Difference between revisions of "Ophioglossum engelmannii"
Ber. Deutsch. Bot. Ges. 1: 351. 1883.
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|common_names=Limestone adder's-tongue | |common_names=Limestone adder's-tongue | ||
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| + | |code=F | ||
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|publication title=Ber. Deutsch. Bot. Ges. | |publication title=Ber. Deutsch. Bot. Ges. | ||
|publication year=1883 | |publication year=1883 | ||
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| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V2/V2_178.xml |
|genus=Ophioglossum | |genus=Ophioglossum | ||
|species=Ophioglossum engelmannii | |species=Ophioglossum engelmannii | ||
Latest revision as of 20:21, 5 November 2020
Roots to 25 per plant, tan to brown, 0.5-1.5mm diam., straight, producing proliferations. Stem upright, to 1.5 cm, 4 mm diam., leaves 1-2 per stem. Trophophore stalk to 0.1 cm, 0.01 times length of blade. Trophophore blade erect to spreading, commonly ± folded when alive, uniformly pale green throughout when dried, dull, ovate to ovate-lanceolate, 10 × 4.5 cm, firm, herbaceous, base narrowed abruptly, apex with apiculum to 0.8 mm; venation complex-reticulate, veinlets forming numerous, very tiny, secondary areoles within the major areoles. Sporophores arising at ground level, 1.3-2.5 times as long as trophophore; sporangial clusters 2-4 × 0.13-0.31 cm, pairs of sporangia 20-40, apiculum 0-1.3 mm.
Phenology: Leaves appearing early–late spring, often with second flush later in season following summer rains.
Habitat: Mostly in soil over limestone in open fields, pastures, and cedar glades
Elevation: 50-1000 m
Distribution
Ala., Ariz., Ark., Fla., Ga., Ill., Ind., Kans., Ky., La., Miss., Mo., Ohio, Okla., N.Mex., N.C., Tenn., Tex., Va., W.Va., Mexico, Central America.
Discussion
Selected References
None.