1923] 



GREENMAN — SOUTH AMERICAN SENECIOS 8£ 



t> 



basi rotundatis vel cuneatis supra glabris subtus juventate 

 arachnoideo-puberulentis mox glabratis; petiolis .5-2 cm. 



longis paululo alatis et basi abrupte ampliatis 



plexicaulibusque ; inflorescentiis terminalibus mn 



niculatis; rhachis paniculatae geniculates glabris 



am 



puberulentis 



mm. altis; involucris an- 



guste campanulatis calyculatis; bracteis involucri sa< 

 lanceolatis 3-3.5 mm. longis glabris; floribus disci 1 

 setis albidis ; achaeniis glabris. 



Scandent shrub ; stems slender, glabrous, more or less flexuous 

 or geniculate; leaves alternate, petiolate, oblong-lanceolate to 

 ovate-lanceolate, 2.5-6 cm. long, 1-2.5 cm. broad, acute or acum- 

 inate and submucronate, entire or subentire, rotund or cuneate 

 at the base, glabrous above, in the early stages very sparingly 

 arachnoid-puberulent beneath but soon glabrate; petioles .5-2 

 cm. long, narrowly winged, abruptly expanded at the base and 

 auriculate-amplexicaul ; inflorescence a terminal many-headed 

 panicle ; rhachis of the panicle geniculate, glabrous or very spar- 

 ingly puberulent; heads discoid, 6-8 mm. high; involucre nar- 

 rowly campanulate, calyculate ; bracts of the involucre usually 8, 

 linear-lanceolate, 3-3.5 mm. long, acute, glabrous; flowers of the 

 disk 12-14; bristles of the pappus white; achenes glabrous. 



Colombia : thickets on ridges, Sierra del Libano, Santa Marta, 

 alt. 1800-2000 m., January 19, 1899, Herbert H. Smith 1987 

 (Mo. Bot. Gard. Herb., type; Gray Herb., in part; U. S. Nat. 

 Herb., in part; N. Y. Bot. Gard. Herb., in part; Field Mus. Nat. 

 Hist. Herb.). 



The plant here cited was distributed under the name "Senecio 

 decompositus Schz. Bip." with which species it was doubtfully 

 identified, but from which it is readily distinguished by the 

 stipule-like amplexicaul appendages at the base of the petiole 

 and by the strongly geniculate main axis of the inflorescence. 



Senecio involucratus (HBK.) DC. Prodr. 6:422. 1837; Wedd. 



Chlor. And. 1:93. 1855-57. 



Cacalia involucrata HBK. Nov. Gen. & Sp. 4:166. 1820. 



Aetheolaena involucrata Cass. Diet. Sci. Nat. 48:453. 1827. 

 Ecuador: Nabon, September 25, 1918, Rose, Pachano & Rose 

 22995 (U. S. Nat. Herb, and N. Y. Bot. Gard. Herb.). 



Senecio iodopappus Schz. Bip. in Bonplandia 4:55. 1856, name 



only (jodopappus) ; Wedd. Chlor. And. 1:116, pi 20, jig. B. 

 1855-57. 



