1. Macromtrium longipapillosum sp. nov. (Bryophyta, Orthotrichaceae) from Japan, with comments on M. comatum.
- Author
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Li, Dan Dan, Yu, Jing, Cao, Tong, and Guo, Shui Liang
- Subjects
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ORTHOTRICHACEAE , *PLANT anatomy , *PLANT classification , *PLANT morphology , *PHYTOGEOGRAPHY - Abstract
The new species Macromtrium longipapillosum D. D. Li, J. Yu, T. Cao & S. L. Guo from Japan is described and illustrated by line drawings and photographs. The new species can be distinguished from all congeners by the combination of the following features: 1) lanceolate to oblong-lanceolate leaves with obtuse, acute to broadly acuminate apices; 2) upper and median laminal cells with thin and inflated walls, with a single, large, occasionally forked papilla, 7-14 μm, occasionally up to 18 μm, 3) basal cells near costae forming a 'cancellina region', 4) inner perichaetial leaves ovate lanceolate, abruptly narrowed to a long acuminate upper part; 5) short and left-twisted seta; and 6) obloid capsules with well-developed exostome teeth. We also revise the circumscription of Macromitrium comatum Mitt. and discuss the relationships of M. comatum with M. longipapillosum and other relevant species. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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