Lachnum berggrenii Spooner 1987
Details
Biostatus
Nomenclature
Classification
Associations
Descriptions
Lachnum berggrenii Spooner 1987
Lachnum berggrenii Spooner 1987
DERIVATION: Named in honour of Sven Berggren, collector of the type material.
This collection by Berggren is partially annotated by Cooke and has been previously determined as Dasyscypha nivea, from which it is clearly distinct in the larger spores and completely granulate hairs. Apothecia occur on fragments of undetermined bark and are, unfortunately, in a comparatively poor state of preservation. Dried apothecia are frequently a unicolorous orange-brown, and the hairs are difficult to observe. The structure of the excipular tissue is also difficult to interpret, the hyphae now being collapsed and compacted, and further collections are required to confirm or amplify the description given above. The ectal cells are prismatic and more or less thin-walled and the structure appears to be typical of the genus. Fortunately, the apothecia are fully mature and yield abundant spores, and the species should prove readily recognizable. It is distinguished by the fusoid spores, narrow paraphyses and hairs bearing abundant particles of yellowish-brown, resinous matter.
Lachnum berggrenii is perhaps related to L. lachnoderma, but has shorter and broader, non-septate spores and narrower paraphyses. The spores are remarkably similar to those, of L. filiceum, but that is a distinctive species occurring exclusively on ferns and having shorter, unencrusted hairs and lanceolate paraphyses.