Contains 4 accepted taxa overall.
Characteristics
Classification
Citation
OPHIOGLOSSUM Linnaeus, Sp. Pl. 1062. 1753.
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TYPE: Ophioglossum vulgatum Linnaeus Lectotypified by Smith, Hist. Filicum 367. 1875.
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Ophioglossum crotalophoroides | Bulbous Adder's-tongue | |||
| Ophioglossum nudicaule | Slender Adder's-tongue | |||
| Ophioglossum petiolatum | Long-stem Adder's-tongue | |||
| Ophioglossum pycnostichum | Southern Adder's-tongue |
Identification Key
1. Epiphyte, lax or pendent; sterile leaf simple or palmately lobed
2
1. Terrestrial, erect; sterile
3
2. Sterile blade palmately lobed (young leaves sometimes unlobed) (Cheiroglossa)
2. Sterile blade linear, sometimes forked (Ophioderma)
3. Stems spheric, cormlike, fleshy, 3-12 mm wide; leaves arising from deep cavity in top of stem; sterile blades usually lying flat on ground, deltate to cordate
3. Stems upright, 1-5(10) mm wide; leaves arising at top of stem; sterile blades erect to spreading, mostly ovate to lanceolate
4
4. Sterile blade veins forming only branching or nonbranching, free, included veinlets within larger areoles
4. Sterile blade veins in larger leaves forming small areoles within larger areoles
5
5. Roots 0.5-1.5 mm wide; sterile blades often folded, ovate to ovate-lanceolate, to 10 cm long, to 4.5 cm wide; sporophore (including stalk) 1.3-2.5 times as long as sterile blade; dried blades uniformly green without pale central band
5. Roots 0.2-0.8 mm wide; sterile blades plane, ovate to lanceolate, to 4.5 cm long, to 1.7 cm wide; sporophore (including stalk) 2-6 times length of sterile blade; dried blades commonly with pale central band
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|---|---|---|
| No synonyms found. | |||