494 PROCEEDINGS OP THE AMERICAN ACADEMY. 



lance-subulate, 5 to 7 mm. long : pedicels 2 to 4 mm. long : calyx in 

 anthesis 5 mtn., in fruit 9 mm. long; the lobes equalling the tube, 

 narrow-ovate, with long subulate aristiform tips, the pubescence less 

 spreading than on the tube : corolla 7 to 8 mm. long ; the sparingly 

 pilose lips deep blue. — S. privoides, Gray in Wats. Proc. Am. Acad. 

 xxi. 435; Rose, Contrib. U. S. Nat, Herb. i. 110; not Benth. — North- 

 western Mexico. Chihuahua, Hacienda San Jose, 1885 {Edw. Palmer, 

 no. 64) : Sonora, by shaded water-courses and in canons. Alamos, Sept., 

 1890 {Edw. Palmer, no. 680, 681). 



2. Calyx pubescent with gland-tipped hairs ; upper lip generally tridentate : 

 racemes paniculate, 5 cm. or less in length. 



10. S. lateriflora. Bushy-branched annual, 2.5 to 3 dm. high: stems 

 sparingly retrorse-pilose: leaves ovate or rhombic-ovate, thin, blunt or 

 acutish at tip, cuneate to slender petioles 5 cm. or less long, coarsely 

 crenate-dentate, minutely setulose on both faces or glabrate : flowers 

 solitary or in 2's, all remote, the lowest 0.7 to 1 cm. apart: bracts ovate, 

 acuminate, 1 to 2 mm. long : pedicels 2 to 4 mm. long : calyx in 

 anthesis 2 to 3 mm., in fruit 5 to 6 mm. long ; the tube twice exceeding 

 the broad blunt subulate-tipped lobes. — Sonora, about abandoned gar- 

 dens, Guaymas, Oct., 1887 {Edw. Palmer, no. 320). Habitally re- 

 sembling Scutellaria lateriflora. A fragmentary specimen collected by 

 Xantus at Cape St. Lucas, Lower California, may belong here. 



H- -t- Calyx not glandular. 



*+ Leaves thin, membranaceous, the primary ones 4 to 9 cm. long : verticels 6- 



many-flowered. 



11. S. TILIAEFOLIA, Vahl. Leaves broad- or rhombic-ovate, cordate 

 truncate or rounded-cuneate at base, sparingly pubescent on both faces, 

 dark green above. — Symb. iii. 7 ; Jacq. Hort. Schoenb. iii. 2. t. 254; 

 Benth. I.e. 299; Hemsl. 1. c. 566. S. flmhriata, HBK. I.e. 299, t. 

 149. — Common in tropical America, extending northward through 

 Mexico. Chihuahua, Valley of Chihuahua, Sept. 17, 1885 (0. G. 

 Pringle, no. 556; damp places, Caiion de Pilares, Sept. 22, 1891 (C. V. 

 Hartman, no. 749) : Coahuila, Saltillo, 1848-49 {J. Gregg, no. 542) ; 

 Soldad, Sept., 1880 and in shaded places, Saltillo, Sept., 1880, 1898 

 (Ediv. Palmer, nos. 1062, 335) : Durango, abundant in shade near 

 Durango, Sept., 1896 (Edw. Palmer, no. 572): San Luis Potosi, in 

 deep shade near the city, 1876 (Sehajfner, no. 674), alt. 1,850 to 2,460 

 m., 1878 (Parry & Palmer, nos. 743, 746^) : Aguas Calientes (Hart- 

 weg, no. 159) : Mexico, Valley of Mexico, May 5, 1865 (Bourgeau, no. 



