54J: PROCEEDINGS OP THE AMERICAN ACADEMY. 



*+ +-<■ Leaves pubescent beneath. 



= Stem glandular-setulose : leaves setulose-hispid above, coarsely and irregularly 

 serrate : calyx setulose-hispid : corolla barely 2 cm. long. 



172. S. BiSEKRATA, Mart. & Gal. 1. c. 66 ; Benth. 1. c. 335 ; Hemsl. 

 I.e. 553; Briq. I.e. — Chiapas {Ghieshreght, no. 763). Described 

 from Mt. Orizaba. 



= = Stem villous above, glabrate below : leaves minutely pubescent above, finely 

 and regularly crenate-serrate : calyx pilose: corolla 2.5 to 3 cm. long. 



173. S. CYANEA, Benth. Lab. 296, &, in DC. I.e. 336; Hemsl. I.e. 

 5)5. S. cyanijiora, Dietr. in Otto & Dietr. I. c. i. 301. ^S". cyanifera, 

 Otto in Benth. I.e. as syn. — Central Mexico. Mexico, Desierto 

 Viejo, Sept. 7, 1865 (^13ourgeau, no. 837). 



E. Tubiflorae, Benth. Shrubs (rarely herbs) with tubulose-campanu- 

 late calyx : corolla scarlat crimson flesh-colored or purple, rarely blue- 

 violet ; the tube straight or curved, cylindric or ampliate (not ventricose) 

 above. 



« Leaves cuneate or narrowed at base. (Forms of S. cinnabarina, elegans, and 



nervat.a may be looked for here.) 



-I- Leaves pubescent beneath, corolla rose-purple. 



++ Leaves softly canescent-tomentose or cinereous-pilose beneath. 



= Calyx minutely pilose, in anthesis 9 to 10 mm. long; the tube once and a half 

 exceeding the ovate-lanceolate acuminate lobes : corolla 2.5 to 4 cm. long. 



174. S. CURVIFLORA, Benth. Lab. 284, & in DC. 1. c. 340 ; Hemsl. 1. c. 

 555 ; Briq. 1. c. — Hidalgo, Zimapan {Coulter, nos. 1088, 1089, 1090) : 

 MiCHOACAN, Tlalpujahua {Graham). 



= = Calyx hispidulous: corolla 1.5 to 1.8 cm. long. 



175. S. chiapensis. Fruticose (?), the tall simple branches puber- 

 ulent belovF, pilose-hispid above : leaves thick, ovate or oblong-ovate, 

 appressed-serrate, acuminate at tip, subcuneate at base, 5 to 12 cm, long, 

 green and minutely pilose above, canescent and subvelutinous beneath, on 

 puberulent petioles 3.5 cm. or less in length: raceme 3 to 4 dm. or less 

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

 4 cm. apart: bracts oblong-ovate, acuminate, short-pubescent, 1.5 cm. or 

 less in length, caducous : pedicels becoming 5 mm. long : calyx in 

 anthesis 7 to 8 mm. long; the tube nearly twice exceeding the ovate- 

 lanceolote acuminate lobes: corolla-tube about twice exceeding the calyx ; 

 the densely villous galea about equalling the lip : style bearded. — 

 Chiapas, without locality {Ghieshreght^ nos. 57, 761); near San Cris- 

 tobal, alt. 2,150 to 2,460 m., Sept. 18, 1895 {E. W. Nelson, no. 3201). 



