540 PROCEEDINGS OF THE AMERICAN ACADEMY. 
acuminate, appressed-serrate quite to the base, dull and minutely 
puberulous above, pale and glabrous beneath, on slender puberulent 
petioles 4.5 cm. or less in length: raceme simple, 1.3 dm. long; the 
rhachis and pedicels glandular and sparingly pilose; verticels 6-10- 
flowered, all remote, the lowest 2.5 cm. apart: bracts caducous (not 
seen) : 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 tube: corolla 3 to 4 cm. long, the 
moderately ventricose glabrous tube twice as long as the calyx; the 
pilose galea equalling the lip: style bearded. — S. involucrata, Hemsl. 
1. c. 558, in part, not Cav. —San Luis Porost, alt. 1,850 to 2,460 m., 
1878 (Parry & Palmer, no. 755). 
* * * Stoloniferous herb; the subdeltoid or cordiform leaves confined chiefly to 
the lower half: peduncle elongated, simple; verticels 2-6-flowered, remote: 
corolla 5 em. long. 
158. S. sroronrrera, Benth. Pl. Hartw. 70, & in DC. 1. ¢. 333; 
Hemsl. 565; Briq. 1. c.— Oaxaca, Sierra de San Felipe, alt. 2,300 to 
3,080 m., Sie 23, 1894 (C0. G. Pringle, no. 4705, #. W. Nelson, no- 
Be); Telixtlahuaca, alt. 2,300 m., July 27, 1895 (L. 0. Smith, 
7). 
D. Cyaneae, Benth. Calyx tubulose-campanulate: corolla blue violet 
or rose, straight ; the tube ventricose. 
* Corolla rose or rose-purple. 
+ Leaves hispid or pilose beneath. 
++ Leaves rounded-cuneate at base: corolla 1.5 to 1.8 em. long. 
159. S. purpurascens, Mart. & Gal. 1. c. 69; Benth. in DC. 1. & 
335; Hemsl. 1. ¢. 564; Brig. 1. c. 283.— Described from Mt. Orizaba, 
Vera Cruz. Not seen, 
.+ ++ Leaves cordate at base. 
= Verticels 6-flowered: calyx 1.8 cm. long: corolla 3 em. long. 
160. S. ropocnroa, Briq. Ann. Conserv. Jard. Bot. Geneve, il. 161. 
— Described from Costa Rica. Not seen. 
= = Verticels 10-30-flowered: mature calyx 8 mm. long: corolla 1.5 cm. 
long. 
161, S.irazuensis. Tall and freely branching, the stem purple, 
slightly crisp-pilose in lines, or glabrate ; the branchlets glandular-pilose‘ 
internodes long (1 dm.): leaves cordate-ovate, acuminate, serrate, 
