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Name derivation: |
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Hildenbrandia= Named for Professor F. E. Hildenbrandt of Vienna, an Austrian physician and naturalist rubra= L. rubra: red Common name= rusty rock) |
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Classification:
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Hildenbrandia Nardo, 1834; There are 42 species of which 16 have been taxonomically acceptedOrder Hildenbrandiales; Family Hildenbrandiaceae |
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Morphology: |
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Crusts thin (80-240 µm thick) and firmly attached; also non-calcified, fleshy, smooth, and pale orange in sun to bright red in the shade. Its basal layer consists of irregularly radiating branched filaments, which forms compact laterally connected rows that are mostly simple. Tetrasporic conceptacles common, subspherical, scattered, and with a single pore. Tetrasporangia elongate and with obliquely to irregularly cruciate divisions. |
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Similar genera: |
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Habitat: |
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Found in subtropical to tropical streams. May be epibiontic. One recent find in Lake Huron at 21 m depth. |
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References: |
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Guiry, M.D. and G.M. Guiry 2013. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway. http://www.algaebase.org; searched on 19 September 2013. Wehr, J.D. and R.G. Sheath 2003. Freshwater Algae of North America -- Ecology and Classification. Academic Press (imprint of Elsevier). |
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