524 PROCEEDINGS OF THE AMERICAN ACADEMY. 



to 2,460 m., 1878 {Parry & Palmer, no. 730) : Mexico, Guadalupe 

 June 21, 18G5 {Bourgeau, no. 295) : Oaxaca, Valley of Cuicatlan, 

 alt. 2,000 to 2,460 m., Nov. 10, 18D4 {E. W. Nelson, no. 1898) ; San 

 Juan del Estado, alt. 1,800 m., Oct. 20, 1895 {L. C. Smith, no. 930) ; 

 Piipalo, Cuicatlan, alt. 1,650 m., Dec. 9, 1895 (V. Gonzalez, no. 42). 



Var. crenaea. Leaves narrower, oblong-lanceolate, blunt, rounded 

 or subcuneate at base. — *S^. scorodonia, Benth. PL Hartw. 20, not Benth. 

 Lab. 264. — A northern narrow-leaved extreme. Aguas Calientes 

 {Hartweg, no. 164): Chihuahua, southwestern section, without locality, 

 1885 {Ediv. Palmer). 



= = Pubescence of calyx long-villous, not glandular. 



104. S. LASIANTHA, Benth. Lab. 276, & in DC. 1. c. 321 ; Hemsl. 

 1. c, 559 ; Briq. 1. c. — Range of the last from which it differs only in 

 the more villous glandless calyx. Perhaps only a variety of that. 

 D.URANGO, Ramos to Inde, Aug., 1898 (E. W. Nelson, no. 4679) : San 

 Luis Potosi, in the mountains, San Rafael, 1876 {Schaffner, no. 671); 

 without locality, alt. 1,850 to 2,460 m., 1878 {Parry & Palmer, no. 

 731) ; limestone ledges, San Jose Pass, July 23, 1890, and limestone 

 hills, Las Canoas, Oct. 8, 1890 {0. G. Pringle, nos. 3206, 3273): 

 Hidalgo, calcareous hills near Tula, alt. 2,160 m., Oct. 5, 1896 (C G. 

 Pringle, no. 6538) : Oaxaca, near Dominguillo, alt. 2,000 m., Oct. 3, 

 1894 {E. W.Nelson, no. 1595). Placed by Bentham and by Briquet in 

 the section Erianthae. 



++ -M- Pedicels longer, 8 to 9 mm. long: racemes loosely flowered; verticels re- 

 mote : calyx tubular-campanulate, in anthesis 6 mm. or more long. 



= Calyx purplish-violet, glandular-villous, in anthesis nearly 1 cm. long : lower 

 lip of corolla almost black ; tube and galea pale. 



105. S. SEMIATRATA, Zucc. Abhandl. Baier. Akad. Wiss. i. 298; 

 Benth. in DC. I.e. 316; Hemsl. 1. c. 565; Briq. I.e. — Oaxaca, with- 

 out locality, June {Andrieux, no. 149); calcareous hills. Las Sedas, alt. 

 1,850 m., Aug. 2, 1894 {C. G. Pringle, no. 4763), alt. 2,150 m., June 

 27, 1895 {L. C. Smith, no. 413); near city of Oaxaca, alt. 1,600 to 

 2,100 m., Oct. 2, 1894 {E. W. Nelson, no. 1511). 



= = Calyx green (or blue-tinged), glandular-puberulent and minutely hispidulous 

 on the nerves, in anthesis about 6 mm. long : coralla blue. 



106. S. Gonzalezii. Branches very slender, somewhat villous, the 

 youngest parts and the rhachises glandular-puberulent : leaves broad- 

 ovate, bluntish at tip, truncate or subcordate at base, green and very 

 rugose, slightly pubescent above, white-villous beneath, crenulate, 1 to 



