Arcyria Species

Agra, Leandro A. N. N., Cavalcanti, Laise H. & Dianese, José C., 2018, A new species of Arcyria from the Brazilian Cerrado, Phytotaxa 344 (3), pp. 283-286 : 285

Key to yellow Arcyria Species

1. Spores smooth .............................................................................................................................................. Arcyria pseudodenudata

- Spores ornamented .............................................................................................................................................................................2

2. Capillitium faintly attached to calyculus............................................................................................................................................3

- Capillitium firmly attached to calyculus ............................................................................................................................................6

3. Sporotheca expanding to 12–15 mm long after rupture of the peridium ...........................................................................................4

- Sporotheca up to 3 mm after peridium rupture ..................................................................................................................................5

4. Calyculus funnel-shaped ....................................................................................................................................... Arcyria fasciculata

- Calyculus smaller and flat ......................................................................................................................................... Arcyria obvelata

5. Capillitium with bead-like expansions ................................................................................................................... Arcyria annulifera

- Capillitium without expansions.............................................................................................................................. Arcyria flavescens

6. Calyculus up to 50 % of sporotheca size............................................................................................................................................7

- Calyculus deep, more than 50 % of sporotheca, with an irregular border ............................................................. Arcyria versicolor

7. Spore ornamentation evenly distributed, sowing large wart group ....................................................................................................8

- Spore ornamentation irregularly distributed, without large wart group ................................................................. Arcyria afroalpina

8. Sporotheca expanding at 4 mm or more after peridium disrupt.........................................................................................................9

- Sporotheca smaller, up to 4mm after peridium disrupt ....................................................................................................................11

9. Capillitium without coils .......................................................................................................................................... Arcyria virescens

- Capillitium with coils .......................................................................................................................................................................10

10. Capillitium ornamented by rings, half-rings, spines and cogs ................................................................................ Arcyria monticola

- Capitillitium ornamented by spiral expansions ...................................................................................................... Arcyria imperialis

11. Calyculus flat....................................................................................................................................................................................12

- Calyculus about 50 % of sporotheca ................................................................................................................. Arcyria aureoglobosa

12. Sporotheca orange or pale ochraceous, globose to subglobose, or ovate.........................................................................................13

- Sporotheca yellow, cylindrical to ovoid .............................................................................................................. Arcyria cerradensis

13. Capillitium ornamented by large rings and half-rings.............................................................................................. Arcyria annulata

- Capillitium ornamented by spines, cogs and warts .............................................................................................. Arcyria pomiformis