Diderma Persoon 1794
Creators: name: Zhao, Hui-Nan
name: Rao, Gu
name: Yang, Xin-Ya
name: Li, Xiao
name: Yu, Hai-Long
name: Zhang, Bo
name: Li, Yu
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Protozoa
Mycetozoa
Myxomycetes
Physarales
Didymiaceae
Diderma

description: Key to 19 species of Diderma in China
1. The outer peridium calcareous ...........................................................................................................................................................2
The outer peridium cartilaginous......................................................................................................................................................17
2. Peridium single layer ............................................................................................................................................... D. chondriderma
Peridium double-layered ...................................................................................................................................................................3
3. Sporocarps or plasmodiocarps, white, cream, light ochre, light purple, pink, pink-browns..............................................................4
Sporocarps pearl grey....................................................................................................................................................... D. cinereum
4. Sporocarps stalked............................................................................................................................................................................16
Sporocarps or plasmodiocarps, sessile ...............................................................................................................................................5
5. Columella flat-pulvinate or spherical, hemispherical.......................................................................................................................10
Columella either lacking or thickened orange-brown base ..............................................................................................................6
6. Columella lacking...............................................................................................................................................................................7
Columella thickened orange-brown base ...........................................................................................................................................9
7. Capillitium with warty spines.............................................................................................................................................................8
Capillitium without warty spines...................................................................................................................................... D. saudersii
8. Capillitium with membrane expanders................................................................................................................. D. verrucocapillitia
Capillitium without membrane expanders .................................................................................................................... D. deplanatum
9. Spores with warts ............................................................................................................................................................... D. effusum
Spores smooth ................................................................................................................................................................. D. testaceum
10. Columella flat-pulvinate..................................................................................................................................................... D. alpinum
Columella spherical, hemispherical..................................................................................................................................................11
11. Columella ochre to dark orange .......................................................................................................................................... D. niveum
Columella white................................................................................................................................................................................12
12. Light coloured spores, spores <10μm ...................................................................................................................... D. spumarioides
Dark spores, spores> 10μm .............................................................................................................................................................13
13. Spores spherical ................................................................................................................................................................................ 14
Spores subglobose, slightly polygonal .......................................................................................................................... D. cingulatum
14. Outer peridium without cracked.......................................................................................................................................................15
Outer peridium with cracked .................................................................................................................................... D. liaoningensis
15. Spores with large spines ............................................................................................................................................... D. crustaceum
Spores without large spines ............................................................................................................................................. D. globosum
16. Sporangium spherical or subspherical.................................................................................................................. D. hemisphaericum
Sporangium disciform .................................................................................................................................................. D. cor-rubrum
17. Peridium double-layered ..................................................................................................................................................................18
Peridium triple-layered................................................................................................................................................... D. asteroides
18. Columella white, capillitium without expansions ............................................................................................................ D. radiatum
Columella brownish, capillitium with expansions .......................................................................................................... D. floriforme
description: Published as part of Zhao, Hui-Nan, Rao, Gu, Yang, Xin-Ya, Li, Xiao, Yu, Hai-Long, Zhang, Bo & Li, Yu, 2022, Two new species of Diderma (Physarales, Didymiaceae) from northern China, pp. 61-73 in Phytotaxa 572 (1) on page 70, DOI: 10.11646/phytotaxa.572.1.4, http://zenodo.org/record/7305710