Pycnothelia mascarena (Nyl.) Nyl.

Pino-Bodas, Raquel, Ahti, Teuvo & Stenroos, Soili, 2020, Taxonomic notes on Pycnothelia Dufour and Gymnoderma Nyl. (Cladoniaceae) in Madagascan Region, Cryptogamie, Mycologie 20 (5), pp. 109-118 : 112-114

Pycnothelia mascarena (Nyl.) Nyl.

( Fig. 2A )

In Leighton, Annals and Magazine of Natural History, ser. 3, 18:

405 (1866).

Cladonia mascarena Nyl., Annales des Sciences Naturelles; Botanique 4 (11): 250 (1859). — Cladonia papillaria var. mascarena Nyl., Mémoires de la Société Imperiale des Sciences Naturelles de Cherbourg 5: 95 (1858 [1857]) nom. nud. — Cladonia papillaria subsp. mascarena (Nyl.) Nyl. , Synopsis Methodica Lichenum 1 (2): 189 (1860).

MYCOBANK. — MB477440.

LECTOTYPE. — Réunion (Île Bourbon), Salazie, 1840, P. Lepervanche-Mezières 116 (H-NYL no. 38692 = H9504381; isolecto-, G[G00047551]; PC-Hue; PC-Thuret [ Ahti 1993]).

Primary thallus poorly known (absent from most specimens), perhaps slightly granulose. Podetia 20-40 mm tall, 0.5-1 mm thick, dark to pale brown, fragile (wall very thin) densely packed together, slender, not or somewhat swollen, hollow, usually characterized by short, bulbous, lateral branchlets towards the tips, which are acute. Ascomata and conidiomata unknown.

CHEMISTRY. — Atranorin and fatty acids of apparently the lichesterinic acid group (TLC).

DISTRIBUTION. — Only known from Réunion.

ADDITIONAL MATERIAL EXAMINED. — Réunion, type locality, 1840, P. Lepervanche-Mezières 115 (H-NYL 38692 p.p. = H9504381 p.p., PC-Thuret); “Secus semitam inter locos dictos Côteau-Maigre et Entre-Deux, ad terram humosam et truncos putridos, inter Philippias ”, 2200 m, 1956, H. des Abbayes in des Abbayes, Lich. Madag. Borb. Sel. Exs. No. 21 (REN, TUR, UPS); Forêt de Bébour, 2008, A. M. Brand 58836 (H, Herb. Brand), 58836a (H); St. Paul, 2008, A. M. Brand 59533 (Herb. Brand).

NOTES

The later combinations of the name Cladonia mascarena have been overlooked by nomenclatural sources such as the Index Fungorum and MycoBank.

Figures

FIG. 2. — A, Pycnothelia mascarena (Nyl.) Nyl., Réunion, Lepervanche-Méziéres 116 (PC-Thuret); B, Pycnothelia caliginosa D.J.Galloway & P.James, New Zealand, Galloway s.n. (isotype, H). Photo: Sanna Laine; C, Pycnothelia papillaria Dufour, Canada, New Brunswick, Ahti 74425 & Clayden (H). Photo: Sanna Laine; D; Pycnothelia papillaria, Canada, Ontario, Burgaz s.n. (MACB); E, Gymnoderma coccocarpum Nyl., Taiwan, Stenroos 3462 (H); F, Gymnoderma coccocarpum (Synonym of Heterodea madagascarea), Réunion, v.d. Boom 40494 (H). Scale bars: 1 cm.