Fungalpedia – Note 228, Striadiporites (Fossil Fungi)


Striadiporites Varma & Rawat.

Citation when using this entry: Saxena RK & Hyde KD. 2024 (in prep) – Fungalpedia, Fossil Fungi. 

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Classification: Fossil Fungi, incertae sedis.

The monotypic fossil genus, Striadiporites, was described by Varma & Rawat (1963) from the Late Oligocene-Early Miocene (28–18 mya) sediments of western and eastern India, including oil exploration areas in West Bengal and Assam. Varma & Rawat (1963) give the following short diagnosis “Diporate grains with striated exine”. Elsik & Jansonius (1974) published an elaborate generic diagnosis to include fungal spores of oval to fusiform ambitus with longitudinal ribbed to broadly reticulate ornament. Two pores, one at each end of the spore, are present along the long axis. Unicellate with no septa, except occasionally, a very thin membrane across the inner edge of the apertures.

Heterotypic synonym: Stridiporosporites Ke & Shi 1978 fide Kalgutkar & Jansonius 2000.

Type Species: Striadiporites reticulatus Varma & Rawat 1963.



Figure 1 Striadiporites reticulatusScale bar = 20 μm. Redrawn from Varma & Rawat (1963).



Elsik WC, Jansonius J. 1974 – New genera of Palaeogene fungal spores. Canadian Journal of Botany 52, 953–958. 

Kalgutkar RM, Jansonius J. 2000 – Synopsis of fungal spores, mycelia and fructifications. AASP Contribution Series 39, 1–423. 

Ke P, Shi ZY. 1978 – Early Tertiary spores and pollen grains from the coastal region of the Bohai (in Chinese); Academy of Petroleum Exploration, Development and Planning Research of the Ministry of Petroleum and Chemical Industries and the Nanjing Institute of Geology, and Paleontology, Chinese Academy of Sciences, Kexue Chubanshe, Peking, 177 p. 

Varma CP, Rawat MS. 1963 – A note on some diporate grains recovered from Tertiary horizons of India and their potential marker value. Grana Palynologica 4, 130–139.


Entry by

Ramesh K. Saxena, Birbal Sahni Institute of Palaeosciences, Lucknow, India

(Edited by Kevin D. Hyde, Samaneh Chaharmiri-Dokhaharani, & Achala R. Rathnayaka