[Vol. 10 



86 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



ogamous, 10-15 mm. high; involucres campanulate, short-caly- 

 culate; bracts of the involucre 13, linear-lanceolate or lanceolate- 

 oblong, 7-8 mm. long, 1.5-2 mm. broad, acute or obtuse, glabrous 

 except at the pmicillate tip, green or more or less purple; ligul- 

 ate flowers 6-8, purple, tube slender, 5-10 mm. long, somewhat 

 outwardly curved, ligules small, oblong, about 5 mm. long; disk- 

 flowers 18-20, corollas tubular-campanulate, equally 5-dentate, 

 more or less purple; pappus bristles white, shorter than the 

 corollas; achenes striate, glabrous. 



Bolivia: vicinity of Sorata, alt. 21)00 m., October, 1858, Man- 

 don 147 (Gray Herb., fragment and photograph in Mo. Bot. 

 Gard. Herb.), type; Unduavi, Noryungas, alt. 3300 m., No- 

 vember, 1910, Buchtien 3086 (N. Y. Bot. Gard, Herb., fragment 

 and photograph in Mo. Bot. Gard. Herb.) ; San Felipe, Provin- 

 cia de Sur Yungas, March 20, 1920, Holway & Holway 627 (U. 

 S. Nat. Herb.). 



The species here described bears a superficial resemblance to 

 S. biacuminatus Rusby, but differs in having purple flowers and 

 in having a long slender tube and very small rays to the ray- 

 flowers. It is also related apparently to S. rejlexus HBK., which 

 is said to have very entire reflexed leaves. 



Senecio Microchaete (Benth.) Wedd. Chlor. And. 1:100. 1855- 

 57. 



Microchaete corymbosa Benth. PI. Hartw. 196. 1845. 



Colombia: near Bogota, Hartweg 1086 (Gray Herb.); wet 

 paramo valley, Mt. Chuscal, west of Zipaquira, Department of 

 Cundinamarca, alt. 3100-3300 m., October 22, 1917, Pennell 2580 



(N. Y. Bot, Gard. Herb., Field Mus. Nat. Hist. Herb., U. S. Nat. 

 Herb., and Mo. Bot. Gard. Herb.); Guadalupe, near Bogota, 

 July 10, 1917, Bro. Ariste-Joseph A1/+ (U. S. Nat. Herb.). 



Doctor Pennell's specimens agree well with Weddell's charac- 

 terization of the above species and also with the original des- 

 cription and specimen of Microchaete corymbosa Benth. on which 

 Senecio Microchaete Wedd. was founded. The material also ac- 

 cords in all essential details with the description of Senecio pun- 

 gens (HBK.) DC, from which it is doubtful if S. Microchaete 

 Wedd. can be separated satisfactorily. It seems desirable, how- 

 ever, to retain Weddell's name until a careful comparison can 

 be made with the type or authentic specimens of L. pungens 

 (HBK.) DC. 



Senecio modertus Wedd. Chlor. And. 1:105, pi 18B. 1855- 



1857, not Phil, in Linnaea 28:745. 1856. 



