Macromitrium japonicum Dozy & Molk.

Li, Dandan, Li, Yuehan, Ren, Yan, Liu, Shutong, Yu, Jing & Guo, Shuiliang, 2024, Three new synonyms of Macromitrium japonicum Dozy & Molk. (Bryophyta, Orthotrichaceae) based on morphological and molecular evidence, Cryptogamie, Bryologie 20 (3), pp. 23-36 : 26

Macromitrium japonicum Dozy & Molk.

( Figs 3-6 )

Annales des Sciences naturelles, Botanique, série 3, 2 (5): 16 ( Dozy & Molkenboer 1844). — Type protologue: Japonia without exact locality and collector. — Type citation: Japan, Siebold (L910, 138- 1128), lectotype!, designed by Noguchi (1967).

Macromitrium japonicum var. makinoi (Broth.) Nog., Illustrated Moss Flora of Japan 3: 606 ( Noguchi 1989), syn. nov. — Dasymitrium makinoi Broth. , Hedwigia 38: 215 ( Brotherus 1899). — Type protologue: [ Japan] Shikoku: Setton, ad corticem arboris (Makino). — Type citation: Japonia, Setton, leg. T. Makino, 1889 (holotype, H-BR2572002!).

Macromitrium dickasonii Bartr. , Farlowia 1: 178 ( Bartram 1943), syn. nov. — Type protologue: Mogok, Apr. 1934, no. 102. — Type citation: [ Myanmar] Mogok, Apr. 1934, F. G. Dickason 102 (holotype, FH00213603!).

Macromitrium polygonostomum Dixon & P. de la Varde, Archives de Botanique , Bulletin mensuel 1 (8-9): 181 (Dixon & P. de la Varde 1927), syn. nov. — Type protologue: Hab.: Sirumalai, 4000 ft. alt., avril 1924, sterile (no 439), ibid., crête rocailleuse surplombant sentier d’Emmakkalapuram, mars 1927 (NOB 844A, 844B et 845). — Type citation: India, Sirumalai, mars 1927, leg. G. Foreau 844B (isosyntypes, US 00070273!, H-BR2572016!; syntypes, PC, not seen).

DISTRIBUTION. — China ( Guo et al. 2007; Yu et al. 2013), India ( Li et al. 2020), Japan ( Noguchi 1967, 1989), Laos (Guo pers. comm. 2013), Myanmar, Thailand ( Tixier 1971; Tan & Iwatsuki 1993), Sri Lanka ( O’Shea 2002), Korea ( Noguchi 1989) and Vietnam.

HABITAT. — On trunk of broad-leaf trees, occasionally on rocks; at 10-2000 m alt.

Figures

FIG. 3. — Macromitrium japonicum Dozy & Molk.: A-J, branch leaves; K, L, Q, S, upper cells of branch leaves; M-P, R, medial cells of branch leaves. A, K, from syntype of M. bathyodontum Cardot; B, R, from Noguchi 45186; C, S, from Noguchi 5436; D, Q, from Noguchi 22538; E, P, from Noguchi 49319; F, G, L, M, from lectotype of M. japonicum; H-J, N, O, from lectotype of M. insularum Sull. & Lesq. Figure modified from Noguchi 1989. Scale bars: A-J, 0.5 mm; K-S, 50 μm.

FIG. 4. — Macromitrium japonicum Dozy & Molk.: A-F, branch leaves;G, spore;H, capsule;I, basal leaf cells;J, exostome;K, upper cells of branch leaf;L, medial cells of branch leaf; M, calyptra; N, upper transverse section of branch leaf; O, medial transverse section of branch leaf. All from holotype of M. japonicum var. makinoi (Broth.) Nog. (H-BR2572002). Scale bars: A-F, H, M, 0.44 mm; G, I-L, N, O, 44 μm.

FIG. 5. — Macromitrium japonicum Dozy & Molk.: A-C, branch leaves; D-F, perichaetial leaves; G, stem leaf; H-K, apices of branch leaves; L, M, base of branch leaf; N-P, secondary stem leaves; Q, medial cells of branch leaf; R, lower cells of branch leaf; S, basal cells near margin of branch leaf; T, basal cells of branch leaf;U, V, upper transverse sections of branch leaves;W, vaginula;X, capsules;Y, calyptra;Z, upper cells of perichaetial leaf;AA, medial cells of perichaetial leaf; AB, lower cells of perichaetial leaf; AC, basal cells of perichaetial leaf; AD, AF, peristome; AE, spore; AG, upper cells of stem leaf; AH, medial cells of stem leaf; AI, lower cells of stem leaf; AJ, basal cells of stem leaf. All from holotype of M. dickasonii E.B.Bartram (FH00213603). Scale bars: A-P, W-Y, 1 mm; AF, 200 μm; AD, 100 μm; Q-V, Z-AC, AE, AG-AJ, 67 μm.

FIG. 6. — Macromitrium japonicum Dozy & Molk.:A-G, I-K, M, N, branch leaves;L, perichaetial leaves;H, O, capsules;P, Q, basal cells of branch leaves;R, medial cells of branch leaf; S, basal transverse section of branch leaf; T, upper transverse section of branch leaf; U, calyptra; V, basal cells near margin of branch leaf; W, peristome. All from syntype of M. polygonostomum Dixon & P. de la Varde (H-BR2572016). Scale bars: A-O, U, 0.44 mm; P-T, V, W, 44 μm.