510 PROCEEDINGS OF THE AMERICAN ACADEMY. 



2. Racemes longer, slender : pedicels 2 to 3 mm. long, equalling the calyx. 



56. S. FiLiPES, Benth. 1. c. ; Hemsl. I.e. 556. S. polystachya, var., 

 Benth. PI. Hartw. 50, not S. poJijstachya, Ort. Described from Regla. 

 Not seen. 



b. Racemes short, simple, solitary, or paniculate, with some remote lower verticels 

 in tiie axils of the upper foliar leaves : calyx hispidulous, with short deltoid- 

 subulate teeth. 



57. S. menthiformis. Tall herb, 6 to 8 dm. high : stems strongly 

 angular and furrowed, cinereous-puberuleut, freely branching : leaves 

 ovate or orbicular-ovate, acuminate, round-cordate at base, crenulate- 

 serrate, 1.5 to 5 cm. long, 1 to 3.5 cm. broad, dark green and glabrate 

 above, pale and minutely puberulent or glabrate beneath, on slender 

 ciuereous-puberulent petioles 1 to 2 cm. long ; raceme, excluding the 

 remote axillary verticels, 2 to 5 cm. long ; the crowded verticels 6-20- 

 flowered : pedicels barely 1 mm. long : corolla blue, pilose, 1.2 cm. long; 

 the tube twice exceeding the calyx ; the lip hardly equalling the galea : 

 style glabrous or slightly bearded. — S. polystachya, Donnell Smith, 

 Enum. PL Guat. iv. 126, not Ort. S. purpurea, Donnell Smith, 1. c. in 

 part, not Cav. — Costa Rica, Cartago, alt. 1,300 m., Oct., 1887 {Juan 

 J. Cooper in exsicc. J. D. Smith, no. 5902) ; San Francisco de Guada- 

 lupe, alt. 1,200 m., Jan., 189^ {A. Tonduz, no. 1781); Rio Turrialba, 

 Prov. Cartago, alt. 500 m., March, 1894 {J. D. Smith, no. 4919). 

 Habitally resembling forms of Mentha aquutica. 



c. Racemes simple, with no axillary lower verticels. 



1. Raceme spiciform, densely flowered, 4 to 10 cm. long: leaves broad-ovate, 1 

 dm. long, 6 dm. wide, on long petioles: corolla white. 



58. S. Cataria, Briq. Ann. Conserv. Jard. Bot. Geneve, ii. 142. 

 Described from Costa Rica, No specimen seen. 



2. Raceme elongate, loosely-flowered, at least the lower verticels remote. 



O Leaves broad-ovate, glabrous, coarsely and irregularly serrate : pedicels 2 to 4 



mm. long. 



59. S. brachtodonta, Briq. 1. c. 149. S. albijlora, var. caerules- 

 cens, Gray in Wats. Proc. Am. Acad. xxii. 445, in part. — Jalisco, 

 on sides of cafions, Rio Blanco, Sept., 1886 {Edw. Palmer, no. 598); 

 hillsides near Guadalajara, Sept. 27, 1889 {G. G. Pringle, no. 2463). 

 Placed by Briquet under the group Cordifoliae, Benth., but the leaves 

 are rounded-truncate at base, not cordate, and in habit as well the plant 

 much more resembles members of the Vulgares. 



