• Macro and habitat suggest something around Lachnum carneolum.
• Using Baral's key, subkey 3: No crystals, VBs, croziers, hair apices uninflated.
• Of these species on grasses, L. tenuipilosum seems to be the best fit.
• Some characters fit better with L. 'longipilosum' in the key, but perhaps these have been combined now.

Habitat: Apparently widespread (micro only on one collection) on dead stems and sheaths of Ammophila arenariain, standing or fallen, both on the inside and outside of the sheaths, in damp places under cover of living plants, on sand dunes, both sides (sea and land), on a beach, river mouth nearby, West Beach, Angmering, south England, 26/11/24.

Apothecia: Diameter < 1 mm, gregarious to 2-caespitose, apparently superficial, yellowish to pinkish disc, sometimes more vinaceous-purplish - possibly when overmature or injured, some with a noticeable stipe, short white hairs.

Macro: Cupulate to discoid, shallow, narrow-cylindrical stipe, often short to substipitate, short white hairs on receptacle and margin, agglutinated in groups, protruding above the disc until maturity, disc initially pale yellow, becoming more buff to reddish-brown, eventually more convex, faintly pruinose appearance (paraphyses), no sign of a subiculum or disturbance to the substrate.

Asci: Turgid ~45-60 x 5.5-6 um, croziers, rings mostly bb, occasionally more dirty and once rb, Calycina-type?, 2-4-seriate, thickening appears noticeably shallow when flaccid.

Spores: Cylindrical-allantoid or longer and more fusiform, ~2-6 tiny shadowy LBs towards each pole, OCI ~0.5, ends +/- tapering to acute-rounded, approximately homopolar but sometimes base more elongated, inequilateral to very slightly curved in profile view, flexible, becoming narrower and appearing empty when dead.

Free living spores in water:
(9.0) 9.8-14.2 (16.5) × 1.6-2.1 (2.3) µm, Q = (4.9) 5.2 - 7.9 (8.3), N = 26, mean = 11.7 × 1.9 µm, Q mean = 6.3.

Paraphyses: Broadly lanceolate, width ~5-6.5 um, tapering to blunt apex, more pointed when dead, protruding considerably above mature asci ~20-25 um, filled with many tiny VBs, medium density, 1-2 septate, apical cell ~2-4x longer, possibly with an SCB – more noticeable in IKI.

Hairs: 60-80+ um long, cylindrical, apex rounded, aseptate, apically with tiny amorphous warts, with VBs similar to paraphyses, sometimes no VBs at apex.

Medullary: Text. porrecta.

Ectal: Text. prismatica-angularis, hyaline, more angularis towards the base?

Exudate: Peachy-yellowish, around the hair apices and in the excipulum.