Sphacelotheca sahayae Mundk., Trans. Brit. Mycol. Soc.
S. sahayai
A new smut fungus on a new grass: Sporisorium capillipedii-alpini (Ustilaginales) sp. nov. infecting Capillipedium alpinum (Poaceae) sp. nov., from Sichuan, China
Denchev, Teodor T.
Sun, Hang
Denchev, Cvetomir M.
Boufford, David E.
Phytotaxa
2016
2016-03-14
252
3
217
227
4ZC83
(Mundk.) Vanky
Vanky
Mundk.
[136,576,662,689]
Ustilaginomycetes
Ustilaginaceae
Sporisorium
Fungi
Ustilaginales
7
224
Basidiomycota
species
sahayae
Basionym: Sphacelotheca sahayaeMundk., Trans. Brit. Mycol. Soc.23: 93, 1938 (as S. sahayai).
Type:—On Dichanthium annulatum( Poaceae). INDIA. Ganjam District: at Chatrapur, 30 August 1904, leg. E. J. Butler( holotype, HCIO7333; isotypes, IMI, H. U. V. 17 303!). Soriin all spikelets (sterile and fertile) of the inflorescence, 1.5–2.5 mmlong, ovoid or ellipsoidal, at first concealed by the glumes, later partially visible between the spreading glumes; initially covered by a thin, fragile, yellow-brown peridium that soon ruptures irregularly exposing a single, stout, slightly tapering, not branching columella, rarely with few shallow longitudinal furrows, surrounded by a semi agglutinated, pulverulent at maturity, blackish brown mass of spores and sterile cells. Sterile cellsrather tightly packed in irregular groups or short rows, single sterile cells not seen, collapsed, 7–13(–16) μm long, hyaline; wall 0.6–1.2(–2.5) μm thick, smooth. Sporesslightly irregular, subglobose, broadly ellipsoidal, globose, ovoid or sometimes ellipsoidal, (9.5–)10–13(–14) × (8.5–)9–11.5(–12.5) (11.4 ± 0.7 × 10.3 ± 0.7) μm (n/ 1= 100), medium reddish brown; wall slightly uneven, 0.7–1.4(–1.7) μm thick, moderately echinulate, spore profile affected. In SEM spines up to 0.4(–0.6) μm high, densely packed, punctate between the spines. Specimen examined:— Isotype( H. U. V. 17 303). Known host and distribution:—On Poaceae: Dichanthium annulatum(Forssk.) Stapf, Dichanthium sericeum(R. Br.) A. Camus(incl. Dichanthium affine(R. Br.) A. Camus). Asia ( India), Australia.