STANDLEY TREES AND SHEUBS OF MEXICO 1635 



on both surfaces; heads radiate; ray flowers 5 or 6; rays yeUow; disk flowers 

 15 to 18; achenes glabrous. "Palo loco" (Valley of Mexico); "palo bobo" 

 (Bdrcena); "tesapacle," "tezacpatli," "tezcapatli" (Nahuatl). 



A decoction of the leaves is used as a domestic remedy for wounds and rheu- 

 matism. 



This is one of the most striking species of the entire genus. The stems are 

 fleshy, "the wood very soft and pithy" (ex Dr. J. Gregg), and the cortical 

 portion is permeated with resin tubes. The plant is locally known as " candelero." 



59. Senecio velatus Greenm. Ann. Mo. Bot. Gard. 1: 280. pi. 13. 1914. 

 Southwestern Mexico; type from bluffs of barranca, near Guadalajara, Jahsco. 

 Shrub or small tree, similar in habit to the preceding species; stem and branches 



at the apex rusty-pubescent; leaves petiolate, palmately 7-nerved, ovate-rotund 

 in general outline, about 10 cm. long and broad, 7 to 9-angulate-)obed, persist- 

 ently white-arachnoid-tomentulose beneath; heads about 1.5 cm. high, radiate; 

 involucral bracts 8, glabrous; ray flowers 3 to 5; rays yellow; disk flowers 6 or 7; 

 achenes glabrous. 



60. Senecio parasiticus Hemsl. Biol. Centr. Amer. Bot. 2: 244. 1881. 

 Cacalia parasitica Schultz Bip. Bot. Zeit. 15: 759. 1857. 



South Mexico; type collected near Orizaba. 



A scandent or climbing woody plant; stem glabrous; leaves short-petiolate, 

 somewhat fleshy, lanceolate to ovate-lanceolate, including the petiole 4 to 8 

 cm. long, 1 to 3 cm. broad, entire, abruptly narrowed at the base into a petiole 

 1 cm. or less in length; inflorescence a terminal, more or less leafy, paniculate 

 cyme; heads 10 to 12 mm. high, discoid; involucral bracts 8, glabrous; disk 

 flowers 15 to 20; achenes glabrous. 



61. Senecio kermesinus Hemsl. Biol. Centr. Amer. Bot. 2: 242. 1881. 

 Gynoxis haenkei DC. Prodr. 6: 326. 1837. 



Senecio convolvuloides Greenm. Monogr. Senecio 1: 26. 1901; Bot. Jahrb. 

 Engler 32: 22. 1902. 



South Mexico; type collected by Haenke. 



Stem scandent, ligneous; branches striate; leaves petiolate, ovate to ovate- 

 lanceolate, 3 to 10 cm. long, 1 to 6 cm. broad, acuminate, acute, subentire to 

 coarsely dentate, rounded to shallowly cordate at the base, glabrous or slightly 

 puberulent in the young stages; inflorescence a terminal, somewhat leafy, hirtel- 

 lous-puberulent, paniculate cyme; heads in anthesis 1 to 1.5 cm. high, radiate; 

 rays deep orange-colored; involucre calyculate with setaceous, densely hirtellous, 

 somewhat squarrose bracteoles; bracts of the involucre commonly 13, sparingly 

 hirtellous to glabrous, 5 to 7 mm. long; disk flowers about 40; achenes glabrous. 



This species is known in Chiapas under the name of "flor de nino." 



62. Senecio confusus Britten, Journ. Bot. Brit. & For. 36: 260. 1898. 

 Senecio cordifolius neaei DC. Prodr. 6: 326. 1837. 



Gynoxis berlandieri DC. Prodr. 6: 326. 1837. 



Gynoxis berlandieri a cordifolia DC. Prodr. 6: 326. 1837. 



Gynoxis berlandieri /3 cuneata DC. Prodr. 6: 326. 1837. 



Senecio berlandieri Hemsl. Biol. Centr. Amer. Bot. 2: 236. 1881. 



Tamaulipas and San Luis Potosi to Chiapas; type collected near Tampico. 



Stem scandent, ligneous, 1 to 6 meters long, climbing over shrubs and trees; 

 branches striate, glabrous or essentially so; leaves petiolate, ovate to ovate- 

 lanceolate, 3 to 10 cm. long, 1 to 4 cm. broad, acuminate, acute, entire to coarsely 

 dentate, cuneate to subcordate, glabrous or nearly so on both surfaces; petioles 

 1 to 2 cm. long; inflorescence terminating the stem and branches in a somewhat 

 leafy paniculate cyme; heads in anthesis 1.5 to 2 cm. high, radiate; involucre 

 conspicuously calyculate with long linear appressed bracteoles; bracts of the 



