NAME Chlamydosporites gramineus
AGE Upper Cretaceous(?); Deccan Intertrappean Series.   AGE span: 99.6...65.5 mya
K&J CLASSIFICATION (2000) Basidiomycetes, Ustilaginales.
FIGURE(S)
Image of
Pl.36fig.3.jpg
FIGURE REFERENCE Paradkar SA. 1975. On a new monocot axis with pathogenic fungi from the Deccan Intertrappean beds of India; Geophytology, v. 5, p. 94-97.
SPECIES, AUTHORITY C. gramineus Paradkar 1975, p. 96, pl. 1, fig. 4, text-figs. 4-6.
LOCATION Mohgaonkalan, District Chhindwara, M.P., India.
ORIG DESCRIPTION* Mycelium profusely branched hyphae, septate, 4-6 µm broad, with haustoria; chlamydospores 10-12 µm in diameter ["thick"], with reticulate exine and thin intine.
COMMENTS* The fungal mycelium is of septate hyphae developed profusely in the intercellular spaces of the ground tissue [of a culm of a fossil grass]. Haustoria are clear (text-fig. 5) [Pl. 36, fig. 3b]. Each hypha is 4-6 µm wide and is much branched. Associated with this mycelium are small spores. Each spore is 10-12 µm in size, with a thick reticulate [Pl. 36, fig. 3a] wall. The inner membrane is thin (text-fig. 6) [Pl. 36, fig. 3c]. These spores seem to be oidia. (Other growth stages of spores are sexual, [but] gametangia are not seen [in this specimen].) The presence of haustoria indicates the parasitic nature of the fungus. This fact, along with the branched septate mycelium and the asexual spores help to identify this fungus as [belonging to] the Basidiomycetes. Ustilaginous fungi show such chlamydospore formation in many grasses and sedges. Out of these, [the new form] compares well with the chlamydospores of Tilletia in size and spore ornamentation.
PUBLICATION REFERENCE Paradkar SA. 1975. On a new monocot axis with pathogenic fungi from the Deccan Intertrappean beds of India; Geophytology, v. 5, p. 94-97.
K&J REMARKS
TYPE
ALL NAMES (Including synonyms) Chlamydosporites gramineus
SERIAL NUMBER 182
PUBLIC COMMENTS host: grass
habitat: grass culm
classification: Fungi, Basidiomycota, Ustilaginomycotina (?) Need to examine material.
 *For source, see Publication Reference.