p. D. SELL & C. WEST 



235 



Ab H. duricipiti F. J. Hanb. squamis involucri epilosis ligulis glabris, ab H. pellucido 

 Laestad. forma indumentoque foliorum differt. 



Caulis ad 40 cm. altus, striatus, basi parce pilosus, plus minusve floccosus, superne 

 sparse glanduloso-pilosus. Folia pallide viridia, saepe praecipue infra purpureo-suffusa, 

 radicalia patentia; primordialia parva, rotundata, mucronata, remote denticulata, basi 

 truncata ; posteriora obovata, ovata vel ovato-elliptica, obtusa mucronata/ usque ad acuta, 

 plerumque ab omni parte denticulata, nonnunquam vix alte sinuata vel basin versus 

 cuneatam vel raro subtruncatam acute atque alte dentata; caulina 1-3, inferiora elliptico- 

 ovata, acuta, similiter dentata, basi cuneata vel subtruncata, petiolata usque ad subsessilia, 

 superiora plerumque parva bracteiformia ; omnia utrinque plus minusve pilosa, pilis 

 paginae superioris brevibus subsetiformibus, marginibus valde ciliatis, petiolis brevius- 

 culis villosis. Inflorescentia paniculato-corymbosa, compacta, ad 20-cephala, acladio brevi 

 ramis brevibus erectis; pedunculi floccosi, pilis rigidis inaequalibus nigris glandulosis 

 dense induti. Involucra satis parva, inferne rotundata. Squamae in gemmis incumbentes, 

 nigrescenti-virides, intimae pallidiores, lineari-lanceolatae, acutae, marginibus floccosis, 

 subsenescentes, pilis glandulosis densis inaequalibus nigris indutae, pilis simplicibus 

 nullis. Ligulae aureae, apice glabrae. Styli lividi. Alveoli receptaculi marginibus 

 inciso-dentatis. Achaenia nigrescentia, 2-5-3 mm. longa. 



Stem up to 40 cm. high, striate, sparingly pilose at the base, it floccose, sparsely 

 glandular above. Leaves light green, often suffused with purple, especially beneath; 

 the radical spreading; the primordial small, rotundate, mucronulate, remotely denticulate, 

 truncate based; the later obovate, ovate, or ovate-elliptic, obtuse-mucronate to acute, 

 mostly denticulate throughout, sometimes shallowly sinuate or sharply and deeply dentate 

 towards the cuneate or occasionally subtruncate base; the cauline 1-3, the lower elliptic- 

 ovate, acute, toothed like the radical leaves, cuneate-or subtruncate-based, petiolate to 

 subsessile, the upper usually small and bractlike; all i pilose on both surfaces, the hairs 

 on the upper surface short and subsetiform, the margins strongly ciliate, the petioles 

 rather short, villous. Inflorescence paniculate-corymbose, compact, up to 20-headed, 

 with short acladium and short, erect branches; peduncles floccose and densely clad 

 with strong, unequal, black, glandular hairs. Heads rather small, rounded below. 

 Phyllaries incumbent in bud, blackish green, the innermost paler, linear-lanceolate, acute, 

 floccose on the edges, slightly senescent, with dense, unequal, black glandular hairs. 

 Ligules golden yellow, glabrous-tipped. Styles livid. Margins of the receptacle pits 

 incise-dentate. Achenes blackish, 2-5-3 mm. long. 



Holotype : Ysolion Duon, Caernarvon, Griffith, 1893, in Herb. A. Ley (Herb. Univ. 

 Birmingham). 



Hieracium angustatiforme Sell & West, sp. nov. 



Ab H. angustato Lindeb. ac H. rhomboide (Stenstr.) Johanns. squamis involucri 

 pedunculisque minus glanduloso-pilosis, foliorum marginibus valde ciliatis differt, 

 praeterea ab H. cacuminum (A. Ley) A. Ley foliis aequaliter serratis distinguitur. 



Caulis ad 40 cm. altus, gracilis, striatus, inferne vel nonnunquam per totam longi- 

 tudinem purpurascens, glabrescens. Folia obscure viridia; radicalia numerosa atque 

 patentia, ovato-elliptica, elliptico-lanceolata vel lanceolata, obtusa mucronata usque ad 

 acuta, tenuiter aequaliter acute serrata, basi cuneata; caulina 0-2, inferiora lanceolata 

 usque ad lineari-lanceolata, acuta, tenuiter serrata vel denticulata, petiolata vel sessilia; 

 omnia supra glabra infra plus minusve pilosa, marginibus longe ciliatis, petiolis longe 

 pilosis. Inflorescentia furcato-corymbosa, 1-4-cephala, ramis sublongis gracilibus sub- 

 erectis acladium longum superantibus ; pedunculi paulum floccosi atque pilosi. Involucra 



