Pseudosperma, Matheny & Esteve-Rav

Naseer, Arooj, Jabeen, Sana, Ashfaq, Ammara, Akbar, Mahrukh, Hussain, Syed Iftikhar & Khalid, Abdul Nasir, 2023, Pseudosperma quercinum sp. nov. (Inocybaceae) from the Himalayan forests of Pakistan, Phytotaxa 622 (4), pp. 260-270 : 267-268

Key to the Pseudosperma species found in Pakistan

1. Hyphae with clamp connections.........................................................................................................................................................2

1. Hyphae without clamp connections....................................................................................................................................................3

2. Basidiospores elongate to cylindric, sub-reniform................................................................................................... P. albobrunneum

2. Basidiospores ellipsoidal ....................................................................................................................................................................4

3. Stipe narrower towards the base.................................................................................................................................. P. pakistanense

3. Stipe narrower towards the apex ............................................................................................................................... P. flavorimosum

4. Basidiospores> 13 µm in length...............................................................................................................................................................5

4. Basidiospores <13 µm in length...............................................................................................................................................................6

5. Umbo dark brown......................................................................................................................................................... P. pinophyllum

5. Umbo prominent brown .................................................................................................................................................... P. mimicum

6. Pileus brownish orange to fulvous ................................................................................................................................ P. triaciculare

6. Pileus white .................................................................................................................................................................. P. himalayense