STANDLEY TREES AND SHRUBS OF MEXICO. 1179 



Stems bifariously puberulent or glabrous ; leaves deltoid-cordate, 3 to S 

 cm. long, acute or acuminate, glabrous ; peduncles equaling or shorter than 

 the leaves, 5 to 9-flov^^ered ; corolla greenish white ; follicles 5 to 10 cm. long. 



3. Eouliniella lignosa Vail, Bull. Torrey Club 29: 666. f. 5. 1902. 

 .Jalisco to Morelos and Oaxaca; type from Rio Blanco, Jalisco. 



Stems glabrous or nearly so, often fruticose; leaves ovate-cordate or deltoid- 

 cordate, 3.5 to 8.5 cm. long, acute or acuminate, truncate to deeply cordate at 

 base, glabrous or nearly so ; peduncles equaling or shorter than the leaves, 

 few-flowered ; corolla 5 to 6 mm. long ; follicles about 9 cm. long. 



4. Bouliniella foetida ((Jav.) Vail, Bull, Torrey Club 29: 667. 1902. 

 Asclepias foetida Cav. Icon. PI. 2: 45. pi. 15S. 1793. 



RouUnia jacquini Decaisne in DC. Prodr. 8: 517. 1844. 



Rouliniella jaliscana Vail, Bull. Torrey Club 29: 668. f. 7. 1902. 



Jalisco to Oaxaca and Yucatan. 



Stems bifariously puberulent or glabrous ; leaves ovate-cordate, 3 to 12 cm. 

 long, acuminate or cuspidate-acuminate, deeply cordate at base, glabrous ; 

 peduncles equaling or shorter than the leaves, with 9 to 12 or more flowers ; 

 corolla 4 to 7 mm. long, greenish white. 



14. NEPHRADENIA Decaisne in DC. Prodr. 8: 604. 1844. 



1. Nephradenia neriifolia (Decaisne) Benth. & Hook.; Hemsl. Biol. Centr. 

 Amer. Bot. 2: 336. 1882. 



Blepharodon tieriifoUum Decaisne in DC. Prodr. 8: 004. 1844. 



Oaxaca ; type from Totontepec. Guatemala. 



Glabrous erect shrub ; leaves short-petiolate, linear-lanceolate, 8 to 14 cm. 

 long, 1 to 3 cm. wide, long-acuminate, acute at base; umbels few-flowered, 

 axillary, short-pedunculate ; calyx lobes ovate or suborbicular, ciliate ; corolla 

 campanulate, brownish, about 1 cm. broad, the lobes obtuse; corona scales 

 laterally compressed. 



15. MARSDENIA R. Br. Mem. Weru. Soc. 1: 28. 1809. 



Reference: Rothe, Uber die Gattung Marsdenia R. Br. und die Stamm 

 pflanze der Condurangorinde, Bot. Jahrb. Engler 52: 354^34. 1915. 



Plants scandent, usually fruticose or suffrutescent ; flowers small or of med- 

 ium size, in umbelliform cymes ; calyx 5-parted, glandular within, the segments 

 acute or obtuse ; corolla campanulate, the throat usually villous, the lobes con- 

 torted, iippendages sometimes present in the sinuses of the lobes; corona scalos 



5. adnate to the stamen tube; stigma depressed or rostrate; follicles thick, 

 usually smooth. 



Marsdenia cundurango Reichenb. f., of Peru and Ecuador, furnishes " cun- 

 durango " or " condorango " bark, which has been employed in the treatment 

 of syphilitic affections. In Ecuador it is considered a remedy for snake bites, 

 there being a popular belief that the condor eats the leaves to cure itself of 

 wounds and snake bites, hence the name " condorango " or " condor-vine." 



Leaves glabrous beneath except sometimes along the costa, rarely with a few 



hairs over the surface when very young. 



Leaves oblong, 5 mm. wide or less 1. M. parvifolia. 



Leaves mostly ovate to oval, 1.5 to 6 cm. wide or larger. 



Lobes of the corolla nearly twice as long as the tube 2. M. pringlei. 



