Botrychium crenulatum |
Botrychium jenmanii |
|
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crenulate moonwort, dainty moonwort, scalloped moonwort |
Alabama grapefern, Dixie grapefern |
|
Pinnae | to 5 pairs, spreading, well separated, distance between 1st and 2d pinnae not or slightly more than between 2d and 3d pairs, basal pinna pair approximately equal in size and cutting to adjacent pair, broadly fan-shaped, undivided to tip, margins mainly crenulate to dentate, proximal pinnae with 1 or more shallow incisions, apex rounded, apical lobe linear to linear-cuneate, well separated from adjacent lobes, venation like ribs of fan, midrib absent. |
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. |
Trophophore | stalk 0.5–7 mm; blade yellow-green, oblong, 1-pinnate, to 6 × 2 cm, thin, herbaceous. |
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. |
Sporophores | 1–2-pinnate, 1.3–3 times length of trophophore. |
2-pinnate, 1.2–2.5 times length of trophophore. |
Pinnules | ovate to fan-shaped, margins uniformly denticulate, apex rounded, venation like ribs of fan with short midrib. |
|
2n | =90. |
=180. |
Botrychium crenulatum |
Botrychium jenmanii |
|
Phenology | Leaves appearing in mid to late spring, dying in late summer; in extremely dry years of shorter duration or not appearing at all. | Leaves green over winter, arising at variable times during last half of summer, meiosis as late as September. |
Habitat | Local in marshy and springy areas | Woods and grassy places |
Elevation | 1200–2500 m (3900–8200 ft) | 50–500 m (200–1600 ft) |
Distribution |
AZ; CA; ID; MT; NV; OR; UT; WA; WY
|
AL; FL; GA; LA; MS; NC; SC; TN; VA; West Indies in Greater Antilles |
Discussion | Botrychium crenulatum is commonly associated with B. simplex in California. In the Wallowa Mountains of Oregon it occurs with B. ascendens, B. lunaria, and B. minganense. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 2. | FNA vol. 2. |
Parent taxa | Ophioglossaceae > Botrychium > subg. Botrychium | Ophioglossaceae > Botrychium > subg. Sceptridium > sect. Sceptridium |
Sibling taxa | ||
Synonyms | B. alabamense | |
Name authority | W. H. Wagner: Amer. Fern J. 71: 21. (1981) | L. Underwood: Fern Bull. 8: 59. (1900) |
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