•" (, 1 PROCEEDINGS OF THE AMERICAN ACADEMY. 



leaves bluntish at tip, cuneate at 1 Kise to a long Blender petiole, coarsely 

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

 densely Bhort-pilose ; upper face dark green, puberulent or glabrate: 

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

 0.5 !•> 2 dm. long; verticels 8— 6-flowered, the lower 1.5 cm. apart, the 

 upper approximate: pedicels 8 mm. 'long, minutely white-pilose: calyx 

 ciliate on the strong nerves, narrowly campanulate, in 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, Salt illo, 

 Sept., 1898 [Edw. Palmer, no. 834). This as well as three other Bpecies, 

 >'. luiirvoltit/i, S. tillarfoUa, and S.hispanica, arc called chia by the Mex- 

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

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



*+ *+ Perennials, mostly decumbent at least at base. 



= The lower verticels becoming remote. 



'i. Corolla wlrite or pale: stem strongly decumbent or Bubrepent : leaves ovate- 

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



30. S. assurgens, HBK. Nov. Gen. & Spec. ii. 293; Bentb. I.e. 

 304; Ilemsl. 1. c. 553; Briq. I.e. — Michoacan, grassy hills near I'atz- 

 cuaro, July 18, 1892 (C. G. Pringle, no. 4150); Oct. 20, 1898 ( /•;. II'. 

 D. Hohoay, no. 3184) ; originally collected near the same town. alt. 2.100 

 in., by Humboldt & Bonpland. According to Kuntb the color of the 

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

 recently collected specimens Bhows any violet tinge. 



b. Corolla blue or violet. 



1. Pilose-hirsute : internodes sbort : leaves oblong to rhombic-ovate : calyx hispid 

 below, in anthesis 6 to 7 mm. long; tube equalling the lobes; upper lip triden- 

 tate or entire. 



40. S. prunelloides, HBK. 1. c. 289; Benth. I.e. 30."): Hemsley, 

 I.e. 563; Briq. I.e. 5. glechomaefolia, Wats. Proc. Am. Acad. wiii. 

 L 37, 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, n<>. 1098) ; limestone hills. Cameras 

 Pass, Sept 27, 1890 (C. G. Pringle, no. 3G81) : Nuevo Leon, Lerios, 

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

 A'. W. Nelson, no. 1651): Mexico, without locality, 1848-49 (Gregg, 

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



