ROBINSON AND GREENMAN. — GENUS CALEA. oT 
5,000 feet, Donnell Smith, no. 2345; Teocinte, Dept. Sta. Barbara, 
altitude 2,500 feet, Heyde & Lux (no. 4199 of Donnell Smith’s sets) ; 
San Rafael, Dept. Zacatepequez, altitude 6,500 feet, Donnell Smith, no. 
2 ne 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 3 . 
Lux (no. 4506 of Donnell Smith’s sets). Hither we would refer Nelson’s 
no. 2513, collected between Suchiotepec and Miahuatlan, Oaxaca. 
6. Inflorescences cymose-umbellate in the upper axils, together forming a leafy 
elongated or thyrsoid panicle: involucre commonly calyculate with one or 
more herbaceous bractlets. 
i aes axillaris, DC. Shrub: leaves ovate-lanceolate or ovate- 
oblong, attenuate-acuminate, sharply serrate. — Prodr. v. 673. MMocinna 
serrata, Lag. Nov. Gen. 31.— Mexico, Henke; Valley of Cordova, 
urgeau, no. 1675; between San Luis Potosi and Tampico, Palmer, 
no. 1111. Passes into 
Var. urticzefolia. Leaves shorter and relatively broader, ovate, 
acute or acutish to barely acuminate, crenate-serrate. — Caleacte urtici- 
folia, R. Br. Trans. Linn. Soc. xii. 109. Calea urticefolia, DC. 1. ¢. 
74.— The commoner form, Mexico without locality, Gregg, nos. 1002, 
1042; Orizaba, Schaffner, and A. Gray; Wartenberg near Tantoyuca, 
uasteca, Ervendberg, no. 96 (passing to typical form) ; Colima, Palmer, 
no. 1215; Jalisco, on rocky slopes near Guadalajara, Pringle, 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 & Lux (no. 8790 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, 
‘renate, obtuse, abruptly contracted to a subcuneate base, slender-peti- 
led, scabrous and rugose above, somewhat paler and scabrous beneath, 
2 to 34 inches long, two thirds as broad: heads about 18-flowered. — 
Nov. Gen. & Spec. iv. 294, t. 406.— A South American species 
ea the Isthmus of Panama, where collected by Seemann and later — 
a 
