357 



30. OXYDON n. g. 



{Loocodontis sp. Cass. Dict. 1. c. XX VII. p. 255. 

 ChaptaUac sp. Kunth.) 



Capitulum inaequaliflGrum, floribiis Q 2-scrialibus in 

 anibilu, quorum exterlorcs radiant, reliquis $. (?; cf? Kth. 

 1. c.) Achaenium rostratum, rostro longissimo, fillformi, 

 (5-) costatum, glabrum. Pappus pluriserlalis, brevis, sub- 

 aequalis. Corolla florum $ regularis, 5-dentata, ore quam 

 lubiis parum ampllori, florum 2 IJngulata, liiigula subinte 

 gerrima, seriei ext. radlanti, obovato-linearl, stylo, invo 

 lucro iuboque ipso longiori, seriei inlerioris obsoleta, 

 slylo, involucro tuboque nmlto breviori. Antherae in flo- 

 ribus cT alis oblongo-elliplicis, oblusis, (superne rlgido- 

 ciliatis) in floribus 2 ne vesligia quidem. Stylus basin 

 versus attenualus. Involucrum turbinatum, floribus Ion" 

 gius, fructibus subacqualc, foliolis lineari-lanccolatis. 



O. bicolor * {Lojcodoii lojigipcs Cass. Dict. l. c. 

 Chaptalia riincinaia Kunth nov. gen. IV. p. 5. lab. 303. 

 Tussilago bicohr W. hrb. N. 15714.) 



Herba perennis , radice 1 — pluricauli , fibrosa , fibris 

 crassis, simpliciusculis. Caules simplicissimi, graciles, ob- 

 solete tomentosi, obscure purpurascentes, nutantes, 3 — 6 

 poUicarcs nonnisi basi ima lolia in rosulam digcsta pro- 

 trudunt, caeterum squamas adprcssas, frequentcs, scmilan- 

 ccolatas gerunl. Capitula aeque magna ac in Hieracio 

 dubio. Folla altcrna, peliolata, pcnninervia, nervis secun- 

 darils obsoletissimls, avenia (venosa Kunth 1. c.) oblongo- 

 obovala, dcntato-runcinala, laciniis mucronulalis, inlcger- 

 rirnls, acuta, basi in petiolos brcves basi dilatatos, caulem 

 imum amplexantcs attenuata, supra virldia, glabra, subtus 

 lomcnto adprcsso, dcnso nivea, pctiolis adjcclis \h — 2" 

 longa, 4 — 7" lata. Involucrum 8'" longum, foliolis cx- 

 lus obsidctissimc tomcntosLs s. subglal)rls. — — llum- 



