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| Botrychium pedunculosum
W.H. Wagner |
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| TAXONOMY |
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| Family: |
Ophioglossaceae |
| Genus: |
Botrychium |
| |
| Species Synonyms: |
none |
| Common Names: |
stalked moonwort |
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| DISTRIBUTION |
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| Canada: |
central British Columbia, southwestern Alberta,
southwestern and east-central Saskatchewan |
| Saskatchewan: |
southwestern and east-central Saskatchewan |
| Ecoregion: |
Cypress Upland, Mid-Boreal Lowland |
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| HABITAT |
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| Saskatchewan: |
open pine or spruce woods on
rotting wood litter |
| Canada: |
bushy habitats along streams
and roadsides |
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| RARITY STATUS |
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Provincial
Status According
to Harms (2003): |
Endangered |
| Nature Conservancy
Status: |
G2G3 N1 S1 |
Saskatchewan
Species at
Risk Status: |
None |
| COSEWIC Status:
|
None |
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| Stalked moonwort
is endangered because of extreme rarity in Saskatchewan and is almost always
locally sparse. No immediate threats are known but are possible in the future. |
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| SPECIES
DESCRIPTION |
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| Height: |
< 25 cm |
| Stipe: |
common stalk with reddish-brown
stripe |
| Fronds: |
solitary, sterile blade stalk
0.8 – 2.5 cm long, to 1.1 times length of rachis, blade to 4.5 cm
long, 2 cm wide, ovate to oblong, once pinnate, leathery, dull green; pinnae
up to 5 pairs, ascending, approximate to distant, distance between first
and second pinnae equal or slightly greater than between second and third
pairs, basal pinnae equal in size to second pair, oval to spoon-shaped,
venation pinnate, margin lobed; fertile blades 2 – 4 times as long
as sterile blades, 1 – 3 times pinnate |
| Sporangia: |
short-stalked to sessile on
lateral branches, round |
| Spores: |
small, yellow |
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| BOTRYCHIUM
KEY FOR SPECIES FOUND IN SASKATCHEWAN |
| |
| 1 Sterile blades 5 – 25 cm long,
triangular, 2 – 4 times pinnately compound; fertile blades may be
absent; plants over 12 cm tall |
2 |
| 1 Sterile blades 2 – 5 cm long
or absent, oblong to linear or triangular, simple to pinnate or pinnatifed;
fertile blades always present; plants less than 15 cm tall |
3 |
| |
|
2 Sterile blades thin; sheaths on
common stalk open; fertile blades, when present, arising from high ;on common
stalk; common stalk usually longer than 10 cm, hairless
|
B. virginianum |
| 2 Sterile blades herbaceous or thick
to leathery; sheaths on common stalk closed; fertile blades, when present,
arising from the basal portion of the common stalk; common stalk less than
8 cm long, somewhat hairy |
B. multifidum |
| |
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| 3 Sterile blades linear to oblong,
simple to lobed; plants in deep shade under shrubs and trees |
B. simplex |
| 3 Sterile blades linear to triangular,
pinnate or absent; plants usually in exposed sites |
4 |
| |
|
| 4 Distance between first and second
pinnae greater than that between second and third pairs |
B. simplex |
| 4 Distance between first and second
pinnae equal to or slightly more than between second and third pairs or
sterile blade absent |
5 |
| |
|
| 5 Sterile blades present, basal pinnae
fan-shaped to spoon-shaped, midrib absent |
6 |
| 5 Sterile may be replaced by fertile
blade, basal pinnae inversely lanceolate to linear to oval, midrib present |
9 |
| |
|
| 6 Sterile blades oval to triangular |
B. simplex |
| 6 Sterile blades oblong to lance-shaped |
7 |
| |
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| 7 Sterile blades thick and leathery,
dark greyish-green to yellowish; basal pinnae broadly fan-shaped |
B. lunaria |
| 7 Sterile blades thin (except B. campestre),
dark to light green or yellowish; basal pinnae narrowly fan-shaped or wedge-shaped
to linear |
8 |
| |
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| 8 Sterile blades folded longitudinally,
up to 5 pairs of pinnae; plants of prairies or meadows |
B. campestre |
| 8 Sterile blades flat or folded only
at the base, up to 10 pairs of pinnae; plants of woodlands |
B. minganense |
| |
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| 9 Sterile blade replaced by fertile
blade, resulting in two fertile blades |
B. paradoxum |
| 9 Sterile blade present, distinct
from fertile blade |
10 |
| |
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| 10 Sterile blades subsessile, blades
triangular; fertile blades divided equally several times, about equal to
2.5 times longer than sterile blades |
B. lanceolatum |
| 10 Sterile blades oval to oblong or
triangular; fertile blades with one main axis,
2 - 4 times longer than sterile blades |
11 |
| |
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| 11 Sterile blade long-stalked, stalk
equal to length of blade; few spore sacs may be present on the basal pinnae
of sterile blade |
B. pedunculosum |
| 11 Sterile blade sessile to short-stalked,
stalk less than ¼ length of blade; spore sacs never present on basal
pinnae of sterile blade |
B. hesperium |
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