Spores of two Microbotryum species from Thian Shan. M. dehiscens: A-spores under LM Olympus BX-51; C-spore in SEM, E-sculpture of spore surface. M. piperi: B-spores under LM Olympus BX-51; D-spores in SEM; F-sculpture of spore surface.

Contexts in source publication

Context 1

... dehiscens (L. Ling) Vánky, 1998: 43. S y n . : Ustilago dehiscens L. Ling, 1949: 124. Sori inside nuts, with purplish-brown spore mass, ustilospores nearly subglobose to irregular 9-10 x 10-13 μm, densely covered with large, truncate, rounded and apically flattened spines visible in SEM at low magnification (Fig. 1A, C). At high magnification two kinds of protuberances were visible: apically flat- tened spines and small warts in the space between the spines as well as on the spine surface (Fig. 1E). The species occurs on Polygonum (sect. Bistorta). Host of the type is P. amplexicaule from Kashmir in India. Other collections are on P. viviparum from ...

Context 2

... nearly subglobose to irregular 9-10 x 10-13 μm, densely covered with large, truncate, rounded and apically flattened spines visible in SEM at low magnification (Fig. 1A, C). At high magnification two kinds of protuberances were visible: apically flat- tened spines and small warts in the space between the spines as well as on the spine surface (Fig. 1E). The species occurs on Polygonum (sect. Bistorta). Host of the type is P. amplexicaule from Kashmir in India. Other collections are on P. viviparum from India and China (Vánky and Oberwinkler 1994). Polygonum nitens is a new host for this species. This smut infected almost all plants at the site shaded by trees of tall spruce (Picea ...

Context 3

... as pustules located between secondary veins of the abaxial side of the leaf, sometimes confluent over a very large area, in the beginning covered by epi- dermis, after opening, the purplish-brown, powdery mass of spores becomes visi- ble. Ustilospores globose 6-8 × 7-10 μm, brownish-violet with striae covering the surface of the ustilospore wall (Fig. 1B). In SEM, mostly non-anastomosing, but interconnected, ramified and very densely situated parallel ridges are visible (Fig. 1D). At high magnification low warts on the ridges are visible (Fig. 1F). According to Vánky and Oberwinkler (1994) the smut inhabits plants of the ge- nus Polygonum (sect. Aconogonon Meisn.), such as: P. alpinum ...

Context 4

... beginning covered by epi- dermis, after opening, the purplish-brown, powdery mass of spores becomes visi- ble. Ustilospores globose 6-8 × 7-10 μm, brownish-violet with striae covering the surface of the ustilospore wall (Fig. 1B). In SEM, mostly non-anastomosing, but interconnected, ramified and very densely situated parallel ridges are visible (Fig. 1D). At high magnification low warts on the ridges are visible (Fig. 1F). According to Vánky and Oberwinkler (1994) the smut inhabits plants of the ge- nus Polygonum (sect. Aconogonon Meisn.), such as: P. alpinum All. (the Alps and mountains in China), P. davisiae Brewer (California and Oregon, USA), P. phytolaccaefolium Meisn. (USA) and ...

Context 5

... powdery mass of spores becomes visi- ble. Ustilospores globose 6-8 × 7-10 μm, brownish-violet with striae covering the surface of the ustilospore wall (Fig. 1B). In SEM, mostly non-anastomosing, but interconnected, ramified and very densely situated parallel ridges are visible (Fig. 1D). At high magnification low warts on the ridges are visible (Fig. 1F). According to Vánky and Oberwinkler (1994) the smut inhabits plants of the ge- nus Polygonum (sect. Aconogonon Meisn.), such as: P. alpinum All. (the Alps and mountains in China), P. davisiae Brewer (California and Oregon, USA), P. phytolaccaefolium Meisn. (USA) and P. songaricum Schrenk (Thian Shan, Kazakhstan). Schwarzman (1960) ...