— 182 — 



losusque, basin versus subpilosus. Folia rosularia 3—6 obscure gramineo- v. sublutescenti- 



\iridia, saepe mollia, subtus pallidiora, utrimque mediocriter v. sat dense v. subtus densius 



pilosa, rarius ± glabrescentia, in margine ± dense ciliata, 1 — 3 mm, et disperse sparsimve, 



rarius modice glandulosa, in nervo dorsali, rarius folia caulina in tota parte aversa subfloccosa, 



exteriora brevius petiolata, plerumque ovata, abrupte in petiolura contracta, obtusa, interiora 



longius petiolata, oblongo v. lanceolata, in petiolum sensim angustata, obtusa v. acuta, omnia 



praecipue basin versus leviter v. profunde sinuato-dentata v. -serrata, interdum nonnullis 



dentibus magnis praedita, rarius tantum denticulata; folia caulina 1—2 (—4, rarissime com- 



pluria) plerumque cito decrescentia, iuferius petiolatum radicalibus simile, sequentia lanceolata 



basi cimeata sessilia v. subpetiolata, dentata, summum lineari-lanceolatum v. lineare. Inflores- 



centia alte fui-cata v. laxe paniculata, acladium 8—50 mm longum, rami primarii 1—4 (—5) 



remoti erecti saepe stricti, simpliciter, rarius dupliciter ramosi, capitula 2 — 7 ( — 20). Invo- 



lucrum 10 — 13 ( — 15) mm longum oblongo-ovatum, squamae sublatiusculae v. angustae 



acuminatae obtusiusculae v. (interiores) acutiusculae v. acutae apice ± barbulatae, nigrae v. 



obscurae (interiores ± dilute v. subviridi-marginatae), mediocriter v. sat dense pilosae glandu- 



losaeque, pilis 1 — 1,5 mm longis canescentibus nigris intermixtis, v. ± epilosae densissime 



glandulosae, subeffloccosae v. modice floccosae. Pedunculi supeme tomentosi, mediocriter v. 



(supeme) dense nigro-glandulosi, epilosi v. disperse v. mediocriter pilosi, pilis obscuris v. nigris, 



1 mm longis. Flores plerumque aureolutei, ligulae subpilosae, apice mediocriter sparsimve 



ciliatae, stylus obscurus, achenia fere atra. 



In ditione H. alpini sed saepe magis descendens. Scandinavia, Rossia borealis 



Scotia, in Sudetis, in Alpibus Carpatho-Transsilvanicis, in Alpibus Austriae, Bavariae, Italiae 



borealis et Helvetiae. — Flor. lul., Aug. 



Dispositio gregum: 

 1) Folia ± sensim in petiolum angustata dietincte glandulosa. 



a) Atratum Zahn, in Koch Syn. (1901) p. 1847. Involucra et pedunculi pilis glandulisque varie 

 mixtis obsita; folia sordide v. sublutescenti-viridia. 



b) Polycephalum Zahn, in Kooh Syn. p. 1848. Involucra et pedunculi dense glandulosa sparsim 

 pilosa; folia caulesque dilute gramineo-viridia. 



c) Schroeterianum Zahn, ffierac. d. Schweiz (1906) p. 388. Involucra et pedunculi epilosa, glan 

 dulis numerosissimis saepe longis munita. — Transitus atratum — >• Bocconei. 



1* Folia ovata v. lanceolata basi truncata, rotundata v. cito angustata, fere eglandulosa. 



d) Submurorum Zahn, in Koch Syn. 1. c. Habitu H. silvatici. 

 a) Atratum Zahn. 



Subspecies dolichaetum Arv.-T. et Chenev., BuU. Soc. bot. Geneve IX p. 9; Zahn, in 

 Schinz et Keller, Flora d. Schw. ed. 2 II (1905) p. 314; non Koch Synops. (1901) p. 1850; 

 H. atratum eualpestre Zahn, in Koch Syn. p. 1847. — Caulis 25—45 (—50) cm altus, superne 

 mediocriter (0,5—1 mm), infeme subdense pilosus, 2,5 mm. Folia rosularia exteriora elliptico- 

 V. oblongo-spathulata obtusa rotundata, interiora oblonga v. oblongo-lanceolata acutiuscula v. 

 breviter acuta, exteriora cito, interiora sensim in petiohim alatum angustata, moUia, lutescenti- 

 sordideque viridia, raro subpurpureo-colorata, supra disperse pilosa, 0,5 mm, subtus modice 

 molliterque pilosa, 0,5 — 1 mm, in margine nervoque dorsali et in petiolo dense pilosa, 1— 2,5mm; 

 et disperse glandulosa, leviter sinuato-denticulata v. plerumque dentata, dentibus numerosis, 

 caulina 2 oblongo-lanceolata v.lanceolatapluridentata,interdumtertium folium caulinum evolutum, 

 lineare, vel in formis humilibus unum tautum evolutum. Acladium 15—50 mm longum, rami 



