Flora of New Zealand Series

≡Catillaria semecarpi Vain., Annls Acad. Sci. fenn. ser. A, 15: 110 (1921).

Description : Thallus 1.5–3 mm diam., dispersed, algiferous patches very small, 0.05–0.1 mm diam., irregular centrally, confluent, smooth, grey with a pale greenish or brownish tinge, subnitid, 10–20 μm thick. Apothecia sessile, slightly constricted at base, 0.1–0.2(–0.4) mm diam., disc pale pinkish or reddish to pale-brown, epruinose, plane. Ascospores 1-septate, oblong to ovoid, slightly constricted at septum, proximal cell slightly larger than distal cell, 10–16 × 4–5 μm.

N: South Auckland (Coromandel Peninsula). S: Canterbury (Peel Forest). On fern leaves, growing with Badimiella sérusiauxii, Byssoloma leucoblepharum and B. subundulatum (Sérusiaux 1986: 30). First collected in New Zealand by the late John Bartlett. Known also from Australia and Mexico ((McCarthy 2003c, 2006; Herrera-Campos et al. 2004).

Pantropical

Exsiccati : Vězda (1994b: No. 132).

Fellhanera semecarpi is an inconspicuous species with very small apothecia (Santesson 1952; Lücking 1977a). Well-developed specimens of F. semecarpi are externally close to Byssoloma pauciseptata, the distinction between these two taxa being discussed by Lücking (1997c: 161).