546 PROCEEDINGS OF THE AMERICAN ACADEMY. 



remote, the lowest 3 to 4 cm. apart : pedicels puberulent, 3 mm. loog : 

 calyx minutely puberulent or glabrate ; the tube thrice longer than the 

 lips ; upper lip broad-ovate, blunt or short-mucronate, lower with two 

 short incurved subulate teeth : corolla 3 to 3.25 cm. long, slightly curved, 

 short-jjilose ; the tube twice longer than the calyx ; the galea and lip sub- 

 equal : style glabrous or very slightly bearded. — Chiapas, in the forests, 

 flowering in June {Ghiesbreght, no. 760). 



* * Leaves rounded or cordate at base. {S. curvlflora may be looked for liere.) 



H- Leaves rounded or rounded-truncate at base, not definitely cordate. 



■t-f Leaves lanceolate, 1 to 1.5 dm. long. 



182. S. perlonga. Shrub with pilose-hispid branches : leaves thick, 

 with long-attenuate tips, crenulate-serrate, rugose and covered with short 

 dense plush-like indumentum above, canescent-velutinous beneath, on 

 canescent petioles 2 cm. or less long : racemes 1 to 2 dm. long ; verticels 

 2-8-flowered, all remote ; jjedicels and rhachis sordid glandular-pilose : 

 calyx purplish, glandular, pilose-hispidulous, in anthesis 1.3 cm. long, the 

 tube twice exceeding the blunt ovate entire lips : corolla vermilion, 3 cm. 

 long, the slightly ventricose tube twice exceeding the calyx ; the minutely 

 pilose lips subequal : style slightly bearded. — Guerrero, northeast 

 slope of Sierra Madre, near Chilpancingo, alt. 2,150 to 2,620 m., Dec. 24, 

 1894 {E. W. Nelson^ no. 2186). Further material may show this to 

 belong with the Fulgentes. 



++ ++ Leaves ovate or ovate-lanceolate, shorter. 



= Corolla purple rose-purple or flesh-colored. 



a. Leaves glabrous or only minutely puberulent beneath, not pilose (except slightly 



so in var. of S. purpurea). 



1. Branches canescent-velutinous : verticels 2-flowered. 



183. S. GRACiLiFLORA, Mart. & Gal. I.e. 75; Benth. I.e. 342; 

 Hemsl. 1. c. 557. — Described from Zacuapan. Not seen. 



2. Branches slightly pilose, puberulent or glabrous : verticels several-many- 

 flowered. 



O A pair of glands generally present at the base of the petiole : corolla' slender, 



puberulent, 2 to 2.75 cm. long. 



184. S. PURPURKA, Cav. Minutely puberulent or glabrous. — Ic. ii. 

 52, t. 166; Jacq. Hort. Schoenb. iii. 2, t. 253; Benth. I.e. 341; Hemsl. 

 I.e. 564; Briq. I.e. S. affinis, Cham. & Schl. Linnaea, v. 99; Benth. 

 1. c. ; Hemsl. 1. c. 552 ; Briq. 1. c. — Southern Mexico and Central Amer- 

 ica. Jalisco, Bolaiios {Hartweg., no. 161) : Morelos, Cuernavaca, 



