Stropharia

Tian, Enjing, Gao, Chonghua, Xie, Xiaomei & Zheng, Yuan, 2021, Stropharia lignicola (Strophariaceae, Agaricales), a new species with acanthocytes in the hymenium from China, Phytotaxa 505 (3), pp. 286-296 : 294

Key to the species of Stropharia known from China

1. Stipe viscid to glutinous; on dung ......................................................................................................................................................2

- Stipe dry to slightly viscid when wet; on soil or wood ......................................................................................................................3

2. Basidiospores with a central germ pore...................................................................... S. semiglobata ( Protostropharia semiglobata )

- Basidiospores with an eccentric germ pore........................................................................ S. dorsipora ( Protostropharia dorsipora )

3. Pileus slightly viscid when wet; annulus grooved on upper surface ..................................................................................................4

- Pileus viscid to glutinous; annulus smooth on both sides ..................................................................................................................8

4. Basidiospores subhexagonal in side view ..........................................................................................................................................5

- Basidiospores non-subhexagonal in side view...................................................................................................................................7

5. Pileus dark red to reddish brown ............................................................................................................................ S. rugosoannulata

- Pileus pale yellow to yellowish white ................................................................................................................................................6

6. Cheilocystidia as chrysocystidia; on enriched soil..................................................................................... S. rugosoannulata f. lutea

- Cheilocystidia as leptocystidia, rarely chrysocystidia; on saline-alkali or barren soil..................................................... S. halophila

7. Stipe short and thick; basidiospores with a minute or inconspicuous germ pore.............................................................. S. coronilla

- Stipe slim; basidiospores with a conspicuous germ pore ............................................................................................. S. yunnanensis

8. Hymenial acanthocytes present ......................................................................................................................................... S. lignicola

- Hymenial acanthocytes absent ...........................................................................................................................................................9

9. Pileus without green tone .................................................................................................................................................................10

- Pielus with green tone ......................................................................................................................................................................12

10. Pileus brown or pale .........................................................................................................................................................................11

- Plileus dark brown or orange-yellow ...............................................................................................................................................15

11. Basidiospores without a germ pore, black brown in KOH...................................................................................... S. subsquamulosa

- Basidiospores with a germ pore, slightly dark brown in KOH ....................................................................................... S. albonitens

12. Cheilocystidia as leptocystidia .........................................................................................................................................................13

- Cheilocystidia as chrysocystidia................................................................................................................................ S. chrysocystidia

13. Cheilocystidia clavate with a dull to capitate apex ..........................................................................................................................14

- Cheilocystidia flexuously cylindrical with a branched apex................................................................ S. aeruginosa var. earthworm

14. Pileus fading brown or clay color in age ................................................................................................... S. aeruginosa f. brunneola

- Pileus grayish green with yellowish margin in age ........................................................................................................ S. aeruginosa

15. Basidiospores longer (>10µm long)................................................................................................................................. S. squamosa

- Basidiospores shorter (<10μm long) ...................................................................................................................................... S. earlei