Abstract
New to the native flora of Upper Austria is the moss Microeurhynchium pumilum. A rediscovery of the moss Helodium blandowii is presented for the whole Alpes, the liverwort Sphenolobus saxicola was rediscovered in Austria. Remarkable rediscoveries for Upper Austria include Anacamptis coriophora and Anagallis foemina. New records or rediscoveries for individual districts or natural geographical units of Upper Austria include Anagallis arvensis f. azurea, Cladium mariscus, Euphorbia palustris, Isolepis setacea, Juncus subnodulosus, Limosella aquatica, Myriophyllum alterniflorum, Ophrys apifera, Pulmonaria obscura and Sagina saginoides. New to the alien flora of Upper Austria are Centaurea nigra agg., Phalaris paradoxa (also new to Lower Austria and Tyrol), Ranunculus muricatus, Sinacalia tangutica and Veronica acinifolia, as well as the moss Orthodontium lineare. Some contributions are supplemented with up-to-date grid maps for Upper Austria to illustrate their distribution. This applies to Anacamptis coriophora, Anagallis arvensis f. azurea, Cladium mariscus, Euphorbia palustris, Isolepis setacea, Helminthotheca echioides, Juncus subnodulosus, Limosella aquatica, Myriophyllum alterniflorum, Schoenoplectus mucronatus and Streptopus amplexifolius.