British fungi - Keys

The genus Stomiopeltis

1	Ascospores 16–22 × 3·5–5 µm, fusiform	betulae
	Ascospores < 15 µm long, usually ± ellipsoid	2
2(1)	Ascospores 12–14 × 3–4 µm, ellipsoid-fusoid	juniperina
	Ascospores < 11 µm long, usually ± ellipsoid	3
3(2)	Asci 16–26 × 4–6 µm; ascospores 6–10 × 1·5–2 µm, narrowly-ellipsoid	pinastri
	Asci usually > 25 µm long; ascospores usually wider, ellipsoid to ellipsoid-cylindric	4
4(3)	Ascospores ellipsoid; asci 5–7 µm wide	cupressicola
	Ascospores ellipsoid-cylindric; asci 8–10 µm wide	dryadis

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