Ptychostomum, Hornschuch, 1824
publication ID |
https://doi.org/ 10.11646/phytotaxa.437.2.2 |
DOI |
https://doi.org/10.5281/zenodo.4780347 |
persistent identifier |
https://treatment.plazi.org/id/03EC452C-FFFB-FFE5-FF27-6E9AFA3E995B |
treatment provided by |
Felipe |
scientific name |
Ptychostomum |
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Subgenus Ptychostomum
1. Plants often pink to red, rarely green; spores 18–24 µm; capsule elongate-clavate, ± straight, peristome well-developed; sexuality dioicous................................................................................................................................................................................. P. pallens
- Plants green, yellow-green to brown; spores 12–35 µm, capsule turbinate to clavate, straight or rarely curved, peristome welldeveloped to strongly reduced; sexuality dioicous, autoicous or synoicous ......................................................................................2
2. Autoicous; plants green; leaf with distinct limbidium; spores> 30 µm, capsule elongate-clavate, somewhat curved; peristome reduced, cilia absent ........................................................................................................................................................... P. cernuum
- Dioicous or synoicous; plants green to yellow-green or brown; leaf limbidium present or absent; spores <30 µm; capsule turbinate to short-clavate, typically not curved, peristome well-developed to strongly reduced ......................................................................3
3. Leaves strongly recurved when wet, with narrow decurrent base; basal most proximal laminal cells somewhat inflated, distinct from cells above; capsule unknown ....................................................................................................................................... P. nivale
- Leaves erect but not recurved when wet, base broader, not decurrent; proximal laminal cells not inflated or distinct from cells above; capsules often present .............................................................................................................................................................4
4. Leaf margins plane; sexuality dioicous; spores 12–16 µm, capsule turbinate, cilia present and well-developed ......... P. turbinatum
- Leaf margin recurved proximally; sexuality synoicous; spores 22–26 µm, capsule clavate, cilia absent ................... P. mucronatum
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