5< PROCEEDINGS OF THE AMERICAN ACADEMY. 



Central Mexico. Dubango, infrequent on Bhady elopes of ravines, 

 Santiago Papasquiaro, Aug., 1896 (Edw. Palmer, no. 451) : San Luis 

 Potosi, alt. 1,850 to 2,460 m., 1878 (Parry & Palmer, do. 78 

 Mexico, barranca near Santa IV, July 6, 1865 Bourgeau, do. 



19 i ; Santa Fe*, Sept. 3, L899 ( C. G. Pringle, no. 7991). 



* * Bracts less conspicu lous: calyx campanulate, conspicuously 



bilabiate, subinflated. 



«- Leaves sessile orsubsessile or narrowed to short inconspicuous petic mes 



elongated, at leasi the lower verticels becoming remote: perennials. 

 ns may be looked for here I 



*+ Sinus leafy marly or quite to the inflorescence. 



= Witliout glandular hairs on stem and calyx. 



29. S. angustifolia, Cav. Stems hispid, bearded at the nodes, 2 to 

 7 <lm. high, very leafy: leaves mostly hispid on the margins and nerves 

 — Ic. iv. 9, t. ."JIT ; Lindley, Bot. Reg. sviii. t. 1554; Sweet, Brit Fl. 

 Gard. n.s. iii. t. 219; Benth. I.e. 301; Hemsl. I.e. 55-2: Gray, Syn. Fl. 

 N. A. ii. 869 ; Briq. I.e. S. re/>tans, Jacq. Ilort. Schoen. iii. 38, t. 319. 

 X virgata, Ort. Dec. i. 3. — Central and Southern Mexico. Za< \- 

 TECA3, near Plateado, Sept. 2. 1897 (J. N. Rose, no. 2715): JALISCO, 

 Valley of Mexico, Tizapan, June 2G, 1865-66 (Bourgeau, no. L25, in 

 part) : Michoacan, Tlalpujahua 1828 {Graham) \ plains near Patzcuaro, 

 A.ug. 7. 1892 (C. G. Pringle, no. U63). & linifolia, Mart. & Gal. 

 1. c. 70, and Benth. I.e. 302, from Michoacan is probably only a form 

 with rose-colored corolla. 



Var. GLABRA, day. 1. c. Stems and leaves glabrous. S kptophylla, 



Benth. Lab. 2 19, & in DC. 1. c. 299. S. azurea, Torr. Bot. Mex. Bonnd. 

 131. in part. — From Texas through central and BOUthem .Mexico, of 



broader range than the hispid type. San Li is Potosi, in Band near the 



city of San Luis Potosi, 1876 (Schaffner, no. 672): Aguas Cai ienti - 



(Hartweg, no. 163); Jalisco, edge of swamp, Guadalajara, July, U 



/;///•. Palmer, no. 226): Chiapas, without locality. 1864-70 (Gi 



breght, no. 751) ; valley of Jiquipilas, alt. 650-1,100 in., Aug. 16, 1895 



/;. W. Nelson, no. 2922). 



= = Glandular-hairy. 



30. S. heterotricha. Stems erect from a rather woody base, 2.5 to 

 L5 dm. high, puberulent, and. especially above, bearing slender jointed 

 glandular hairs: leaves linear-attenuate, stronglj 1-8-nerved, •"> to * cm*. 

 long, puberulent or glabrate or rarely with some shinier glandular hairs: 



raceme 2 cm. or less in length; verticels all remote, the lower 8 to I cm. 

 apart, 8-9-flowered: bracts lanceolate to ovate-lanceolate, glandular- 



