Trichothallus hawaiiensis
Trichothallus hawaiiensis F. Stevens, Bulletin of the Bernice P. Bishop Museum, Honolulu, Hawaii 19: 85 (1925).
Index Fungorum number: IF 177458; Facesoffungi number: FoF 11060, Fig. 1, 2
Description: see Hughes (1965, 1972).
The material we examined was dry and in poor condition. No morphological characters were observed. Ascospores 17 × 7 µm, 3-septate, median septum darker brown, swollen at supra-median cell, obovoid to clavate, ellipsoid or fusoid.
Material examined: The United States, Hawaii, Island of Hawaii, between Hilo and Kilauea, on Metrosideros polymorpha (Myrtaceae), 10 July 1921 (ILL00011898, paratype).
Fig. 1 Trichothallus hawaiiensis (ILL00011898, paratype). a–g Herbarium material. h Ascospore. Scale bars: c = 5000 μm, d = 1000 μm, e = 50 μm, f = 40 μm, g = 5 μm, h = 10 μm.
Fig. 2 Trichothallus hawaiiensis (re-drawn from Fig. 1 in Hughes 1972). Portion of thallus and phragmoconidia.
Importance and distribution
Trichothallus species are parasitic obtaining nutrients from living cytoplasm, hence causing disease (Kendrick 2011). Trichothallus comprises two species known on 16 plant families namely Apocynaceae, Araceae, Campanulaceae, Cibotiaceae, Cyperaceae, Dryopteridaceae, Goodeniaceae, Hydrangeaceae, Lamiaceae, Lauraceae, Myrtaceae, Pandanaceae, Rosaceae, Rubiaceae, Smilacaceae and Urticaceae. Trichothallus has been reported from the United States (Hawaii and New Zealand). Trichothallus is an interesting but poorly studied genus.
References
Hughes SJ. 1965 – New Zealand Fungi. New Zealand Journal of Botany 3, 320–332.
Kendrick B. 2011 – Fungi: Ecological Importance and Impact on Humans. In eLS, (Ed.).
Petrak F. 1950 – Über Loranthomyces v. Höhn. und einige andere Gattungen der Trichothyriaceen. Sydowia 4, 163–174.
Steven FL. 1925 – Hawaiian fungi. Bulletin of the Bernice Bishop Museum 19, 1–189.
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