618 PROCEEDINGS OF THE AMERICAN ACADEMY. 



ovate-lanceolate acute lobes : corolla blue, 2 cm. long, the slightly pubes- 

 cent tube twice exceeding the calyx ; the blunt pilose galea one third as 

 long as the broad lip: style densely bearded. — Morelos, mountain 

 side at 2,150 m. alt., near Cueruavaca, Aug. 9, 1898 (C. G. Pringle, 

 no. 7G43). 



•^+ t-H. Stems and leaves glandular-pilose, hardly setulose. 



85, S. villosa. Stems 2.5 to 3 dm. high, glandular-pilose below, 

 densely glandular-villous above and on the rhachis : leaves thick, pale 

 green or cinereous, deltoid-ovate, mostly blunt at tip, subtruncate at base, 

 entire or obscurely undulate, 1.5 to 3 cm. long, on cinereous-pubescent 

 petioles 0.5 to 1.5 cm. long, the upper subsessile : peduncles 0.5 dm. 

 long ; verticels 3-6-flowered, all becoming remote, the lowest 2.5 to 3 

 cm. apart : bracts ovate, acuminate, setulose : pedicels slender, 2 to 3 

 mm. long: calyx blue-tinged, viscid, pilose-setulose, in anthesis 6 to 7 

 mm, long ; the tube slightly longer than the lips ; upper lips ovate, acumi- 

 nate, entire, lower with two ovate acuminate lobes: corolla violet, 1.8 

 cm, long; the glabrous tube slightly exserted ; the puberulent galea one 

 third as long as the broad lip : style bearded, — San Luis Potosi, rare 

 in the mountains, San Miguelito, 1876 (Schaff'ner, no. 678), 



+++-(■++ Stems and leaves mostly glabrous or puberulent or only sparingly 



setulose. 



= Upper lip of calyx tridentate. 



a. Calyx-tube hispid : leaves from orbicular to ovate-triangular, 3 to G cm. long, 



2 to 4 cm. broad. 



86, S, GLECHOMAEFOLiA, HBK. 1. c. 290, t. 141 ; Benth. in DC. I.e. 

 306 ; Hemsl, 1. c. 556 ; Briq. 1. c. — South central and southern Mexico. 

 San Luis Potosi, alt, 1,850 to 2,460 m., 1878 (Parry & Palmer, no. 

 756) : Oaxaca, near Reyes, alt. 2,060 to 3,070 m„ Oct, 20, 1894 {K W. 

 Nelson, no. 1794). Originally from near Guanajuato, 



b. Calyx glabrous or minutely puberulent : leaves narrowly ovate-triangular, 1 to 



1.75 cm. long. 



87, S, FoRRERi, Greene, Pittonia, i. 156. — Durango, Sierra Madre, 

 west of Durango, alt. 2,500 m., Sept., Oct., 1881 {A. Forrer). 



= = Upper lip of calyx entire, subulate-tipped ; calyx densely white-pubescent 

 with long fine viscid spreading bairs. 



88, S, prunifolia. Stems puberulent, decumbent, assurgent only at 

 the tips, 3 to 5 dm. long : leaves orbicular to obovate, rounded or acutish 

 at tip, round or cuneate at base, crenate-serrate, the uppermost largest, 

 3 to 5 cm, long, 2.5 to 3,5 cm. broad, the lowest much smaller, dull green, 



