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Key to families | Table of families and genera

Specimen numbers are hyperlinked to records in the Consortium of California Herbaria data view where possible. Taxa are hyperlinked to entries in the Jepson Interchange via the "[Online Interchange]" link.

 

OPHIOGLOSSUM ADDER'S-TONGUE

Alan R. Smith


Roots smooth, pale, generally with bulblets or plantlets. Leaf: trophophore simple, linear to lanceolate or cordate, not midribbed, entire, firm, herbaceous, tip rounded, acuminate, or often mucronate, veins netted with included free branched or unbranched veinlets; sporophore generally > sterile, unbranched, slender. Sporangia: in 2 rows, sunken in a linear, long-stalked axis.
20–25 species: generally warm temperate, tropics. (Greek: snake's tongue, from extended sporophore of leaf) {hort link} Incl highest chromosome numbers known in vascular plants.

Key to Ophioglossum

1. Trophophore 1–2(3) per caudex, separated from sporophore ± at ground, blade lanceolate, < 3(4) cm, < 1 cm wide, tip acuminate or mucronate ..... O. californicum

1' Trophophore 1 per caudex, separated from sporophore well above ground, blade oblanceolate to obovate, generally 4–10 cm, 1.8–4 cm wide, tip rounded ..... O. pusillum

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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