— 44 — 



V. ± abrupte basin versus attenuata v. (praeeipue exteriora) basi rotundata truncata interdum 

 ± cordata, ajiice rotundata v. obtusiuscula v. acutiuscula acutave, dentata basin versus saepe 

 grosse dentata ut in H. silvatico, dilute v. saturate v. obscure nridia saepe subglaucescentia, 

 subtus saepe violacea, sat mollia v. rigidiuscula; caulina 0—2 cito decrescentia radicalibus 

 ± similia lanceolata v. linearia. Inflorescentia furcata v. laxe paniculata -fc suprafastigiata 

 1- oligocepbala rarius pleiocephala; acladium 1—8 cm ( — ^js totius caulis), rami primarii 

 0- ])auci ± remoti monocepbali v. simpliciter ramosi. Involucrum ventricoso-globosum v. 

 ovatum 10 — 15 mm longum; sciuamae saepissime angustae longe acuminatae ± acutae v- 

 acutissimae subobscurae v. atrae saepe + dilute marginatae. Bracteae paucae v. complures. 

 Pili involucri densissimi v. mediocriter numerosi sat longi v. breves, 1 — 2,5 mm, albidi basi 

 obscuri v. obscuri, pedunculi dense v. modice v. disperse pilosi, caulis sat dense v. disperse 

 V. fere non pilosus, folia supra + epilosa v. densipila, subtus fere semper mediocriter v. dense 

 pilosa, pili moUes v. supra + rigidi, in margine nervo dorsali petioloque subdense v. densissimi, 

 petiolus saepe +_ longe viUosus (1 — 3 — 4 mm). Glandulae involucri pedunculique solitariae 

 V. modice numerosae, caulis superne glandulis parum numerosis obtectus vel omnino eglandulosus. 

 Flocci involucri dispersi v. + numerosi, pedunculi multiflocci v. tomentosi, caulis deminute 

 floccosus basin versus subfloccosus v. effloccosus, foUa effloccosa (v. superiora etiam subtus) 

 V. iu nervo dorsali tantum subfloccosa. Flores sat magni, saturate lutei v. aurei, stylus 

 obscurus, ligulae glabrae rarius subciliatae; achaenia + atra. 



Crescit per alpes Italiae, GalUae, Helvetiae, Germaniae australis, Austriae, Transsilvaniae, 

 Bosniae, saepissime in consortio H. dentati et viUosi. — Flor. Jul.-Aug. 



Dispositio gregum: 



a) Murrianum Zahn, in Koch Syn. p. 1797. Habitus H. dentati, caulis oligocephalus, acladium 

 longum, capitula sat magna obscura ± dense et obscure villosa, glandulae ± sparsae. 



b) Traohselianum Zahn 1. c. p. 1799. Habitus inter H. dentatum et H. subspeciosum. Formae 

 intermediae inter H. dentatum et H. bifidum; v. inter H. dentatum Grex Dentatiforme v. 

 Espallens et H. silvaticum (v. bifidum) quasi intermediae. Caulis saepe pleiocephalus, acladium 

 saepe breve, eapitula minora modice v. dense floccosa, dilute breviterque subvillosa v. tantum 

 disperse pilosa fere eglandulosa. Folia ± lanceolata in petiolum d= angustata ± glabra 

 dilute viridia subglaucescentia rigidiuscula, exteriora saepe ± spathulata. 



c. Incisum Zahn 1. c. 1800. Habitus H. silvatici, at capitula maiora minus numerosa, acladium 

 longius, ligulae speciosae, squamae acutae v. acutissimae subvillosae. 



Grex Murrianum. 



Subspecies Murrianum Arv.-Touv. in Utt. 1890, et apud J. Briquet in BuU. herb. 

 Boissier II (1894) p. 629 pp.; Murr in Progr. d. Realschule Innsbruck (1891) p. 55 et in 

 sched. ad herb. norm. nov. ser. no. 3126 et Deutsche bot. Monatsschr. (1898) p. 5. — CauUs 

 (15 — ) 25—30 cm altus. Folia rosularia 5 — 7 sat longe petiolata, exteriora ovata obtusissima 

 vel cochleariformia, interiora oblonga v. lanceolata acutiuscula v. acuta, abrupte v. sensim 

 in petiolum angustata, dentata v. grosse dentata (praecipue basin versus) v. inciso - dentata 

 dentibus + in petiolum descendentibus, omnia canoviridia glaucescentia moUia ; caulina — 1 

 (—2) lanceolata v. linearia saepe petiolata et + dentata, inferius haud muUum supra basin 

 insertum. Inflorescentia 1- vel furcato 2 ( — 3) cephala; acladium 3,5 — 8,5 cm longum, rami 

 primarii — 1 ( — 2) saepissime monocephali. Involucrum 12 — 15 mm longum ovato-globosum 

 demum + depressum; squamae subangustae acutiusculae v. acutae subnigrae margine obscure 

 virides; bracteae 2. PiU in involucro satis uumerosi 1 — 2,5 mm longi diluti basi obscuri, 



