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Species Information
Summary:
Not available
Fruiting body: up to 0.7cm tall, consisting of sterile stem and fertile head, slenderly clavate to almost cylindric, cartilaginous, gelatinous, when dry corneous [horny] and hard; head 1/3-1/2 total length of fruitbody, up to 0.08cm wide, white to somewhat translucent, smooth, dull, (Breitenbach), up to 3cm high, slender, one per sclerotium; head 0.15-0.6(1)cm x 0.02-0.04cm, linear subulate [awl-shaped] then subclavate and blunt, waxy, wholly fertile; white then pallid yellowish, opaque, (Corner)
Stem: up to 0.04cm wide, cylindric, colored as head, finely pubescent; arising from irregularly rounded to lens-shaped sclerotium (on top of substrate) that is 0.1-0.2cm long, brown to brown-black, gelatinized within, (Breitenbach), 0.5-2.5cm x 0.01-0.03cm, thread-like, narrowing slightly upward (0.09-0.2cm at top), very variable in length; pellucid white, sometimes brownish at base; very finely or sparsely puberulous [downy] or appearing bald; sclerotium erumpent from substrate, 0.05-0.5cm wide, very variable in size, subglobose [almost spherical], becoming flattened or concave on one side; pale ochraceous then brownish and finally blackish, smooth, (Corner)
Microscopic: spores 8.5-11 x 3.5-4 microns, cylindric to slightly allantoid, smooth, inamyloid, colorless; basidia 4-spored, 25-30 x 5-6.5 microns, clavate, with basal clamp connection; caulocystidia up to about 80 microns long, with thickened base; hyphal system monomitic: in the subhymenium 1-2.5 microns wide, indistinct and strongly gelatinized, in the pith 3-5.5 microns wide and septa with clamp connections, in the cortex of stem strongly agglutinated, (Breitenbach), spores 6-9.5 x 2-3.5(4) microns, (but with other authors varying to 5-9.5 x 2-4.5 microns), cylindric, smooth, white, without droplets; basidia 4-spored (2-spored according to Bourdot and Galzin), 20-30 x 5-7 microns, sterigmata 4-5 microns long; cystidia none; caulocystidia very scattered (?very reduced or absent in some), up to 75 x 4-8 microns at base, conic, slightly thick-walled in proximal part, tapered to an acute thin-walled apex; subhymenium about 20 microns thick, of cells 6-12 x 2.5-4 microns wide and connected to the longitudinal hyphae by a cortex 20-30 microns wide, composed of similar but larger cells 15-25 x 6-12 microns; deeper hyphae 5-20 microns wide, the longitudinal hyphae with long fusiform cells (up to 500 microns long), with or without clamp connections, shorter-celled and more inflated at the base of the stem (cells 25-200 x 10-30 microns), with slightly and rather softly mucilaginous walls, the narrow hyphae (3-9 microns wide) at the surface of the stem firmly agglutinated and slightly thick-walled (at the apex of the stem generally thin-walled and not agglutinated, and with scattered sterile basidia), a few narrow hyphae 3-5 microns wide, with resinous-oleaginous contents; cuticle of sclerotium 5-8 microns thick, yellow brown, cortex of sclerotium 40-60 microns thick, composed of many agglutinated hyphae 3-8 microns wide, not in distinct layers, medulla white, composed of free, loosely interwoven hyphae, mostly 5-9 microns wide, thick-walled (walls 1-2 microns) and densely incrusted with small colorless crystals 1-3 x 0.5-2 microns, a few hyphae 3-5 microns wide and thin-walled, in surface view with irregular oblong cells, the lumina 12-20 x 4-8 microns, separated by rather wavy brown walls 2-3 microns thick, (Corner)
Habitat / Range
on dead herbaceous stems and leaves, and on fallen leaves and small twigs of trees, (Corner), growing in rows on dead petioles and stems of Cicerbita alpina (blue sow-thistle), according to Berthier also on Petasites albus (white butterbur), Gentian lutea (great yellow gentian), and Chaerophyllum (chervil), (Breitenbach)
Similar Species
Typhula erythropus is close, but its stem and sclerotium are red-brown, (Corner).
