Velutarina rufo-olivacea (Alb. & Schwein. ex Pers.) Korf
no common name
Helotiaceae
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
no common name
Helotiaceae
Species account author: Ian Gibson.
Extracted from Matchmaker: Mushrooms of the Pacific Northwest.
Introduction to the Macrofungi
Photograph
Species Information
Summary:
Features include small, cup-shaped fruitbodies with a dark olive green upper surface, rusty brown powder on exterior, and growth on dead twigs and branches of deciduous trees and shrubs.
Microscopic:
spores 12-15 x 6-8 microns, elliptic, colorless or faintly colored, uniseriate; asci 8-spored, reaching a length of 110-120 microns and a width of 12-14 microns, subcylindric; paraphyses filiform [thread-like], rather strongly widened in upper part; hairs "poorly developed and more or less disjuncted", often each with a large spherical tip which gives the mealy appearance, (Seaver), spores 10-14 x 6-7 microns, elliptic with obtusely rounded ends, colorless at first becoming pale brown, containing 1 or 2 large oil droplets, uniseriate; asci 8-spored, up to 160 x 12 microns, cylindric-clavate, the broad pore turning blue with iodine; paraphyses 3 microns wide, widening to 5 microns wide at the greenish brown tip; external powder "formed of thick-walled, loose, irregularly lobed cells", (Dennis), spores 10-14 x 6-8 microns, asci 120-160 x 10-15 microns, with amyloid pore, (Hansen)
Notes:
Velutarina rufo-olivacea is found from NJ to OR, and also in Europe, (Seaver), including Denmark, Norway, and Sweden, (Hansen), and the United Kingdom (Dennis). There are collections from BC deposited at the Pacific Forestry Centre.
Habitat and Range
Habitat
single or several together in dense clusters on dead branches of various kinds: Quercus (oak), Betula (birch), Andromeda, Sassafras, and Rubus, (Seaver), single or in small clusters on dead twigs and branches, Acer (maple), Fagus (beech), Fraxinus (ash), Rosa (rose), Rubus, Ulex (gorse), December to May, (Dennis), single or in small clusters, on deciduous trees and shrubs e.g. Salix (willow), (Hansen)
Status Information
Synonyms
Synonyms and Alternate Names:
Cenangium rubi Baumler
Humaria rufo-olivacea Quel.
Lachnella rufo-olivacea W. Phillips
Phaeangium rubi Sacc. & P. Syd.
Schweinitzia rufo-olivacea Massee & Crossl.
Velutaria rufo-olivacea (Alb. & Schwein.) Fuckel