1923J 



GREENMAN — SOUTH AMERICAN SENECIOS 95 



cronato-acutis sinuato-dentatis basi in petiolo contractis, supe- 

 rioribus sessilibus plus minusve amplexicaulibus lanceolatis 2-12 

 cm. longis usque ad 1.5 cm. latis grosse dentatis vel subrun- 

 cinatis glabris vel subglabris, eis ad inflorescentias plerumque 

 multo reductis; inflorescentiis terminalibus subcorymboso-cymo- 

 sis paucicapitatis vel aliquando unicapitatis ; capitulis magnis 

 15-18 mm. altis radiatis; involucris campanulatis calyculatis; 

 involucri bracteis 21 lanceolatis 10-13 mm. longis 1.5-3 mm. latis 

 acutis penicillatis glabris vel parcissime crispo-puberulentis pur- 

 purascentibus; floribus ligulatis circiter .21, tubulo 5 mm. longo, 

 ligula anguste oblonga circiter 12 mm. longa 2-3 mm. lata viola- 

 ceo-purpurea; floribus disci numerosis; pappi setis albidis; 

 achaeniis parcissime hirtellis. 



Perennial herb; stem erect or ascending, simple or branched 

 above, .5-1 m. high, glabrous or sparingly crisp-puberulent, stri- 

 ate, more or less purple;. lower leaves oblanceolate, 5-10 cm. long, 

 1-1.5 cm. broad, obtuse or submucronate-acute, sinuate-dentate, 

 contracted at the base into a narrowly winged petiole; upper 

 leaves sessile, more. or less amplexicaul, lanceolate, 2-12 cm. long, 

 1.5 cm. or less broad, coarsely dentate to subruncinate, glabrous 

 or nearly so, those towards the inflorescence usually much re- 

 duced; .inflorescence a terminal subcorymbose cyme, few-headed 

 or occasionally one-headed; heads large, 15-18 mm. high, radiate; 

 involucre campanulate, calyculate; bracts of the involucre 21, 

 lanceolate, 10-13 mm. long, 1.5-3 mm. broad, acute, penicillate, 

 glabrous or sparingly crisp-puberulent, purple; ligulate flowers 

 about 21, tube 5 mm. long, ligule narrowly oblong, about 12 mm. 

 long, 2-3 mm. broad, violet-purple ; flowers of the disk numerous, 

 more than 100; setae of the pappus white; achenes sparingly 

 hirtellous. 



Colombia: wet mossy paramo, Paramo de Cruz Verde, near 

 Bogota, Department of Cundinamarca, alt. 3300-3500 m., Sep- 

 tember 20, 1917, Pennell 2051 (N. Y. Bot. Gard. Herb., U. S. Nat. 

 Herb., and Mo. Bot. Gard. Herb.); Canoas, July, 1917, Bro. 



Ariste-Joseph A 87 (U. S. Nat. Herb.). 



The writer feels confident that this is the form which Weddell 

 briefly characterized as Senecio formosus var. subruncinatus; but 

 the slender lower part of the stem, the oblanceolate to subrun- 

 cinate leaves, and the glabrous or essentially glabrous character 

 of the entire plant seems to warrant its specific rank. 



Senecio sylvicolus Greenm., sp. nov. Plate 8. 



Frutex scandens; ramis ramulisque brunneis striatis glabris; 



