| The leaf margins themselves are often reflexed to form false indusia that protect the sori. |
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| In fertile plants, sori are produced on the abaxial side of the leaves in summer. |
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| These, when the humidity drops, pop the sori open with a spring like movement, casting the tiny spores all over the place. |
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| The hyperparasite Cladosporium aecidiicola very commonly covers the aecial sori of the spruce broom rust. |
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| Oblong or ovoid sori, 1-3 mm in diameter, develop, containing dusty, brown to black spore masses. |
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| A Nectria sp. fruits on old brooms of the rust and the aecial sori are often covered by Cladosporium aecidiicola, a green-pigmented fungus. |
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| Megalastrum acrosorum is distinguished by indusiate sori and rachises and costules abaxially with pale flaccid appressed scales. |
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| Megalastrum crenulans is characterized by indusiate sori and bullate scales on the pinna rachises and costules. |
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| The spores are contained in structures found on the underside of the leaf called sori. |
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| It is typical of the Asplenium azomanes that the medium and lower pinnae have a small auricle at the base of each pinna directed toward the apex of the frond, with one or two sori inside the auricle. |
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| A sporophyll frond is a fertile leaf that produces spores borne in sporangia that are usually clustered to form sori. |
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| As teliospores within the sori of infected seeds are partially protected, the authors recommend that seeds should be removed as much as possible from the storage and handling equipment before the treatment. |
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| This wakizashi has a deep sori with a soft hamon. |
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| No spores could be harvested from the plant recently located as the sori were too old with all the sporangia dehisced. |
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| In some species the sori appear enclosed in small indusial pouches. |
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| All three species are medium-sized, rhizomatous, herbaceous plants with 3-pinnate fronds and orbicular sori covered with reniform indusia. |
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