Australian Biological Resources Study
| Checklist of the Lichens of Australia and its Island Territories | ||
| Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References | ||
| Pyxine nubila Moberg | ||
Norweg. J. Bot. 27: 189 (1980) Culbersonia nubila (Moberg) Essl., Lichen Fl. Greater Sonoran Desert Region 1: 164 (2002). T: Lake Naivasha Hotel, Rift Valley Province (K3), Kenya, 0°46’S, 36°24’E, alt. c. 2000 m, 1979, R.Moberg 4488a; holo: UPS n.v. |
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| Thallus 5–10 cm wide, loosely adnate, irregularly lobate. Lobes radiating, contiguous to imbricate, undulate to slightly concave, 2.5–5.0 mm wide; apices rounded, often slightly ascending. Upper surface grey to blue-grey, ±distinctly pruinose; pruina punctiform towards the lobe apices; pseudocyphellae, isidia and dactyls absent. Soralia marginal (becoming linear and ±spreading) and laminal (orbicular); soredia granular. Medulla white. Lower surface pale grey to pale brown, distinctly greyish blue at the margins; rhizines ±dense, concolorous, furcate. Apothecia not seen in Australian material; reported to be very rare, physciaeformis-type, 0.5–1.5 mm wide; disc epruinose. Internal stipe distinct, white, K–, P–. Ascospores 16–20 × 5–9 μm (Moberg, 1980). Pycnidia not seen. CHEMISTRY: Cortex K+ purple (visible under microscope), C–, KC–, P–, UV–; medulla K–, C–, KC–, P–; containing unknown pigment in cortex (minor or trace). |
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| Rare on rocks in south-eastern Tas. Also in Arizona (U.S.A.), Peru, East Africa and Arabia. | ||
| Elix (2009l) | ||
| Checklist Index |
| Introduction | A–D | E–O | P–R | S–Z | Oceanic Islands | References |
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