STANDLEY TBEES AND SHRUBS OF MEXICO. 813 



DOUBTFUL SPECIES. 



Ayenia cobdifolia DC. Prodr. 1 : 488. 1824. Described from Mexico. 



Ayenia mexicana Turcz. Bull. Soc. Nat. Moscoii 36^: 569. 1863. Cyhiostigma 

 sidaefoliuni Turcz. Bull. Soc. Nat. Moscou 1852' : 156. 1852 ; Ayenia sidaefolia 

 Henisl. Biol. Centr. Amer. Bot. 1: 135. 1879, not A. sidaefolia DC. 1824, 



Ayenia yucatanensis Millsp. Field Mus. Bot. 1: 379. 1898. Type from 

 Buenavista Xbac, Yucatan. 



13. BUETTNERIA L. Syst. Nat. ed. 10. 939. 1759. 



Scandent or procumbent shrubs, often armed with prickles ; flowers small, 

 pedicellate, mostly in lateral umbels or cymes ; calyx 5-lobate ; petals 5, cucul- 

 late, clawed, the limb bilobate, inflexed at apex, produced dorsally into a long 

 ligule; anthers solitary in the sinuses of the stamen tube; fruit a 5-celled cap- 

 sule, covered with long spines, the carpels easily separating, bivalvate, 1-seeded. 



Stems armed with recurved prickles 1. B. aculeata. 



Stems unarmed. 



Leaves entire 2. B. catalpifolia. 



Leaves dentate 3. B. salicifolia. 



1. Buettneria aculeata Jacq. Stirp. Amer. 76. 1763. 

 Chaetaea aculeata Jacq. Enum. PI. Carib. 17. 1760. 

 Bnettneria carthagenensis Jacq. Stirp. Amer. Pict. 41. 1780. 

 Buettneria lanceolata DC. Prodr. 1: 487. 1S24. 

 Buettneria tiliae folia Presl, Rel. Haenk. 2: 144. 1836. 

 Buettneria lateralis Presl, Rel. Haenk. 2: 144. 1836. 

 Bnettneria rubricaulis Presl, Rel. Haenk. 2: 145. 1836. 



Sinaloa to San Luis Potosi, YucatS-n, Tabasco, and Chiapas. Central America 

 and northern South America ; type from Cartagena, Colombia. 



Scandent or procumbent shrub, the stems obtusely angulate, green, very 

 prickly, glabrous or pubescent ; leaves on long or short petioles, the upper ones 

 lanceolate to broadly ovate, the lower ones broader, acute to long-acuminate, 

 obtuse to cordate at base, usually crenate or serrate toward the apex, thin, 

 green, glabrous or sparsely pubescent; flowers small, black-purple, in small 

 axillary cymes ; fruit body 7 to 10 mm. in diameter, covered with long stout 

 spines. "Arrendador " (Sinaloa); " varilla prieta " (MichoacSn, Guerrero); 

 " zarza " (Tabasco, El Salvador) ; " xtexak " (Yucatan, Maya) " uiia de gate" 

 (Costa Rica) ; "zarza hueca " (Venezuela). 



Reported by Sesse and Mocino ^ as By ttneria scabra. In Venezuela the root is 

 employed as a substitute for sarsaparilla in the treatment of cutaneous and 

 syphilitic diseases, and emmenagogue properties also are ascribed to it. 



2. Buettneria catalpifolia Jacq. PI. Hort. Schonbr. 1: pi. .'/6. 1797. 

 Michoaciin to Oaxaca and Veracruz. Central America and northern South 



America ; type from Caracas, Venezuela. 



Large vine, the branches terete, tomentulose when young; leaves long-petio- 

 late, ovate-cordate, 10 to 25 cm. long, cuspidate-acuminate, thin, green, glabrous 

 and lustrous above, pubescent or glabrous beneath ; inflorescence axillary or 

 terminal, lax, pedunculate, the flowers white; calyx 5 to 6.5 mm. long; fruit 

 body 2.5 to 3.5 cm. wide, usually depressed, covered with long slender prickles. 



" Bejuco eenizo " (Michoacdn, Guerrero). 



'PI. Nov. Hisp. 39. 1887. 



