Overview

Distribution

National Distribution

United States

Origin: Native

Regularity: Regularly occurring

Currently: Present

Confidence: Confident

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Global Range: Washington to central California, and scattered throughout the Rocky Mountains in Idaho, Montana, Wyoming, Utah, and Colorado (Camon and Arnett 1991). It is reported to occur in southern British Columbia but apparently no longer occurs there, or was incorrectly reported as having occurred there (Brownell & Catling 1987).

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Calif., Colo., Idaho, Mont., Oreg., Utah, Wash., Wyo.
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Physical Description

Morphology

Description

Plants erect, 6–35 cm in flower, taller in fruit; inflorescences nodding in flower, erect in fruit. Leaves 2, initially near middle of stem, subopposite, wide-spreading, distal portion elongating greatly in fruit; blade elliptic to ovate-orbiculate, 4–12 × 2.5–7.5 cm. Flowers (1–)2–4; sepals dull yellow, marked and suffused often intensely with reddish brown or dark purple; dorsal sepal lanceolate, 13–25 × 3–8 mm; lateral sepals connate, synsepal 11–23 × 4–9 mm; petals porrect-spreading, same color as sepals, flat, ovate-lanceolate to lance-acuminate, 10–23 × 6–17 mm; lip color of sepals, usually less intensely marked, mostly obovoid, 8–14(–25) mm, orifice basal, 4–5 mm; staminode ellipsoid to oblong. 2n = 20.
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Diagnostic Description

Cypripedium fasciculatum is a distinctive orchid which is easily identifiable in flower and fruit. Its leaves appear to be opposite but they are actually subopposite, joined to the stem almost but not exactly in the same spot about midway up the stem. Species in the genus LISTERA resemble this orchid but are much smaller, have prominent hairs, and flowers arranged in an elongate inflorescence.

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Synonym

Cypripedium knightiae A. Nelson
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Ecology

Habitat

Comments: C. fasciculatum is found on ultrabasic soils, granitics, schists, limestone and quartz-diorite. Populations have been reported from rocky to loamy soils in damp to dry sites. They are found in mixed evergreen, mixed conifer, and Douglas-fir forests and in pine and black oak stands. Populations are generally found in areas of from 60 -100% shade provided by tree canopy or shrubs (Rice 1984).

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Moist to dry coniferous forests and thickets; 0--3200m.
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Population Biology

Number of Occurrences

Note: For many non-migratory species, occurrences are roughly equivalent to populations.

Estimated Number of Occurrences: > 300

Comments: Of the 8 states where this species is reported, only one, California, does not actively computer track occurrences. Three states give it a state rank of "S3", four give it an "S2" and one an "S1". There are over 300 occurrences reported from Oregon (ORNHIC 2002). In 1997, 36 precise locations documented in 7 counties in Colorado.

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Life History and Behavior

Cyclicity

Flowering/Fruiting

Flowering Apr--Aug.
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Life Cycle

Persistence: PERENNIAL

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Molecular Biology and Genetics

Molecular Biology

Barcode data: Cypripedium fasciculatum

The following is a representative barcode sequence, the centroid of all available sequences for this species.


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Statistics of barcoding coverage: Cypripedium fasciculatum

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 1
Specimens with Barcodes: 1
Species With Barcodes: 1
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Conservation

Conservation Status

National NatureServe Conservation Status

United States

Rounded National Status Rank: N4 - Apparently Secure

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NatureServe Conservation Status

Rounded Global Status Rank: G4 - Apparently Secure

Reasons: The species' large overall range and the number of known populations suggest that the taxon is not in immediate danger. However, the small size of most populations, their isolated nature, and the presence of conflicting land uses warrant concern for the species' long-term survival throughout its range.

Environmental Specificity: Moderate. Generalist or community with some key requirements scarce.

Comments: In CA, this species is mostly found in serpentine seeps and along streambanks.
It has been hypothesized that a species of fungus associated with deer or elk feces is required for seed germination. Cypripedium fasciculatum occurs in habitats that burn with some regularity (at least historically). The taxon may be able to survive a low intensity underburn, but not high intensity fires in areas where fuel loading is unnaturally high as a result of decades of fire suppression (WANHP 2002).

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Global Short Term Trend: Decline of 10-30%

Comments: Plants in Wyoming are possibly decreasing due to loss of habitat caused by logging. Recent findings may suggest that the species is more widespread in Wyoming than previously considered (Fertig 2000).

Global Long Term Trend: Decline of 30-50%

Comments: Plants in Wyoming are possibly decreasing due to loss of habitat caused by logging. Recent findings may suggest that the species is more widespread in Wyoming than previously considered (Fertig 2000).

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Threats

Degree of Threat: High

Comments: This species is threatened by timbering, road construction, development, fire suppression, and collecting (Fertig 2000). Surface disturbances and canopy elimination may also negatively affect this species

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Relevance to Humans and Ecosystems

Benefits

Economic Uses

Uses: ESTHETIC, Showy wildflower

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Wikipedia

Cypripedium fasciculatum

Cypripedium fasciculatum is a member of the orchid genus Cypripedium. Members of this genus are commonly referred to as Lady's Slipper orchids.

C. fasciculatum, along with C. montanum and C. californicum, are the only members of the genus Cypripedium that are endemic to western North America.

Description[edit]

C. fasciculatum has two plicate leaves that are usually near the ground, but can by elevated up to 15 cm in some individuals. Up to four flowers hang from a drooping stem; sometimes resting on the leaves or even on the ground. The petals and sepals are green to purplish-brown while the pouch is yellowish-green with purple streaking near the opening.

Range[edit]

C. fasciculatum is found in the western United States in Washington, Oregon, California, Colorado, Montana, Idaho, Utah, and Wyoming.[1][2] It is usually found in cool, open coniferous forests, mostly in the mountains.

References[edit]

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