STANDLEY TREES AND SHRUBS OF MEXICO. 1161 



Leaves oblong, acute or acutish at base ; calyx lobes oblong to oval, obtuse. 



1. R. paludosa. 

 Leaves elliptic, i-ounded or subcordate at base ; calyx lobes ovate, acuminate. 



2. R. cordata. 



1. Rhabdadenia paludosa (Vahl) Miers, Apocyn. S. Amer. 119. 1878. 

 EcJiites paludosa Vahl, Eclog. Amer. 2: 19. pi. 5. 1798. 



Yucatan. Southern Florida, West Indies, and South America. 



Stout woody vine, glabrous throughout ; leaves 4.5 to 10 cm. long, obtuse 

 or rounded at apex, leathery; calyx 6 to 9 mm. long; corolla 6 to 7 cm. long, 

 white or pale yellow. " Clavelitos de sabana," " clavelitos de manglar " 

 (Cuba). 



The acrid juice is said to produce blisters upon the skin, and to have purga- 

 tive and even poisonous properties. 



2. Rhabdadenia cordata (Mill.) Miers, Apocyn. S. Amer. 122. 1878. 

 Apocynum cordatum Mill. Gard. Diet. ed. 8. Apocynum no. 10. 1768. 

 Tamaulipas and Veracruz; type from Veracruz. 



Stout vine ; leaves 5 to 11 cm. long, acute or abruptly short-acuminate, 

 leathery, sparsely pubescent or glabrate ; racemes few-flowered ; corolla yellow, 

 6 to 7 cm. long ; follicles divaricate, about 11 cm. long and 6 mm. thick. 



16. TJRECHITES Muell. Arg. Bot. Zeit. 18: 22. 1860. 



Scandent shrubs ; leaves opposite ; flowers large, racemose ; calyx 5-parted, 

 glandular within, the lobes narrow ; corolla funnelform. the tube slender, 

 terete, the throat campanulate, the lobes short; anthers sagittate, bearing at 

 the apex a long filiform twisted appendage ; follicles terete, erect or divergent ; 

 seeds with an apical tuft of hairs. 



Leaves densely velutinous-pilosulous beneath ; calyx 2 to 3 mm. long. 



1. U. karwinskii. 

 Leaves glabrate or sparsely pubescent beneath ; calyx 5 to 6 mm. long. 



2. TJ. andrieuxii. 



1. Urechites karwinskii Muell. Arg. Linnaea 30: 440. 1860. 

 Mandevilla potosina T. S. Brandeg. Univ. Calif. Publ. Bot. 4: 276. 1912. 

 Guerrero to San Luis PotosI, Veracruz, and Oaxaca ; type from " Huefulta " 



(Huejutla, Hidalgo?). Guatemala. 



Leaves petiolate, ovate-oblong to oval-elliptic, 5 to 10 cm. long, acuminate or 

 abruptly short-acuminate, rounded or subcordate at base, sometimes panduri- 

 form; corolla white, 3.5 to 5.5 cm. long, the tube very slender; follicles about 

 12 cm. long. " Loroco " (Guatemala, El Salvador) ; " quilite " (El Salvador). 



The flowers, buds, and young tender shoots are used as a vegetable in Guate- 

 mala and El Salvador, being cooked with rice and other substances. 



2. Urechites andrieuxii Muell. Arg. Linnaea 30: 442. 1860. 



Type collected near Tehuantepec, Oaxaca; reported also from Hidalgo. 



Leaves petiolate, broadly elliptic or elliptic-ovate, 5 to 6 cm. long, abruptly 

 short-acuminate, rounded at base, glabrous above; corolla 5 cm. long; follicles 

 17 cm. long and 6 mm. thick. 



17. MANDEVILLA Lindl. Bot. Reg. pi. 7. 1840. 



Scandent shrubs; leaves opposite; flowers small or large, racemose, usually 

 white ; calyx 5-parted, glandular within ; corolla funnelform, the tube cylindric, 

 the throat campanulate; anthers obtuse or short-acuminate, appendaged at 

 base ; follicles erect or nearly so ; seeds with an apical tuft of hairs. 



