656 



account of the form of the stem-leaf and the leaf-insertion, is to be 

 referred to the more typical Cerinthoidea, and has closely allied forms 

 in the British Isles. It is also very closely related to the one below, 

 but is distinguished by its broader leaves, broader phyllaries with 

 more floccose margins, fewer glands on its involucres and still 

 fewer on its peduneles. 



20. HIERACIUM MELANOCHROTUM Dahlst. n. sp. 

 (Tab. XII. Kig. 6.). 



Caulis 15 — 35 ctm. altus, flexuosus, 1 — 2-folius, basi longis- 

 sime et dense pilosus, medio pilis sparsis — raris, superne pilis 

 obscuris sparsis ( — densiusculis) obtectus, medio glandulis raris, 

 superne sparsis obsitus, apice parce floccosus. — Folia basalia 2—3, 

 extimum + ellipticum — obovatum denticulatum obtusum , inte- 

 riora + ovato-lanceolata — lanceolata, sæpe supra medium latis- 

 sima, longe petiolata, in petiolum + longe deeurrentia, integra v. 

 præsertim ad basin denticulata; folia caulina, infimum prope basin 

 sæpe ima basi affixum, + lanceolatum v. obovato-lanceolatum + 

 longe acutum — acuminatum infra medium + contractum et basi 

 iterum + dilatatum + auriculato-amplectens, integrum v. præcipue 

 ad basin + irregulariter sparsim — dense + anguste denticulatum, 

 summum + lineari-lanceolatum - - lineare + integrum, longe acu- 

 tum, basi + amplectente et sæpe infra medium constrictum ; basalia 

 in petiolis, omnia in marginibus et in nervo dorsali vulgo longe et 

 dense pilosa, subtus in pagina densiuscule pilosa, supra parce pi- 

 losa — glabra, in nervo dosali parce stellata. — Inflorescentia fur- 

 cata, 2 — 3-cephala, ramis arcuatis monocephalis acladium 50 — 80 mm. 

 longum + superantibus (v. inflmo haud superante), pilis obscuris 

 sparsis brevibus et glandulis paullo frequentioribus obtectis, inferne 

 sparsim superne densiuscule -- dense stellatis. -- Involucrum mag- 

 num 15 — 16 mm. longum, sat crassum , basi ovata postea rotun- 

 data, squamis exterioribus lanceolato-linearibus obtusiusculis, inter- 

 mediis triangulari-lanceolatis et interioribus e basi lata lanccolatis 

 sensim in apicem + obtusum attenuatis, intimis paucis apic'e an- 

 gustiore subacutis, omnibus intimis exceptis apice comosis, margini- 

 bus præcipue ad basin anguste sed + conspicue floccosis, cæterum 

 pilis obscuris mediocribus 4 densis et glandulis densiusculis ob- 

 tectis. — Calathium magnum sat radians, 40—45 mm. diametro. 

 — Ligulæ breviter dentatæ, apice glabræ. Stylus fuscus. 



