of the Class Composita. 247 



adpressa, elliptica, obtusa, margine copies^ denticulata, 

 subcoriacea, reticulato-venosissima, rugosa, subti\s pilosa, 

 supra punctis elevatis scabra, utrinque viridia, pollicaria 

 V. sesquipollicaria. Scapus rectissimus, filiformis, cubita- 

 lis, undique lan^ adpressA, niveA obtectus, squamis paucis 

 brevissimis adpressis instructus. Flos erectus. Involucrum 

 hemisphaericum, triplici ordine polyphyllum, imbricatum : 

 squamis lanceolato-linearibus, setaceo-acuminatis, extiis la- 

 nuginosis ; intimis disco longioribus. Receptaculum nudum, 

 scabriusculum. F/oscj/Zilutei ? radii plures, bilabiati, foemi- 

 nei, singulo ordine dispositi, staminibus sterilibus, radium 

 distinctum constituentibus ; labia exteriore amplo, ligulato, 

 obtus^ tridentato, [4-nervio ; interiore lineari-angustissimo, 

 obtuso, canaliculato, erecto, binervio ; disci copiosi, tubu- 

 losi, 5-fidi, hermaphroditi : segmentis linearibus, obtusis, 

 erectis, binerviis. Filamenta gracilia, leevia. Antliera ap- 

 pendiculi lineari-lanceolat^ mucronat^ cartilagine4 coro- 

 natae, basi bisetosae : setis ramulosis, subplumosis. Stigfna 

 utriusque bilobum : lobis brevibus, adpressis, obtusissimis, 

 pruinosis. Achenia linearia, ancipiti-compressa, sericeo- 

 villosa. Pappus capillaris, persistans, sordide cinereus : 

 radiis duplici ordine copiosis, denticulato-scabris. 



This genus, constituting an intermediate group between Chap- 

 talia and Leria, differs from the former in the regularity of the 

 limb of the florets of the disk, and from the latter in the female 

 florets of the circumference forming a distinct radius, and being 

 arranged generally in a single series. The Onoseris purpurata of 

 Willdenow, and the hieracioides and speciosa of M. Kunth, are 

 clearly referable to the genus, and perhaps also the Chaptalia 

 runcinata ; but I doubt whether any of the other plants hitherto 

 included in it are really species of this genus. 



VOL. XVI. 2 K Leria. 



