292 PROCEEDINGS OP THE AMERICAN ACADEMY. 



scrobiculate. — Proc. Am. Acacl. xvii. 203. — In the mountains, 24 

 miles N. E. of Monclova, Coahuila, Palmer, nos. 404, 406 ; Santa 

 Eulalia Mountains, Chihuahua, Priugle, nos. 151, 354; adjacent Texas, 

 ,it Presidio, Bigelow, in Mexican Boundary Survey ; foothills of Chisos 

 Mountains, Havard, No. 31 ; and in the Organ Mountains, New Mexico, 

 Vasey, 1881. 



+- -I- Leaves 3 to 18 mm. in length : corolla 10 to 14 mm. long. 



H. fruticosa, Rose. Low much branched shrub, glabrous through- 

 out : stem and branches covered with a rough yellowish brown or grayish 

 bark : leaves linear or somewhat thickened and subterete, submucronate, 

 more or less fascicled in the axils ; stipules short, glandular-setiferous : 

 inflorescence in terminal rather few-flowered dichotomous cymes ; flowers 

 subsessile or short pedicellate : calyx deeply 5-lobed with a single stipi- 

 tate gland in each sinus; lobes linear-lanceolate, about 3 mm. long, folia- 

 ceous : corolla about 3 times longer than the calyx ; tube narrowly 

 funnel-shaped, glabrous : capsule short, oblong, subtruncate or slightly 

 emarginate ; seeds oblong, peltate, concavo-convex, minutely scrobiculate. 

 — Contrib. U. S. Nat. Herb. i. 132, 239. Hedyotis {Ericotis) mucronata, 

 Benth. Bot. Sulph. 19. — Magdalena Island, Lower California, Brandegee, 

 17 January, 1889; Carmen Island, Palmer, no. 885. 



§ 3. Macrohoustonia. Erect shrubby plants with ovate leaves and 

 rather large flowers. — Gray, Proc. Am. Acad. iv. 314. A section 

 scarcely to be retained. 



H. bouvardioides, Benth. & Hook. f. Shrub 3 to 4 feet high : 

 stems terete, granular- jDuberulent : leaves opposite or ternate, short-jDetio- 

 late, ovate or elliptic-lanceolate, acute or short-acuminate, entire, finely 

 puberulent upon either surface, especially upon the midrib and veins : 

 inflorescence in terminal compound minutely pubescent cymes : calyx 

 deeply 4-parted ; divisions linear, 3 mm. long : corolla funnelform, about 

 12 mm. long, glabrous, rather deeply 4-lobed ; tube with a few scattered 

 hairs on the inside toward the base ; lobes oblong, obtuse : anthers long- 

 exserted : style included (probably dimorphous) ; ovules rather numer- 

 ous : seeds not seen. — Gen. ii. 60 ; Hemsl. Biol. Centr.-Am. Bot. ii. 30. 

 Hedyotis (§ Anotis) bouvardioides, Seem. Bot. Herald, 296, t. 64. — N. W. 

 Mexico, Seemann. A plant having much more in common with Bouvardia 

 than with Hoiutonia, but without fruit or mature seeds it seems unwise to 

 make the transfer. More complete specimens, however, may justify its 

 removal to the former genus. 



H. (Macrohoustonia) longiflora, Gray, Proc. Am. Acad. iv. 314, 

 Hemsl. Biol. Centr.-Am. Bot. ii. 30, is Bouvardia longijlora, HBK., 



