1923] 



GREENMAN — SOUTH AMERICAN SENECIOS 89 



Colombia: in wet places, foot of Cordillera Oriental, near 

 Neiva, August 1, 1917, Rusby & Pennell 572 (N. Y. Bot. Gard. 

 Herb., fragment and photograph in Mo. Bot. Gard. Herb.), type. 



Specimens apparently representing this species, but with 

 somewhat smaller heads, and intermediate between it and the 

 following variety, were collected along the Camino de Gacheta, 

 Colombia, January 5, 1920, Bro. Ariste-Joseph 467 A (U. S. Nat. 

 Herb. ) . 



Var. gachetensis Greenm., var. nov. 



Stem arachnoid-tomentulose intermixed with multicellular 

 somewhat villous hairs; leaves about 10 cm. long, one-half as 

 broad, persistently subarachnoid-tomentulose beneath; heads 

 about 20-flowered. 



Colombia: Camino de Gacheta, January, 1920, Bro. Ariste- 

 Joseph A 535 (U. S. Nat. Herb., No. 1059490). 



This species is related apparently to 8. Urbani Hieron. but 

 differs in having larger leaves, longer petioles, shorter involucral 

 bracts, and a distinctly white pappus. 



Senecio pericaulis Greenm., sp. nov. 



Perennis; caulibus verisimiliter scandentibus lignescentibus 

 teretibus striatis brunneis hirtellis plus minusve glabratis; foliis 

 alternis sessilibus amplexicaulibusque anguste ovatis vel oblon- 

 go-ovatis 4-8 cm. longis 1.5-3 cm. latis mucronato-acutis calloso- 

 denticulatis vel leviter sinuato-dentatis utrinque aliquantulum 

 crispo-hirtellis plus minusve glabratis, marginibus saepe revolu- 

 tis; innorescentiis terminalibus laxe paniculato-cymosis subgla- 

 bris vel sparse glanduloso-hirtellis ; pedunculis 1.5-4.5 cm. longis; 

 capitulis 12-14 mm. altis radiatis; involucris campanulatis, caly- 

 culatis; bracteis involucri 13 lineari-lanceolatis vel lanceolato- 

 oblongis circiter 1 cm. longis 1-3 mm. latis acutis vel obtusis 

 glabris vel sparsissime glanduloso-hirtellis; floribus liguliferis 

 10-13. tubo 5 mm. longo, lisula oblonea circiter 12 mm. longa 



mm 



floribus disci 



8 mm. longis sursum sensim ampliatis; pappi setis albidis; 

 achaeniis glabris. 



Perennial; stems probably scandent, ligneous, terete, striate, 

 brownish, crisp-hirtellous, more or less glabrate; leaves alternate, 

 sessile and amplexicaul, narrowly ovate or oblong-ovate, 4-8 

 cm. long, 1.5-3 cm. broad, mucronate-acute, callous-denticulate 

 or shallowly sinuate-dentate, somewhat crisp-hirtellous on both 

 surfaces, more or less glabrate, especially above, margins com- 

 monly revolute; inflorescence a terminal subglabrous or sparing- 



