638 



H. epileucum is morphologically related to the vnlgatum-type; 

 H. epileucoides on the other hånd, to the rigidum-type, and probably 

 also genetically to the form-group belonging to H. rigidum. 



II. Rigida Lbg. 



7. HIERACIUM SIMMONSIANUM Dahlst. n. sp. 

 (Tab. XI. Fig. 6.) 



Caulis 30 — 50 ctm. altus, robustus, rigidus 3 — 5( — 6)-folius, 

 sæpe ex axillis fol. summorum v. a medio ramosus, inferne pilis 

 longis densis — crebris, medio sparsis — parcis vestitus, superne 

 parce pilosus — subglaber, apice parce stellatus, basin versus fere 

 elloccosus. — Folia basalia florendi tempore emarcida v. 1 — 3, sæpe 

 inter se paullum distantia, extimum + obtusum, intermedia + lan- 

 eeolata — ovata, basi interdum truncato-ovata vulgo cuneata, + acuta, 

 intimum + ovato-lanceolatum — lanceolatum, + acutum, omnia a 

 basi ad medium v. supra medium denticulata — dentata, dentibus 

 paucis 2 — 4; folia caulina cito decrescentia , inferiora internodia 

 vulgo æquantia v. iis longiora, superiora quam internodia vulgo 

 breviora, tertiam v. dimidiam partern eorum vulgo æquantia, in- 

 feriora nunc petiolata ovali-lanceolata, nunc + lanceolata sessilia, 

 2 — 3-dentata v. denticulata, acuta, superiora lineari-lanceolata den- 

 ticulata — dentata et summa + linearia + integra, in apicem lon- 

 gum, acutum protracta; omnia saturate viridia in petiolis et in 

 nervo dorsali + stellato densiuscule — sat dense pilosa, subtus 

 sparsim pilosa, supra glabra — parce pilosa. — Inflorescentia ramis 

 ex axillis fol. summorum 1 — pleiocephalis ortis deorsum sæpe in 

 determinata, + paniculata, ramis inferioribus brevibus, summis 

 acladium (5 — )25 — 50 ctm. longum æquantibus v. vulgo superantibus, 

 inferne parce apicem versus sparsim — densiuscule floccosis, in- 

 ferne subglabris, superne pilis rigidiusculis sparsis v. passim den- 

 siusculis obtectis v. parce pilosis — glabriusculis glandulis(|ue in- 

 ferne nullis, superne solitaribus — raris obsitis. — Involucra sat 

 magna atroviridia, 13 — 14 mm. longa basi ovata — turbinata, postea 

 fere rotundala, squamis plurimis, exterioribus linearibus — elongate 

 triangularibus (v. ovato-lanceolatis) + oblusis, paucis in petiolum 

 descendentibus, intermediis e basi lata lanceolatis, cito in apicem 

 angustum obtusiusculum attenualis, intimis marginibus + late viri- 

 descentibus, c basi lata elongate lanceolato- linearibus in apicem 



