Macromitrium BRID. IN
Creators: name: Li, Dandan
name: Li, Yuehan
name: Ren, Yan
name: Liu, Shutong
name: Yu, Jing
name: Guo, Shuiliang
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Plantae
Bryophyta
Bryopsida
Orthotrichales
Orthotrichaceae
Macromitrium

description: KEY OF MACROMITRIUM BRID. IN CHINA AND JAPAN
1. Peristome absent ............................................................................................................................................. ...... M. formosae Cardot, M. gymnostomum Sull. & Lesq., M. holomitrioides Nog., M. ousiense Broth. & Paris, M. taiheizanense Nog., M. tuberculatum Dixon
— Peristome present ........................................................................................................................................ 2
2. Laminae of branch leaves irregular 1-3-stratose proliferation with pluripapillose cells ..................................... ......................................................................................................... M. nepalense (Hook. & Grev.) Schwägr.
— Laminae of branch leaves unistratose or partially bistratose in median and upper portions .......................... 3
3. Laminae of branch leaves partially bistratose in median and upper portions ................................................... .................................................................................... M. maolanense Ze Y. Zhang, D.D.Li, J.Yu & S.L.Guo
— Laminae of branch leaves unistratose ........................................................................................................... 4
4. All cells of branch leaves clear and smooth ..................................................................................................... .............................................................. M. microstomum (Hook. & Grev.) Schwägr., M. cuspidatum Hampe
— Cells of branch leaves papillose (mammillose or conic-bulging) to varying degrees ...................................... 5
5. Seta rather short, often 0.3-0.7 mm ............................................................. M. hainanense S.L.Guo & S.He
— Seta relatively longer, often longer than 2.0 mm .......................................................................................... 6
6. Upper cells of branch leaves with a single large linear central papilla up to 14-18 µm high ............................. ...................................................... M. longipapillosum D.D.Li, J.Yu, T.Cao & S.L.Guo, M. taiwanense Nog.
— Upper cells of branch leaves often pluri-papillose to varying degrees or conic bulging and mammillosum ... 7
7. Calyptrae smooth and naked .......................................................................................................................... M. blumei var. zollingeri (Mitt. ex Bosch & Sande Lac.) S.L.Guo, B.C.Tan & Virtanen, M. macrosporum Broth.
— Calyptrae hairy ............................................................................................................................................ 8
8. Median and upper laminal cells mammilate (conic-bulging with a blunt central projection) .......................... ............................................................................................. M. uraiense Nog., M. fortunatii Cardot & Thér.
— Median and upper laminal cells pluripapillose to varying degrees ................................................................ 9
9. Setae shorter than 2.0 mm, branch leaves with linear and smooth basal cells, sporophytes slightly exserted the perichaetial leaves ......................................................................................................... M. prolognatum Mitt.
— Setae often longer than 3.0 mm, branch leaves with papillose cells to varying degrees, sporophytes obviously exserted the perichaetial leaves ................................................................................................................... 10
10. Basal cells of branch leaves often papillose to varying degrees ........................... M. cavaleriei Cardot & Thér., M. ferriei Cardot & Thér., M. quercicola Brotherus, M. tosae Besch., M. turgidium Dixon
— Basal cells of branch leaves smooth, without papillae ................................................................................. 11
11. Apices of branch leaves spreading when moist, calyptrae with long and brown-yellowish hairs ....................... .......................................................................................................................................... M. comatum Mitt.
— Apices of branch leaves often adaxially incurved and inrolled when moist, caplyptrae with yellowish hairs ..... ......................................................................................................................... M. japonicum Dozy & Molk.
description: Published as part of 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, pp. 23-36 in Cryptogamie, Bryologie 20 (3) on page 33, DOI: 10.5252/cryptogamie-bryologie2024v45a3, http://zenodo.org/record/11394106