Helotium magellanicum Dennis 1961
Details
Nomenclature
Dennis
Dennis
1961
305
replacement, replacement name
ICN
Helotium magellanicum Dennis 1961
species
Helotium magellanicum
Classification
Descriptions
Helotium magellanicum Dennis 1961
On rotten wood in forest, Colenso B396; under logs, Colenso B324.
Apothecia scattered, superficial, disc concave, 3 mm. diameter, drying Hay's Brown (Ridgway), receptacle cup-shaped with a well-developed cylindrical stalk, pruinose with short, free, hyphal tips, vertically ribbed and furrowed towards the margin, Deep Olive Buff. Flesh homogeneous, composed of compact hyphae, 4-5 µ wide, becoming parallel at a low angle to the surface in the outer layers. Asci clavate. long stalked, 115-120 x 10-12 µ, 8-spored, pore not blued by Melzer's reagent; ascospores biseriate, fusoid, 10-12.5 x 3-3.5 µ; paraphyses cylindrical, obtuse, 2 µ wide.
For this determination I am indebted to Mrs. Gamundi de Amos, who has kindly sent me part of a collection from Nahuel Huapi National Park, which she has compared with the type in Spegazzini's herbarium at La Plata. Massee gave the New Zealand material the apparently unpublished name Chlorosplenium flavovirens. In spite of the presence of a greenish pigment the structure of the apothecium seems to me that of an Helotium rather than of a Chlorosplenium. There is already a Helotium flavovirens (Pers.) Fr.
Taxonomic concepts
Helotium magellanicum Dennis 1961
Helotium magellanicum Dennis 1961
Global name resources
Collections
Notes
typification
On rotten wood in forest, [New Zealand] Colenso B396; under logs,
Metadata
1cb18ca5-36b9-11d5-9548-00d0592d548c
scientific name
Names_Fungi
7 November 2013