Scytinopogon species, 2022

Lin, Wan-Rou, Wang, Pi-Han & Hsieh, Sung-Yuan, 2022, Scytinopogon cryptomerioides (Hydnodontaceae), a new species from Taiwan, Phytotaxa 552 (1), pp. 73-83 : 81

Key to Scytinopogon species (update from Furtado et al. 2021)

1. Hymenophore becoming more or less minutely papillate or hydnoid .................................................................................. S. scaber

1. Hymenophore smooth ........................................................................................................................................................................2

2. Basidiomes light brown to reddish brown when fresh .......................................................................................................................3

2. Basidiomes pure white to pale yellow when fresh ............................................................................................................................ 4

3. Basidiomes slender with flattened branches, context dry; context hyphae inflated to 6.0−23 µm diam ........................... S. robustus

3. Basidiomes robust with cylindric to flattened and narrowly spathulate branches, context viscid; context hyphae 3.5–8 µm diam ... ............................................................................................................................................................................................. S. foetidus

4. Basidiomes subfragile, reddish brown when dry; basal mycelium absent........................................................................................ 5

4. Basidiomes more robust, pale yellow when dry; basal mycelium present.........................................................................................6

5. Basidiospores subglobose; cystidial hairs on stipitipellis ...................................................................................... S. caulocystidiatus

5. Basidiospores ellipsoid; no cystidial hairs on stipitipellis................................................................................................ S. dealbatus

6. Basal mycelium abundant and very compact crystals present, insoluble in KOH; basidiospores nodulose, finely verrucose............ ......................................................................................................................................................................................... S. pallescens

6. Basal mycelium scant and loosely attached, crystals absent; basidiospores truly echinulate........................................................... 7

7. 1−2-spored or 4-spored basidium................................................................................................................................... S. chartaceus

7. 4-spored basidium .................................................................................................................................................. S. cryptomerioides