[Vol. 10 



88 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



Colombia: in swale, "Rosalito," near Paramo de Ruiz, Depart- 

 ment of Tolima, alt. 2800-3 100 m., December 15-17, 1017, Pen- 

 nell 2971 (N. Y. Bot. Gard. Herb., U. S. Nat. Herb., and Mo. 

 Bot. Gard. Herb.). 



Senecio pellucidinervis Schz. Bip. ex Baker in Mart. Fl. Bras. 



6 8 :319. 1884. 



Brazil: vicinity of Itatiaya, July 26-30, 1915, Rose & Russell 

 20462, 20571 (U. S. Nat. Herb., fragment and photograph in Mo. 

 Bot. Gard. Herb.). 



Senecio Pennellii Greenm., sp. nov. Plate 0. 



Frutex scandens; caulibus teretibus striatis juventate arach- 

 noideis mox glabratis, brunneis; foliis alternis petiolatis ovatis 

 vel oblongo-ovatis 10-18 cm. longis 4-8 cm. latis acutis calloso- 

 denticulatis basi leviter cordatis vel rotundatis utrinque glabris 

 vel juventate subtus parcissime arachnoideis mox glabratis, ner- 

 vis utrinque prominenter reticulatis; petiolis 1.5-3 cm. longis; 

 inflorescentiis terminalibus paniculatis pleuricapitatis; capitulis 

 12-15 mm. altis heterogamis; involucris campanulatis calycu- 

 latis; involucri bracteis 8 anguste oblongis vel oblongo-ovatis 5-6 

 mm. longis 1.5-3.5 mm. latis ad apicem obtusis vel subrotun- 

 datis et pubescentibus cetero glabris; floribus liguliferis 8, tubo 

 gracile 3-3.5 mm. longo, limbo plerumque radiato vel nonnum- 

 quam irregulariter dentato flavo, floribus disci 1*5-30, corollis 



tubulo-campanulatis, flavibus; pappi setis copiosis albidis; 



achaeniis glabris. 



Scandent shrub; stems terete, striate, arachnoid in the young 

 stages, soon glabrate, brownish ; leaves alternate, petiolate, ovate 

 to oblong-ovate, 10-18 cm. long, 4-8 cm. broad, acute, callous- 

 denticulate, shallowly cordate to rotund at the base, glabrous on 

 both sides or in the young stages sparingly arachnoid beneath 

 but soon glabrate, prominently reticulate-veined on both sur- 

 faces; petioles 1.5-3 cm. long; inflorescence a terminal many- 

 headed panicle; heads 12-15 mm. high, heterogamous ; involucre 

 campanulate, calyculate; bracts of the involucre 8, narrowly 

 oblong or oblong-ovate, 5-6 mm. long, 1.5-3.5 nun. broad, obtuse 

 or rotund and pubescent at the apex, otherwise glabrous; ligulate 

 flowers 8, tube slender, 3-3.5 mm. long, limb usually radiate or 

 sometimes irregularly dentate and occasionally bearing reduced 

 stamens, yellow; flowers of the disk 25-30 with a tubular-cam- 

 panulate, equally 5-lobed, yellow corolla; setae of the pappus 

 copious, white; achenes glabrous. 



