Tetracymbaliella comptonii (Pearson) Grolle

Thouvenot, Louis, 2023, A taxonomic revision of the Lophocoleaceae Vanden Berghen (Marchantiophyta) of New Caledonia, Cryptogamie, Bryologie 20 (1), pp. 1-60 : 54

Tetracymbaliella comptonii (Pearson) Grolle

Revue bryologique et lichénologique 32: 164 ( Grolle 1963). — Chiloscyphus comptonii Pearson , Journal of the Linnean Society, Botany 46: 23 ( Pearson 1922). — Heteroscyphus comptonii (Pearson) J.J.Engel & R.M.Schust. , Nova Hedwigia 39: 402 ( Engel & Schuster 1984 [1985]).

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Type: New Caledonia. Pearson 740, not seen .

Tetracymbaliella ratiana Grolle , Nova Hedwigia 3: 51-52 ( Grolle 1961). — Chiloscyphus grossitextus Steph. ex Paris , nom. inval.

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Type: New Caledonia. Pic des Sources , Le Rat s.n. (holo-, M [fide Grolle 1961]; iso-, REN [“ Chiloscyphus grossitextus , Nov. Caledon. Pic des Sources ”, VII.1909, Le Rat s.n., herb. E. G. Paris]!).

FURTHER SPECIMENS EXAMINED. — New Caledonia. South Province, Yaté, Wé Toa , on dead wood in wet forest in ultramafic massif, 500 m, 8.IX.2019, Thouvenot NC2857; Mt. Mou , VII.1909, Le Rat s.n. as “ Chiloscyphus cymbaliferus ” ( REN) ; Mt. Dzumac , “ ad arbores in silvat., 1000 m alt”, VII.1905, Le Rat s.n. ( REN).

DISTRIBUTION IN NEW CALEDONIA. — Scattered in South Province where it grows on dead wood in rain forest at medium elevations (collected from 500 to 1000 m).

TOTAL RANGE. — Endemic.

DESCRIPTION AND ILLUSTRATION

Grolle (1961) as Tetracymbaliella ratiana .

COMMENTS

This species is very distinctive by the conspicuous pouches on leaf and underleaf margins. This character is shared with Tetracymbaliella cymbalifera ( New Zealand) that might introduce some misidentification (see below). T. ratiana is distinguished from the latter by: 1) larger trigones almost as wide as the cell lumina; 2) pouches longer than wide; 3) dorsal leaf margins not connivent; and 4) leaf cells strongly mammillose.