520 PROCEEDINGS OF THE AMERICAN ACADEMY. 



in fen thesis 6 to 7 nun. long; tin- tube twice or thrice exceeding the 

 lance-Babul ate teeth; upper li|> tridentate: corolla 1.2 cm. long, short- 

 pilose, the ■ about equalling the lip: stylo slightly bearded. — 

 Mexico, without locality {Coulter, no. L120). 



— — I. ivea narrowly triangular-ovate, truncate or slightly cordate at base, on 

 thickisfa winged petioles, closely and densely white-pubescent beneath. 



92. S. i LNDICANS, Mait. & Gal. I.e. 61 ; Uenth. I.e. 815 ; II 



I.e. 554; Iii-iii. 1. c. — Puebla, limestone hills between Tehnacan ami 

 Esperanza, alt. 2,000 m., Dec. 21, 1895 (C. G. Pringle, no. 6245). 



Essentially the type station of t lie species. 



****** Leaves narrow-ovate or oblong, attenuate at base to short petioles, or the 



upper BubBessile. 



= Calyx ovate tubular, with short blunt lobes, glandular-pubescent, in anthesis 5 

 to 6 mm. long: leaves closely white-pubescent beneath. 



98. S. THYMOIDES, Benth. Lab. 255, & in DC. 1. c. 31 1 : II. msl. I. c. 

 566; Briq. I.e. — Southern Mexico. Puebla, limestone hills between 

 Tehuacan ami Esperanza, alt. 2,000 m., Dec. 21. 1895 (C. G. Prin 

 no. G251) : Oaxaca, Mitla ( G. Andrieux, no. L50) ; vicinity of ('<>i\r- 

 lahuaca, alt. 2,150 to 2,300 m., Nov. 12. 1894 {E. W. Nelson, no. 1915). 

 Species based in part on Amlrieux's plant. 



= = Calyx tubular-campanulate, with acuminate lubes, not glandular-pubescent, 



in anthesis 6 to 8 mm. long: haves sparingly stellate puberulent or glab- 

 rate. 



a. Leaves oblong. 1 to 2.6 cm. long, the uppermost subsessile. 

 1. Leaves finely stellate-puberulent at least when young. 



94. S. coahuilensis. Freely branching mostly from the stout 

 woody base; branches assm-;_ r ent, 0.5 to 7 dm. high; bark pale brown, 

 finely -tellate-puberulent or glabrate: leaves confined mostly to the lower 

 portions of the branches: racemes elongated, becoming 0.5 to :b5 dm. 

 long, the rhachis often glandular-puberulent ; verticels mostly 2-flowered, 

 all remote, the lowest 2 to 3 cm. apart: bracts ovate-oblong, acuminate, 

 caducous: pedicels filiform, 2 to -1 mm. long: calyx granulose-puberu- 

 lent ; tube twice exceeding the ovate-lanceolate subequal lobes ; upper 

 lip entire: corolla 1.5 cm. long, blue with white centre; the glabrous 

 tube nearly twice exceeding the calyx ; the slightly pilose galea one half 

 as long as the broad lower lip. — S. chamaedryoides, Wats.. Pr c. Am. 

 A id. xviii. 137, in part, not Oav. — COAHUILA, rocky hill. Sahillo, 

 1878 {Parry, no. 29), May, 1898 (Bdw. Palmer, no. 194); Parras, 

 June. 1880, and Lerios, duly, 1880 (Edto. Palmer, nos. 1072, 1064). 



