540 PROCEEDINGS OP THE AMEEICAN ACADEMY. 



acuminate, appressed-serrate quite to the base, dull aud minutely 

 puberulous above, pale aud glabrous beneath, on slender puberuleut 

 petioles 4.5 cm. or less in length : raceme simple, 1.3 dm. long ; the 

 rhachis and pedicels glandular and sparingly pilose; verticels 6-10- 

 flowered, all remote, the lowest 2.5 cm. apart : bracts caducous (not 

 seen) : calyx tubular-campanulate, slightly pilose on the nerves ; the 

 lobes setaceous-acuminate, the upper lip twice exceeding the 2-lobed 

 lower one, and twice exceeded by the tube : corolla 3 to 4 cm. long, the 

 moderately ventricose glabrous tube twice as long as the calyx ; the 

 pilose galea equalling the lip : style bearded. — ^S*. involucrata, Hemsl. 

 I. c. 558, in part, not Cav. — San Luis Potosi, alt. 1,850 to 2,460 m., 

 1878 {Parry & Palmer, no. 755). 



* * * Stoloniferous herb ; the subdeltoid or cordiform leaves confined chiefly to 

 the lower half: jjeduncle elongated, simple; verticels 2-G-flowered, remote: 

 corolla 5 cm. long. 



158. S. STOLONIFERA, Benth. PI. Hartw. 70, & in DC. 1. c. 333 ; 

 Ilemsl. 565; Briq. 1. c. — Oaxaca, Sierra de San Felipe, alt. 2,300 to 

 3,080 m., June 23, 1894 {G. G. Pringle, no. 4705, E. IF. Nelson, no. 

 1183); Telixtlahuaca, alt. 2,300 m., July 27, 1895 (Z. G. Smith, 

 no. 477). 



D. Gyaneae, Benth. Calyx tubulose-campanulate : corolla blue violet 

 or rose, straight ; the tube ventricose. 



* Corolla rose or rose-purple. 



H- Leaves hispid or pilose beneath. 



*+ Leaves rounded-cuneate at base: corolla 1.5 to 1.8 cm. long. 



159. S. PURPURASCENS, Mart. & Gal. 1. c. 69 ; Benth. in DC. 1. c. 

 335 ; Hemsl. 1. c. 5G4 ; Briq. 1. c. 283. — Described from Mt. Orizaba, 

 Vera Cruz. Not seen. 



*+ *-* Leaves cordate at base. 

 = Verticels 6-flowered : calyx 1.3 cm. long: corolla 3 cm. long. 



160. S. iodochroa, Briq. Ann. Conserv. Jard. Bot. Geneve, ii. 161. 

 — Described from Costa Rica. Not seen. 



= = Verticels 10-30-flowered : mature calyx 8 mm. long: corolla 1.5 cm. 



long. 



161. S. irazuensis. Tall and freely branching, the stem purple, 

 slightly crisp-pilose in lines, or glabrate ; the branchlets glandular-jiilose : 

 internodes long (1 dm.) : leaves cordate-ovate, acuminate, serrate, the 



