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Published In: Flora Caroliniana, secundum . . . 256. 1788. (Fl. Carol.) Name publication detailView in BotanicusView in Biodiversity Heritage Library

Project Name Data (Last Modified On 7/9/2009)
Acceptance : Accepted
Project Data     (Last Modified On 7/9/2009)
Status: Native


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1. Ophioglossum crotalophoroides Walter (bulbous adder's tongue) Pl. 10a; Map 47

Stems globose, cormlike. Leaves 1–3 per stem, 1.5–4.0 cm long. Vegetative portion flat to concave, but not folded longitudinally, short-stalked, ovate, the base truncate to cordate, the tip obtuse to acute, sharply pointed. Veins all about the same thickness, forming a simple network, the areoles not enclosing thinner networks of veins. Fertile portion 1–5 times as long as the sterile portion. March–June.

Known from a single locality in Oregon County (southeastern U.S., south to South America, West Indies). Disturbed lawns.

This diminutive fern is at the northwestern edge of its range in Missouri. It was first reported for the state by Thomas et al. (1974), and should be searched for elsewhere in the southern portion, particularly in cemeteries of southeastern Missouri. The sterile portions of the leaves often lay flat on the ground.



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