Jepson eFlora
Key to families | Table of families and genera

Key to Ophioglossaceae

View taxon page for Ophioglossaceae

1. Trophophore simple, entire, not midribbed, veins netted with included veinlets; sporangia sunken in simple axis of sporophore ..... OPHIOGLOSSUM

1' Trophophore generally compound (small, simple, entire or 0), generally midribbed, veins free, forked; sporangia sessile or short-stalked, not sunken, in generally pinnately branched sporophore

2. Leaf bud glabrous, trophophore generally < 10 cm wide, generally 1–2-pinnate (0) ..... BOTRYCHIUM

2' Leaf bud hairy, trophophore generally > 10 cm wide, generally 2–4-pinnate

3. Leaf deciduous, sporophore and trophophore joined well above ground level; trophophore sessile, blade thin, membranaceous ..... BOTRYPUS

3' Leaf evergreen for 1 year, sporophore and trophophore joined at to slightly below ground level; trophophore stalked, blade thick, leathery ..... SCEPTRIDIUM


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