Nephromopsis endocrocea Asahina
Nomenclatural data
J. Jap. Bot. 11: 24, 1935.
Type: Japan, insula Nippon (Honshu), Nasuzan, Faurie, 30.07.1897, no.339 (KY, n. v.). Synonyms: Cetraria  endocrocea (Asahina) M. Satô in Nakai & Honda, Nov. Fl. Jap. 5: 37, 1939.
Morphology
Thallus foliose, up to 15 cm in diameter, with prolonged ascending lobes up to 8 mm wide; upper surface greenish or yellowish grey, smooth; medulla dark yellow or orange; lower surface light brown or dark brown to almost black, regularly reticulated; pseudocyphellae in the form of minute white dots, mainly developed marginally on the lower surface itself or on ridges. Rhizines numerous to sparse, slender. Pycnidia marginal and laminal, located on the black emergent projections, sometimes very numerous. Pycnoconidia bifusiform, 5 x 1,5 µm. Apothecia marginal on the lower side of the thallus, rounded or reniform, up to 12 mm in diameter, disc brown, faced upwards. Exciple three-layered. Asci 45 x 12 µm, axial body extremely small (0,5 µm), tholus with an amyloid ring structure, ascospores oblong, 9-10 x 4-5 µm.
Chemistry
Usnic acid in the cortex; endocrocin and various fatty acids (e.g. lichesterinic and protolichesterinic acids) in the medulla. Medulla K+ lilac.
Remarks
Morphologically quite similar to N. ornata except for the brighter colour of medulla and somewhat more delicate general habit.
Ecology and distribution
Japan, Russian Far East; China (Wei, 1991); corticolous on coniferous (Abies, Larix, Tsuga) or deciduous (Betula) trees at lower and medium altitudes (up to 2500 m).
Literature
Randlane, T. & Saag, A. 1992. | Randlane, T. & Saag, A. 1998. |Randlane, T. & Saag, A. 2004. | Randlane, T., Saag, A. & Obermayer, W. 2001. | Randlane, T., Saag, A., Thell, A. & Kärnefelt, I. 1994. | Randlane, T., Thell, A., & Saag, A. 1995. | Thell, A., Randlane, T., Saag, A. & Kärnefelt, I. 2005.
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