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Miltidea Stirt. (1898)

Data Set Maintenance: Data set standard item. Data set author(s): Rambold G. Data set reviewer(s): Lumbsch H. T. (98-03-19); revised; to be published after submission.

Nomenclature: Current taxonomic status: accepted or basionymous. Taxonomic rank: genus. Number of known taxa within this rank: 1. Miltidea. Miltideaceae Hafellner (1984); Agyriineae; Lecanorales.

Type Information: Type: Miltidea ceroplasta (Bab.) Galloway & Hafellner.

Taxonomic Literature: Lumbsch H.T., J. Hattori Bot. Lab. 83: 1-73 (1997); Galloway D.J., Flora of New Zealand lichens: i-lxxiii, 1-662 [226], Wellington (1985) - sub Lecidea ceroplasta; Hafellner H., Beih. Nova Hedwigia 79: 241-371 [308] (1984).

Biogeography: Checklist records: New Zealand.

Ecology: Biotroph; lichenized; corticolous.

Lichen Photobionts: Primary photobiont present; chlorococcal. Secondary photobiont absent.

Thallus: Crustose, not subdivided parts, rimose or areolate (primarily areolate). Upper Surface: Brown, green, grey, brownish yellow, or olive; special structures absent. Lower Surface: Attached by the whole lower surface; special structures absent.

Reproduction Strategy: Only known as sterile, asexually reproducing form or with sexual (and possible asexual) stages. Ascocarps: Apothecioid, orbicular, forming all across the thallus surface, soon sessile. Margin: Indistinct to distinct; external filaments absent. Exciple: White. Periphyses: Absent. Epithecium: Apical cells brownish yellow, orange, or bluish red (= reddish blue, incl. violet, purple). Hymenium: Oil inspersed, iodine reaction: Lugol’s positive, not hemiamyloid. Interascal Hyphae: Present, scarcely branched, not or scarcely anastomosed. Hypothecium: White.

Asci: Tholus thickened, not amyloid or amyloid, entirely amyloid throughout; dehiscence lecanoralean; exoascus euamyloid, not hemiamyloid.

Ascospores: c. 8 per ascus, ellipsoid, 11-25 µm long, 5-11 µm wide, obtuse; septa absent; wall thick, distinctly differentiated into primary and secondary wall, not thickened at the septum, hyaline, in Lugol's Solution negative, wall not ornamented.

Conidiomata: Absent resp. not observed or present.

Secondary Metabolites: Present, of the following substance class(es): (anthra-)quinones.

(report generated 04.Okt.2007)


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