I 



STANDEE Y TEEES AND SHRUBS OF MEXICO. 1277 



Leaves linear-oblong, entire 1. G. micromerioides. 



Leaves ovate or broadly ovate, serrate. 



Leaves 2 to 3 mm. long 2. G, lielleri. 



Leaves mostly 5 to 9 mm. long 3. G. mexicana. 



1. Gardoquia micromerioides Hemsl. Biol. Centr. Amer. Bot. 2: 550. 1882. 

 San Luis Potosi. 



Plant suffrutescent, 40 cm. high or less, glabrate; leaves subsessile, 6 to 

 18 mm. long; flowers solitary, 12 to 18 mm. long; calyx 6 to 8 mm. long. 



2. Gardoquia helleri Peyr. Linnaea 30: 34. 1859. 



Type from Tepetitlan, Orizaba, Veracruz, altitude 2,400 to 2,700 meters. 

 Small much-branched shrub ; leaves short-petiolate, acutish, 2 to 4-dentate, 

 glabrous ; flowers solitary ; calyx 5 to 6 mm. long, corolla 18 to 25 mm. long. 

 Probably only a form of O. mexicana. 



3. Gardoquia mexicana Benth. PI. Hartw. 50. 1840. 



Hidalgo to Guerrero, Oaxaca, and Veracruz ; type from Regla, Hidalgo. 

 Low shrub, the branchlets minutely puberulent ; leaves petiolate, obtuse or 

 acute, serrulate, glabrous ; calyx 6 mm. long ; corolla 22 to 34 mm. long. 



148. SOLANACEAE. Potato Family. 



Shrubs or trees or often herbs, erect or scandent, often armed with prickles, 

 the pubescence frequently of branched hairs ; leaves mostly alternate, simple 

 or compound ; flowers perfect, usually in cymes, regular or nearly so ; calyx in- 

 ferior, usually 5-parted, gamosepalous ; corolla gamopetalous, varying from 

 tubular to rotate, the limb usually 5-lobate ; stamens as many as the corolla 

 lobes and alternate with them, attached to the corolla tube; style simple, the 

 stigma discoid or bilamellate; fruit baccate or capsular, many-seeded. 



Several genera besides those listed are represented in Mexico by herbaceous 

 species. 



Ovary 1-celled 13. LITHOPHYTUM. 



Ovary with 2 or more cells. 



Fruit capsular 1. NICOTIANA. 



Fruit baccate. 



Embryo straight or nearly so. Leaves entire. 



Fruit many-seeded; corolla lobes imbricate 2. JXJANTJLLOA. 



Fruit few-seeded; corolla lobes induplicate-valvate 3. CESTRITM. 



Embryo curved. 

 Ovary 4-celled. 



Corolla lobes imbricate 4. SWARTZIA. 



Corolla lobes induplicate-valvate 5. DATURA. 



Ovary 2-celled. 



Corolla lobes imbricate 6. LYCIUM. 



Corolla lobes valvate or induplicate-valvate. 



Corolla funnelform 7. ACNISTUS. 



Corolla salverform or campanulate. 



Anthers opening by terminal pores 8. SOLANUM. 



Anthers opening by longitudinal slits. 

 Calyx accrescent after anthesis. 



Calyx longer than the fruit and contracted above it. 



9. ATHENAEA. 

 Calyx equaling or shorter than the fruit, not contracted. 



10. WITHANIA. 



