NOVA ADDENDA AD FLORAM PATAGONICAM 15 



albis (3-6 mm long.) denticulatis, ovariis glabris 5-costat¡s, 

 costis subalalis. Achaenia malura deíicientia. 



271. Senecio sericeo-nitens Speg. (Ph.) = S. paíagonicus Ph . — 

 Speg., Planl. Pat. austr., n. 218 — S. Morenonis OK., I. c, 

 p. 170. 



Ilab. Frequens per totam Patagoniam raediam aridiorem, per 



¡mu. 1892-900 (C. A., C. S., Koslowskv, Mauri, etc.). 



272. Senecio coi.u-huapiensis Speg., n. sp. 



Diag. Discoideus, albo-pcmnosus, radice longe vaiideque ramosa, 

 ramis in eolio dense fasciculalo-congesíts, subaequilongis dense 

 folialis, caespilem subhemisphaericum efficienlibus, foliis paten- 

 tissimis parvis sessilibus lineari-subspal/iulatis grosse 3-ü-den- 

 tatis, margine revolutis, capitulis pedicellis aequilongis v. pa- 

 rum longionbus subimbricato-braelcosis suffultis, late campa- 

 nulatis, squamis linear i- lanceo latís iS incanis ápice viridibus 

 glabralisque non v. vixciliatis, jlosculis c. 50, ac/iaeniis gtaber- 

 rímis. 



Hab. In aridis sabulosis prope Lago Colu-huapi, Aut. 1900 (C. A.). 



Obs. Radix lignosa cylindracea graeililer laxe praelongeque ra- 

 mosa (15-50 cm lotiíí.); rami ex eolio radiéis numerosissimi 

 fasciculatim eaespitose exsurgeutes (50-70 mm long. = 2 mm 

 erass.)simplices v. rariussupernebreviter pauciramululosi ara- 

 neose v. pannose tomentoso-albi, dense foliati. Folia palen- 

 tissima lineari-oblanceolata v. subspathulata (7-15 mm long. = 

 3-5 mm lat.) utrinque in juventute crasse pannoso-candida, 

 dein zhve eineraseentia, coníerlissima, Ínfima integra revo- 

 lula (5-7 mm long. = 1 ,5-2 mm lat.), media et suprema 3-5- 

 (rarissime7) pinnatodentala (jugis dentium 1-2), rachi lobis- 

 que latís (1,5-2 mm lat.) obtusiusculis margine revolutis. 

 Capitula in ramis aerogena solitaria, pedunculis exertis (15-20 

 mm long. = 1-1,5 mm crass.) albo-pannosis, bracteis eonco- 

 loribus 5-10 ovatis integerrimis aeutis basi subamplexieauli- 

 bus (3 mm long.) ornatis suffulta, breviter conferteque cali- 

 culata, squamis 13 lanceolalis extus arachnoideo-incanis ápice 

 aeutis glabratis virescentibusque (7 mm long.) non v. vixci- 

 liolatis, intus glaberrimis, margine angustissime hyalino- 

 scariosulis, flosculis ómnibus tubulosis flavis (5-6 mm long.), 

 antheris subscariosis exertis, pilis pappi tenuissimis albis mi- 



