Hobsoniopsis santessonii
Hobsoniopsis santessonii (Lowen & D. Hawksw.) D. Hawksw., in Sikaroodi, Lawrey, Hawksworth & DePriest, Mycol. Res. 105(4): 457 (2001)
≡ Hobsonia santessonii Lowen & D. Hawksw., in Lowen, Brady, Hawksworth & Paterson, Mycologia 78(5): 844 (1986)
Index Fungorum number: IF 467758; Facesoffungi number: FoF xxx, Fig. 1
Description:
Lichenicolous on thallus of Peltigera scabrosa. Sexual morph: Undetermined. Asexual morph: Sporodochia 190–482 µm × 180–305 µm (x = 308.2 × 264.4 µm, n = 10) erumpent, superficial, through the dorsal cortex of the host thallus, scattered or in group, grey to yellowish. Conidiophores reduced to conidiogenous cells. Conidia 9–13 µm × 5–12 µm (x = 11.1 × 8.9 µm, n = 10) solitary, or aggregated, light brown to orange, filament helicoid, multicellular, irregular, walls sparsely darkly verrucose.
Material examined: Europe, Sweden, Near the waterfall Digerfallet in the stream Tasan. Alt.: 1400 m, on thallus of Peltigera scabrosa (Peltigeraceae), R. Santesson, 14 June 1956 (F-169758, holotype).
Fig. 1. Hobsoniopsis santessonii (F-169758, holotype) a–c Herbarium specimen and habit on leaf. d Section of conidioma. e–q Conidia. Scale bars: c = 1 mm, d = 100 μm, e–q = 5 μm
Importance and role
Importance of genus to ecosystem
Species of Hobsoniopsis are parasymbiont, not harming the host. They may help in nutrient recycling in the ecosystem.
Industrial relevance and applications
The industrial applications of Hobsoniopsis has not been investigated.
Quarantine significance
The quarantine properties of Hobsoniopsis is unknown.
Biochemical importance of the genus, chemical diversity or applications
The chemical diversity and application of Hobsoniopsis has not been investigated. Fresh cultures are needed.
Diversity of the genus
Hobsoniopsis comprises only one species known on thalli of Peltigera scabrosa (Peltigeraceae). Hobsoniopsis is reported from Sweden, Norway, Finmark particularly in subalpine birch forest. Hobsoniopsis is a poorly studied genus and needs recollecting.
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