1923] 



GREENMAN — SOUTH AMERICAN SENECIOS 85 



In general the species here described stands near S. prunifolius 

 Wedd., but it differs in leaf-outline and in being glabrous 

 throughout. 



Senecio Magnusii Hieron. in Engl. Bot. Jahrb. 28:612. 1901. 



Colombia: edge of tree "island" in paramo valley, Mt. Chus- 

 cal, west of Zipaquira, Department of Cundinamarca, alt. 3200- 

 3300 m., October 22, 1917, Pennell 2589 (N. Y. Bot. Gard. Herb, 

 and Mo. Bot. Gard. Herb.) ; forest on mountain, south of Sibate, 

 Department of Cundinamarca, alt. 2800-3000 m., October 13-15, 

 1917, Pennell 2481 (N. Y. Bot. Gard. Herb, and Mo. Bot. Gard. 

 Herb.). 



The specimens here cited agree in all essential details with the 

 original description of S. Magnusii Hieron. and are hereto re- 

 ferred pending a comparison with type material of this species. 

 The specimens at hand also possess several characters in com- 

 mon with L. disciformis Hieron. 



Senecio medullosus Schz. Bip. in Bull. Soc. Bot. Fr. 12:80. 

 1805, name only; in Linnaea 34:531. 18G6, name only. 



Verisimiliter frutex erectus; caulibus ramisque teretibus vel 

 plus minusve striato-angulatis glabris; foliis alternis petiolatis 

 lanceolatis vel lanceolato-oblongis 5-18 cm. longis 1-4.5 cm. latis 

 acuminatis acutis remote calloso-denticulatis vel sinuato-subser- 

 ratis basi cuneatis juventate parcissime puberulentis nisi in ner- 

 vo supra medio utrinque mox glabratis ; petiolis circiter 1 cm. 

 longis; inflorescentiis terminalibus paniculatis patentibus parce 

 puberulentis; capitulis heterogamis 10-15 mm. altis; involucris 

 campanulatis, brevi-calyculatis ; bracteis involucri 13, lineari- 

 lanceolatis vel lanceolato-oblongis 7-8 mm. longis 1.5-2 mm. latis 



acutis vel obtusis glabris viridibus vel plus minusve purpuras- 

 centibus; floribus liguliferis 0-8 purpurascentibus, tubo gracile 

 5-10 mm. longo curvato, ligulis parvulis oblongis circiter 5 mm. 

 longis; floribus disci 18-20, corollis tubulo-campanulatis aequa- 

 liter 5-dentatis plus minusve purpurascentibus; pappi setis al- 

 bidis corollo brevioribus; achaeniis striatis glabris. 



Shrub, probably erect; stem and branches terete or more or 

 less striate-angled, glabrous; leaves alternate, petiolate, lance- 

 olate or lanceolate-oblong, 5-18 cm. long, 1-4.5 cm. broad, acum- 

 inate, acute, remotely callous-denticulate or sinuate-subserrate, 

 cuneate at the base, glabrous or very sparingly puberulent in the 

 young stages, soon becoming glabrous on both surfaces except 

 along the midrib above; petioles about 1 cm. long; inflorescence 

 a terminal spreading sparingly puberulent panicle; heads heter- 



