Forschen und Sammeln.

Abstract
Contributions to the knowledge of the genus Hieracium L. s. l. (Compositae) in the province of Belluno (Italy)
Intensive field studies in the Province of Belluno (Veneto, Italy) yielded over 2000 herbarium specimens. Furthermore, 889 specimens of the historical Hieracium collection of the herbarium of the University of Padua (PAD) were examined. As a result, two new species (Hieracium falcadense, H. padonense) and three new subspecies (H. glabratum subsp. valparolae, H. polatschekii subsp. elocatigenum and H. racemosum subsp. leiopsiforme) are newly described for science.
The names of Hieracium pallescens subsp. poperae, H. pallescens subsp. pseudoreites and H. pallescens subsp. sentinellae, published after 1 January 1935 only with a German description and thus invalid, are validated.
Hieracium armerioides var. phaeocephalum is raised to subspecies rank and the name is lectotypyfied.
Hieracium aurantiacum subsp. flavicolor and H. sphaerocephalum subsp. vittatiflorum are transferred to the genus Pilosella.
Hieracium antholzense, H. murorum subsp. nemorense, H. oligodon, H. pallescens subsp. anthyllidifolium, H. pseudobupleuroides, H. valdepilosum subsp. subalpinum and H. valdepilosum subsp. subsinuatum are new records for the province of Belluno.

Abstract
New and remarkable bryophyte records for South Tyrol (Province of Bozen/Bolzano, Italy). IV.
Three bryophyte species (Cephaloziella colombae, Hydrogonium amplexifolium, Tortella angustifolia) are new to Italy, three species (Fossombronia wondraczekii, Pseudomoerckia blyttii, and Tortella pseudofragilis) are new to the Trentino-Alto Adige region, and Riccia
bifurca is recorded with certainty for the first time in the region. Six species are new to South Tyrol: Peltolepis quadrata, Riccia cavernosa, Campylopus introflexus, Grimmia arenaria, Schistidium marginale and Tortella alpicola, and for Tortella fleischeri a first reliable record for South Tyrol is provided. Grimmia atrata was last recorded 160 years ago (also the first recent record for Italy). Nowellia curvifolia, Dicranum tauricum, Meesia minor and Pohlia obtusifolia were found again after more than 120 years, Sciuro-hypnum latifolium after more than 110 years and Mylia taylorii after 100 years. Other rare or otherwise interesting species in South Tyrol and Italy are Anastrepta orcadensis, Gymnomitrion revolutum, Hygrohypnum styriacum, Mnium spinulosum, Pseudostereodon procerrimus, Rhizogemma staphylina, Sciuro-hypnum curtum, Tortella commutata and T. tortuosa s. str.
The number of bryophyte taxa known from South Tyrol increases from 933 to 950.