herbaceous bractlets. 



15. C. axillaris, DC. Shrub: leaves ovate-lanceolate or ovate- 

 oblong, attenuate-acuminate, sharply serrate. — Prodr. v. 673. Mocinna 

 serrata, Lag. Nov. Gen. 31. — Mexico, Hcenke ; Valley of Cordova, 

 Bourgeau, no. 1675; between San Luis Potosi and Tampico, Palmer, 

 no. 1111. Passes into 



Var. urticsefolia. Leaves shorter and relatively broader, ovate, 

 acute or acutish to barely acuminate, crenate-serrate. — Caleacte urtici- 

 folia, R. Br. Trans. Linn. Soc. xii. 109. Galea urticcBfolia, DC. 1. c. 

 674. — The commoner form, Mexico without locality, Gregg^ nos. 1002, 

 1042.; Orizaba, Schaffner, and A. Gray ; Wartenberg near Tantoyuca, 

 Huasteca, Ervendherg, no. 96 (passing to typical form) ; Colima, Palmer, 

 no. 1215 ; Jalisco, on rocky slopes near Guadalajara, Pr/w^'/e, no. 1788; 

 and in neighboring locality on Rio Blanco, Palmer, no. 675 (robust 

 form with ternate leaves) ; Guatemala on the Rio Amatitlan, altitude 

 3,900 feet, Donnell Smith, no. 2337, also Jumaytepeque, Dept. Santa 

 Rosa, altitude 6,000 feet, Heyde S^ Lux (no. 3790 of Donnell Smith's 

 sets) ; Costa Rica at Navarro, altitude 3,500 feet, Donnell Smith, no. 

 4857 ; Nicaragua, Wright. 



= = Heads subumbellate at the ends of the branches or from the upper axils, 

 discoid : Chiapas and southward. 



16. C. prunifolia, HBK. Shrub: leaves broadly elliptic-ovate, 

 crenate, obtuse, abruptly contracted to a subcuneate base, slender-peti- 

 oled, scabrous and rugose above, somewhat paler and scabrous beneath, 

 2 to 3^^ inches long, two thirds as broad: heads about 18-flowered. — 

 Nov. Gen. & Spec. iv. 294, t. 406. — A South American species 

 reaching the Isthmus of Panama, where collected by Seemann and later 

 by Hayes. 



