Botrychium crenulatum |
Botrychium biternatum |
|
---|---|---|
crenulate moonwort, dainty moonwort, scalloped moonwort |
southern grapefern, sparse-lobed grapefern, sparselobe 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 7 pairs, usually remote, horizontal, distance between 1st and 2d pinnae not or slightly more than between 2d and 3d pairs, undivided except in proximal 2/3–1/2. |
Trophophore | stalk 0.5–7 mm; blade yellow-green, oblong, 1-pinnate, to 6 × 2 cm, thin, herbaceous. |
stalk 4–20 cm, 2–2.5 times length of trophophore rachis; blade green to dark green, plane, 2–3-pinnate, to 18 × 28 cm, herbaceous. |
Sporophores | 1–2-pinnate, 1.3–3 times length of trophophore. |
1–2-pinnate, 2–3 times length of trophophore. |
Pinnules | elongate, obliquely lanceolate to narrowly lanceolate, margins nearly parallel and finely denticulate, apex short-acuminate, venation pinnate. |
|
2n | =90. |
=90. |
Botrychium crenulatum |
Botrychium biternatum |
|
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, sporophores seasonal, new leaves appearing in late spring–early summer. |
Habitat | Local in marshy and springy areas | Frequent in low woods and brushy fields |
Elevation | 1200–2500 m (3900–8200 ft) | 0–600 m (0–2000 ft) |
Distribution |
AZ; CA; ID; MT; NV; OR; UT; WA; WY
|
AL; AR; DE; FL; GA; IL; IN; KY; LA; MD; MO; MS; NC; NJ; OH; OK; PA; SC; TN; TX; VA; WV
|
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 biternatum often grows with B. dissectum and B. jenmanii. The name B. biternatum was misapplied by L.Underwood to B. lunarioides (W.H. Wagner Jr. 1961). (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 | Osmunda biternata, B. dissectum var. tenuifolium, B. tenuifolium | |
Name authority | W. H. Wagner: Amer. Fern J. 71: 21. (1981) | (Savigny) L. Underwood: Bot. Gaz. 22: 407. (1896) |
Web links |
|