502 PROCEEDINGS OP THE AMERICAN ACADEMY. 



S. angustifolia, var. glabra, Wats. Proc. Am. Acad, xviii. 138, in part, 

 not Gray. — San Luis Potosi, without locality, alt. 1,840 to 2,460 m., 

 1878 {Parry & Palmer, no. 760). 



2. Leaves oblanceolate, pinnately nerved. 



33. S. firma. Steins decumbent at base, glabrous below, glandular- 

 pubescent in the inflorescence, 4 to 5 dm. high : leaves 4 to 8 cm. long, 0.5 

 to 2 cm. broad, acute or blunt at tip, cuueate at base, crenulate-serrate, 

 thick and firm, glabrous, above sublucid : peduncles elongated, 1-2-brac- 

 teate ; racemes becoming 3 dm. long ; verticels all distinct, 3-6-flowered, 

 the lowermost 5 to 8 cm. apart : bracts short, broad-ovate, subulate-tipped : 

 pedicels short : calyx campanulate, in anthesis 5 to 6 mm., becoming 1 cm. 

 long ; tube twice exceeding the lobes ; upper lip broad-ovate, the teeth 

 subulate; lobes of the lower lip with long subulate tips: corolla 1.5 cm. 

 long, the tube slightly exserted, the dark blue lower lip with a pale spot 

 in its centre and twice exceeding the puberulent blunt galea : style 

 bearded. — S. glechomaefolia, Wats. I.e. not HBK. — Jalisco, on hill- 

 sides, Rio Blanco, June, 1886 (Udw. Palmer, no. 61). 



= = Upper lip of calyx entire. 



a. Glabrous : leaves oblong-lanceolate : bracts round, obtuse or short-mucronate. 



34. S. LAEVis, Benth. Lab. 251, & in DC. I.e. 303; Hemsl. I.e. 

 559; Briq. I.e. & in Engl. & Prantl, I.e. — Not seen. Described from 

 Mexico and from near Tlalpujahua, Michoacan. 



b. Pubescent : leaves elliptic-oblanceolate or narrowly obovate : bracts ovate, long- 

 attenuate. 



35. S. sinaloensis. Stems slender, 2 to 2.5 dm. high, slightly 

 branched, below short- hirsute, above and in the inflorescence densely 

 pubescent with long straight fine viscid hairs : leaves acutish, the upper 

 half appressed-serrate, the lower half subentire, subcuneate to a sessile 

 base or obscurely short-pe tided ; those of the main stem 3 to 4 pairs, the 

 uppermost largest, 3.5 to 6 cm. long, 1,25 to 2 cm. broad, above appressed 

 short-setulose or glabrate, beneath pale, minutely setulose on the nerves : 

 peduncle 6 to 9 cm. long, about equalling the leafy lower portion of the 

 plant; raceme becoming 1 dm. or so long; verticels 3-6-flowered, the 

 lower 4 cm. apart, the upper rather approximate : bracts pilose-hispid, 

 colored, soon deciduous : calyx densely pilose-hispid with fine viscid hairs, 

 in anthesis 5 to 7 mm. long; the tube twice as long as the broad abruptly 

 subulate-tipped lobes : corolla 1.5 cm. long, the tube slightly exserted, the 

 dark blue lip with a pale spot in its centre twice exceeding the puberu- 



