Multiclavula vernalis (Schwein.) R.H. Petersen

Am. Midl. Nat., 77: 216, 1967. Basionym: Clavaria vernalis Schwein. - Schr. naturf. Ges. Leipzig, 1: 112, 1822.
Synonyms: Clavulinopsis vernalis (Schwein.) Corner; Stichoclavaria vernalis (Schwein.) Paechn.
Distribution: N - Lomb (Gaggianese & al. 1999).
Description: Thallus crustose, episubstratic, forming a soft, gelatinous (when wet), green to grey-green, 0.4-1 mm thick film made of minute granules consisting of clumps of algal cells incompletely surrounded by hyphae. Basidiocarps not lichenized, ephemeral (summer and autumn), mostly simple (rarely with a few apical branches), 7-15(- 20) mm tall, 0.5-1.5 mm thick, geotropically oriented, clavate to spoon-shaped, cream-coloured to straw-orange in upper parts, usually with a small, cap-like white spot at apex, the hymenium extending over c. the upper two thirds. Basidia clavate, bearing a basal clamp, with 2-4, to 7 μm long, slightly incurved sterigmata. Basidiospores 1-celled, hyaline, ellipsoid to elongate-ovoid, smooth, thin-walled, aguttulate, 5-10(-12) x 1.5-3.5 μm, with a small eccentric apiculus, I-. Photobiont chlorococcoid. Spot tests: all negative. Chemistry: thallus without lichen substances.
Note: on humic to sandy, acid soil in humid situations; perhaps overlooked by lichenologists, but certainly very rare in Italy.
Growth form: Fruticose

Substrata: soil, terricolous mosses, and plant debris
Photobiont: green algae other than Trentepohlia
Reproductive strategy: mainly sexual

Commonnes-rarity: (info)

Alpine belt: absent
Subalpine belt: extremely rare
Oromediterranean belt: absent
Montane belt: extremely rare
Submediterranean belt: absent
Padanian area: absent
Humid submediterranean belt: absent
Humid mediterranean belt: absent
Dry mediterranean belt: absent

pH of the substrata:


Solar irradiation:








Altitudinal distribution:


Predictive model

Curtis Randall Björk – CC BY-SA 4.0
Washington State, Spokane County, Little Spokane River Natural Area Date: 2011-04-04 On soil of a tipup rootwad in open, dry Pseudotsuga-Pinus ponderosa forest