504 PROCEEDINGS OF THE AMERICAN ACADEMY. 



leaves bluntish at tip, cuneate at base to a long slender petiole, coarsely 

 crenate-serrate, especially above the subentire base ; margin and petiole 

 densely short-pilose ; upper face dark green, jjuberulent or glabrate ; 

 lower face paler, minutely pubescent : racemes very short-pedunculate, 

 0.5 to 2 dm. long; verticels 3-6-flowered, the lower 1.5 era. apart, the 

 upper approximate : pedicels 3 mm. long, minutely white-pilose : calyx 

 ciliate on the strong nerves, narrowly campanulate, iu anthesis 8 mm. 

 long ; the tube twice exceeding the ovate acuminate lobes ; upper lip 

 entire: corolla 1.3 to 1.5 cm. long, the white tube somewhat exserted ; 

 lips blue, the lower pubescent beneath, twice as long as the pubescent 

 upper one: style glabrous. — Coahuila, damp bottom-lands, Saltillo, 

 Sept., 1898 {Edw. Palmer, no. 334). This as well as three other species, 

 S. lanceolata^ S. tiliaefolia, and S. hispanica, are called chia by the Mex- 

 icans, and a cooling beverage known likewise by that name is prepared 

 from the seed. (See Rose, Coutr. U. S. Nat. Herb. v. 225.) 



•<-<• ■*-*• Perennials, mostlj' decumbent at least at base. 



= The lower verticels becoming remote. 



a. Corolla white or pale : stem strongly decumbent or subrepent : leaves ovate- 

 elliptic to oblong, glabrate : peduncle U.5 to 1.5 dm. long. 



39. S. ASSURGENS, HBK. Nov. Gen. & Spec. ii. 293 ; Benth. 1. c. 

 304 ; Hemsl. 1. c. 553 ; Briq. 1. c. — Miciioacan, grassy hills near Patz- 

 cuaro, July 18, 1892 (C. G. Pringle, no. 4150); Oct. 20, 1898 {E. W. 



D. Holway, no. 3184) ; originally collected near the same town, alt. 2,100 

 m., by Humboldt & Bonpland. According to Kunth the color of the 

 corollae is " pallide violacea ? (carnea ex Bonpl.)," but neither of the 

 recently collected specimens shows any violet tinge. 



h. Corolla blue or violet. 



1. Pilose-hirsute: internodes short: leaves oblong to rhombic-ovate : calvx hispid 

 below, in anthesis 5 to 7 mm. long; tube equalling the lobes; upper lip triden- 

 tate or entire. 



40. S. PRUNELLOiDES, HBK. 1. c. 289; Benth. I.e. 305; Hemsley, 

 I.e. 563; Briq. I.e. aS. glechomaefolia, Wats. Proc. Am. Acad, xviii. 

 137, not HBK. S. tricandra, Briq. Ann. Conserv. Jard. Bot. Geneve, 

 ii. 133. — Coahuila to Oaxaca. Coahuila, mountains 64 km. south of 

 Saltillo, July, 1880 {Edw. Palmer, no. 1098) ; limestone hills, Carneros 

 Pass, Sept. 27, 1890 {G. G. Pringle, no. 3681) : Nuevo Leon, Lerios, 

 July, 1880 {Edw. Palmer, no. 1097) : Durango, Cacaria, Aug. 5, 1898 



E. W. Nelsoyi, no. 4651): Mexico, without locality, 1848-49 {Gregg, 

 no. 406) ; cool slopes, Sierra de las Cruces, Aug. 21, 1892 ((7. G. Prin- 



