540 PROCEEDINGS OP THE AMERICAN ACADEMY. 



acuminate, appressed-serrate < juite to tlie base, <lull and minutely 

 puberulous . pale and glabrous beneath, on Blender puberul 



petioles L5 cm. or less in length: raceme simple, L.S dm. long; the 

 rhachis and pedicels glandular and sparingly pilose; verticels G-l<»- 

 flowered, all remote, the lowest 2.5 cm. apart: bracts caducous (not 

 a) : calyx tubular-campanulate, slightly pilose on the nerves; the 

 lobes setaceous-acuminate, the upper lip twice exceeding the 2-lobed 

 lower one. and twice exceeded by the tul>e: corolla •'! to I cm. long, the 

 moderately ventricose glabrous tube twice as long as the calyx ; the 

 pilose galea equalling the lip: style bearded. — S. involucraia, Hemsl. 

 1. c. 558, in part, not Cav. — Sab Luis Potosi, alt. 1,850 to 2,<1G0 m., 

 1878 I Parry &. Palmer, no. 755 I. 



* * * Stoloniferous herb ; the subdeltoid or cordiform leaves confined chiefly to 

 the lower half: peduncle elongated, simple; verticels 2-6-flowered, remote: 

 corolla 5 cm. long. 



L58. 8. btolonipeea, Benth. PI. Hartw. 70, & in DC. 1. c. 333; 

 Ileinsl. 5G5; Briq. 1. c. — Oaxaca, Sierra de San Felipe, alt. 2,300 to 



3,080 m., June 23, 1894 (C. G. Pringhs, no. 1705,7;. W. Nelson, no. 



L183); Telixtlahuaca, alt. 2,300 m., July l'7, 1895 (Z. O. Smith. 

 no. 177). 



D. Cyaneae, Benth. Calyx tubulose-cainpanulate : corolla blue \ 

 or rose, straight ; the tube ventricose. 



* Corolla rose or rose-purple. 



t- Leaves hispid or pilose beneath. 



*+ Leaves rounded-cuneate at base : corolla 1.5 to 1.8 cm. long. 



159. S. PURPUKASCENS, Mart. & Gal. 1. c. G9 ; Benth. in DC. 1. c. 

 335; Ilemsl. 1. c. 564 ; Briq. 1. c. 283. — Described from Mt. Orizaba, 

 Vera Cbuz. Not seen. 



*+ -«■ Leaves cordate at base. 

 = Verticels C-flo\vered : calyx 1.3 cm. long : corolla 3 cm. lot 



100. S. IOUOCHBOA, Briq. Ann. Couserv. Jard. Bot. Geneve, ii. 1G1. 

 — Described from COSTA RlCA. Not seen. 



= = Verticels 10-30-flowered : mature calyx 8 mm. long: corolla 1.5 cm. 



long. 



161. S. irazuensis. Tall and freely brandling, the stem purple. 



jhtly crisp-pilose in lines, or glabrate : the branchlets glandular-pilose : 



Lnternodes long (1 dm.): leaves cordate-ovate, acuminate, serrate, the 



