familyOphioglossaceae
genusBotrychium
subgenusBotrychium subg. Sceptridium
sectionBotrychium sect. Sceptridium
speciesBotrychium jenmanii
Difference between revisions of "Botrychium jenmanii"
Fern Bull. 8: 59. 1900.
Common names: Alabama grapefern
Synonyms: Botrychium alabamense Maxon
Treatment appears in FNA Volume 2.
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| − | --><span class="statement" id="st- | + | --><span class="statement" id="st-undefined" data-properties=""><b>Trophophore </b>stalk 2–15 cm, 0.8–1.2 times length of trophophore rachis; blade somewhat dull gray-green, plane, 3-pinnate, to 18 × 26 cm, herbaceous. <b>Pinnae</b> to 5 pairs, well separated, slightly descending to ascending, distance between 1st and 2d pinnae not or slightly more than between 2d and 3d pairs; basal pinnae remotely alternate and long-stalked (basal pinnae in all other botrychiums are opposite to subopposite and short-stalked), divided to tip. <b>Pinnules</b> ovate to fan-shaped, margins uniformly denticulate, apex rounded, venation like ribs of fan with short midrib. <b>Sporophores</b> 2-pinnate, 1.2–2.5 times length of trophophore. <b>2n</b> =180.</span><!-- |
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| + | |phenology=Leaves green over winter, arising at variable times during last half of summer, meiosis as late as September. | ||
|habitat=Woods and grassy places | |habitat=Woods and grassy places | ||
|elevation=50–500 m | |elevation=50–500 m | ||
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|basionyms= | |basionyms= | ||
|family=Ophioglossaceae | |family=Ophioglossaceae | ||
| + | |phenology=Leaves green over winter, arising at variable times during last half of summer, meiosis as late as September. | ||
|habitat=Woods and grassy places | |habitat=Woods and grassy places | ||
|elevation=50–500 m | |elevation=50–500 m | ||
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|publication year=1900 | |publication year=1900 | ||
|special status= | |special status= | ||
| − | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna- | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/9216fc802291cd3df363fd52122300479582ede7/coarse_grained_fna_xml/V2/V2_449.xml |
|genus=Botrychium | |genus=Botrychium | ||
|subgenus=Botrychium subg. Sceptridium | |subgenus=Botrychium subg. Sceptridium | ||
|section=Botrychium sect. Sceptridium | |section=Botrychium sect. Sceptridium | ||
|species=Botrychium jenmanii | |species=Botrychium jenmanii | ||
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Revision as of 14:20, 27 July 2019
Trophophore stalk 2–15 cm, 0.8–1.2 times length of trophophore rachis; blade somewhat dull gray-green, plane, 3-pinnate, to 18 × 26 cm, herbaceous. Pinnae to 5 pairs, well separated, slightly descending to ascending, distance between 1st and 2d pinnae not or slightly more than between 2d and 3d pairs; basal pinnae remotely alternate and long-stalked (basal pinnae in all other botrychiums are opposite to subopposite and short-stalked), divided to tip. Pinnules ovate to fan-shaped, margins uniformly denticulate, apex rounded, venation like ribs of fan with short midrib. Sporophores 2-pinnate, 1.2–2.5 times length of trophophore. 2n =180.
Phenology: Leaves green over winter, arising at variable times during last half of summer, meiosis as late as September.
Habitat: Woods and grassy places
Elevation: 50–500 m
Distribution
Ala., Fla., Ga., La., Miss., N.C., S.C., Tenn., Va., West Indies in Greater Antilles.
Discussion
Botrychium jenmanii occurs in a variety of habitats. In hardwoods and especially pine woods, it is associated with B. biternatum; in open grassy places and lawns it is found with B. lunarioides. In many ways, B. jenmanii is intermediate between B. biternatum and B. lunarioides, and it is possibly their allopolyploid derivative (W. H. Wagner Jr. 1968). It is the only tetraploid among New World members of subg. Sceptidrium.
Selected References
None.
Lower Taxa
None.