Botrychium pedunculosum

W. H. Wagner

Amer. Fern J. 76: 43, figs. 2, 7. 1986.

Common names: Stalked moonwort
IllustratedEndemicConservation concern
Treatment appears in FNA Volume 2.

Trophophore stalk 8–26 mm, to 1.1 times length of trophophore rachis; blade dull green, ovate-oblong to deltate-oblong, 1-pinnate, to 4.5 × 2 cm, leathery. Pinnae to 5 pairs, somewhat ascending, approximate to 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, ovate-rhombic to spatulate, lobed to tip, margin entire to irregularly lobed, apex rounded to acute, venation pinnate. Sporophores 1–3-pinnate, 2–4 times length of trophophore. 2n =180.


Phenology: Leaves appearing in late spring, dying in early fall.
Habitat: Brushy secondary-growth habitats along streams and roadsides
Elevation: 300–1000 m

Discussion

The common stalk on this species tends to be reddish brown. The presence of extra sporangia on the proximal pinnae is known only in Botrychium pedunculosum and B. ascendens.

Botrychium pedunculosum grows with other moonworts, B. lanceolatum, B. lunaria, B. minganense, and B. pinnatum. It has not been found in association with the rather similar and much more common B. hesperium.

Of conservation concern.

Selected References

None.

Lower Taxa

None.
... more about "Botrychium pedunculosum"
rounded +  and acute +
Warren H. Wagner Jr. +  and Florence S. Wagner +
W. H. Wagner +
approximate to well +
simple +  and 5-pinnate +
0 cm0 mm <br />0 m <br /> (4.5 cm45 mm <br />0.045 m <br />) +
ovate-oblong +  and deltate-oblong +
0 cm0 mm <br />0 m <br /> (2 cm20 mm <br />0.02 m <br />) +
Stalked moonwort +
Alta. +, B.C. +, Sask. +  and Oreg. +
300–1000 m +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Brushy secondary-growth habitats along streams and roadsides +
of widely scattered , long , uniseriate hairs +
entire;irregularly lobed +
Leaves appearing in late spring, dying in early fall. +
spreading;ascending +
epiphytic +  and terrestrial +
spore-bearing +  and laminate +
photosynthetic +
with long , uniseriate hairs +  and glabrous +
Amer. Fern J. +
flattened +
not fleshy +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
with corky ridges +  and smooth +
list +  and count +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
not proliferous +
Illustrated +, Endemic +  and Conservation concern +
sessile +  and short-stalked +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
thick-walled +  and trilete +
2-4 times length of trophophore +
flattened +
not fleshy +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
unbranched +  and simple +
0 cm0 mm <br />0 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
tuberculate +  and rugate +
Botrychium pedunculosum +
Botrychium subg. Botrychium +
species +
sessile +  and short-stalked +
0-1.1 times length of trophophore rachis +
0.8 cm8 mm <br />0.008 m <br /> (2.6 cm26 mm <br />0.026 m <br />) +
anastomosing +
pinnate +  and fan +