Stemonitis

Bo, Zhang & Yu, Li, 2016, A new species, Stemonitis sichuanensis, and a newly recorded species, Stemonitis marjana (Myxogastria) from China, Phytotaxa 258 (2), pp. 195-199 : 197-198

Key to the genus Stemonitis

1 Spores reticulate ................................................................................................................................................................................ 2

1 Spores warted or spinulose.................................................................................................................................................................6

2 Larger sporocarps, almost exceeding a height of 3 mm .....................................................................................................................3

2 Smaller sporocarps, not exceeding a height of 3 mm .........................................................................................................................5

3 Sporocarps almost 6–20 mm total height ................................................................................................................................ S. fusca

3 Sporocarps almost 3–6 mm total height.............................................................................................................................................4

4 Larger spores, about 8–9 μm in diam............................................................................................................................ S. inconspicus

4 Smaller spores, not exceeding 7 μm in diam................................................................................................................. S. virginiensis

5 Capillitium regular branched, with many membranous expansions at the junction........................................................... S. marjana

5 Capillitium irregular branched, with few or no membranous expansions at the junction ................................................. S. foliicola

6 Spores united in clusters of 4–12 or more ............................................................................................................................ S. uvifera

6 Spores free..........................................................................................................................................................................................7

7 Most spores less than 6.5 μm in diam................................................................................................................................................8

7 Most spores more than 6.5 μm in diam..............................................................................................................................................9

8 Larger sporocarps, about 7–20 mm total height................................................................................................................... S. axifera

8 Smaller sporocarps, not exceeding 3mm total height......................................................................................................... S. farrensis

9 Surface net small-meshed, diameter usually less than 25 μm..........................................................................................................10

9 Surface net large-meshed, diameter usually more than 25 μm........................................................................................................15

10 Columella ending with expansions..................................................................................................................................................11

10 Columella ending without expansions..............................................................................................................................................13

11 Columella ending with membranous cup-like expansions............................................................................................. S. flavogenita

11 Columella ending with widened expansion at the apex...................................................................................................................12

12 Capillitium with prominent nodes, spores 9–11 μm in diam. ................................................................................ S. capillitionodosa

12 Capillitium with an ovoid to triangular expansion, spores 6–7 μm in diam ............................................................... S. sichuanensis 13 Larger sporocarps, about 7–13 mm height ........................................................................................................................ S. lignicola

13 Smaller sporocarps, not exceeding 7 mm height..............................................................................................................................14

14 Surface net fragile, on dead wood or bark............................................................................................................................ S. pallida

14 Surface net persistent, on grass or dead leaves................................................................................................................. S. herbarica

15 Larger sporocarps, more than 5 mm height......................................................................................................................................16

15 Smaller sporocarps, less than 5 mm height.....................................................................................................................................17

16 Stalk about 20%–25% of total height, with rhizoid-like veins at the base................................................................... S. rhizoideipes

16 Stalk about 25%–30% of total height, without rhioid-like veins at the base ................................................................... S. splendens

17 Spores bearing dark spinules................................................................................................................................................ S. laxifila

17 Spores bearing fine pale warts................................................................................................................................... S. mussooriensis