FERNALD. — MEXICAN SALVIAS. 515 



2. Young leaves canescent-tomentulose at least beneath : calyx simply 



campanulate. 



74. S. mazatlanensis. Stems slender, minutely puberulent or 

 glabrate : leaves rhombic-ovate or deltoid-ovate, with long acuminate 

 entire tips, and entire cuneate bases, otherwise coarsely appressed-serrate, 

 thin, dark green above, pale beneath, 2 to 4 cm. long, 1 to 3 cm. wide, 

 on slender petioles 2 cm. or less in length : racemes elongate, 0.5 to 2 

 cm. long ; verticels 2-10-flowered, all somewhat remote, the lowest 1 to 

 1.5 cm. apart : bracts lance-subulate, caducous : pedicels 2 to 4 mm. long: 

 calyx glabrate ; the tube twice exceeding the lobes ; upper lip broad- 

 ovate, entire, blunt and submucronate, the lower with ovate-lanceolate 

 acuminate lobes : corolla blue, 1 to 1.2 cm. long; galea pilose, nearly 

 equalling the lip. — Slnalo A, head of Mazatlau River, Jan., 1889 ( W. G. 

 Wright, no. 1298); Mazatlan, Dec. 29, 1894 (F. H. Lamb, nos. 

 351, 355). Lamb's no. 395 from Villa Union has thicker leaves and 

 puberulent calyx, and may not belong with the Mazatlan plant, 

 though it is nearer related to that than to any other species. 



b. Calyx in anthesis 5 to 6 mm. long. 



1. Branches cinereous : leaves cinereous-puberulent beneath, rhombic-ovate, 

 coarsely crenate-serrate : racemes rather loosely flowered, 1 to 3 dm. long; 

 verticels 2-15-flowered : calyx tubulose-campanulate, somewhat pilose on the 

 nerves. 



75. S. jaliscana, Briq. 1. c. 141. S. albiflora, Gray, Proc. Am. 

 Acad. xxi. 408, not Mart. & Gal. S. albiflora, forma caerulescens, 

 Gray, 1. c. S. albiflora, var. caerulescens, Gray, ace. to Wats. Proc. Am. 

 Acad. xxii. 445, in part. — Western Mexico. Chihuahua, shady ravines 

 near Batopilas, 1885 (Edw. Palmer, nos. 96, 154, 157) : Jalisco, in 

 ravines and by shaded roadsides, Guadalajara, Sept., 1886 {Edw. Palmer, 

 no. 488) ; by streams near Guadalajara, Nov., 1888 (C. G.Pringle, no. 

 1798). ' 



2. Leaves glabrous, glabrate, or merely pubescent on the nerves beneath. 



O Leaves and calyces strictly glabrous : leaves with long-acuminate tips : calyx 

 with short broad generally mucronate-tipped lobes. 



76. S. albiflora, Mart. & Gal. I.e. 76; Benth. in DC. 1. c. 307; 

 Gray, Syn. Fl. 1. c. 370; Hemsl. 1. c. 552; Briq. in Engl. & Prantl, 

 1. c. — Arizona to Venezuela. Sonora, moist places, Magdalena, Oct., 

 1857 (Geo. Thurber, no. 907) : Vera Cruz, Tolosa, Dec. 24, 1898 

 (0. C. Deam, no. 57): Oaxaca, Santo Domingo, alt. 290 m., June 12, 

 1895 (E. W. Nelson, no. 2668). 



