Showy lady's-slipper
General poisoning notes:
Showy
lady's-slipper (Cypripedium reginae) is a native orchid found in eastern
Canada. The plant can cause dermatitis in sensitive individuals. The symptoms
are similar to those of poison-ivy (Rhus spp.). See additional
information under general notes of Cypripedium acaule.
Description
Plants erect,
21–90 cm. Leaves 3–9, along length of stem, alternate, ascending to spreading;
blade broadly elliptic to ovate or elliptic-lanceolate, 10–27 × 5–16 cm.
Flowers 1–3(–4); sepals white; dorsal sepal suborbiculate to ovate-orbiculate, 25–45
× 18–42 mm; lateral sepals connate, synsepal 24–42 × 15–37 mm; petals
spreading, same color as sepals, oblong to elliptic or ovate-lanceolate, flat,
25–47 × 6–17 mm; lip white, usually suffused around orifice and variably beyond
with pale pink to crimson magenta, subglobose-obovoid, 25–53 mm; orifice basal,
18–28 mm; staminode cordiform-ovoid to ovoid-lanceoloid. 2n = 20.
Nomenclature:
Scientific Name: Cypripedium reginae Walt.
Vernacular
name(s): showy lady's-slipper
Scientific family
name: Orchidaceae
Vernacular family
name: orchid
Geographic Information
Manitoba, New
Brunswick, Newfoundland, Nova Scotia, Ontario, Prince Edward Island, Quebec.
Toxic parts:
Leaves, stems.
Toxic plant chemicals:
Cypripedin.
Animals/Human Poisoning:
Note: When an
animal is listed without additional information, the literature (as of 1993)
contained no detailed explanation.
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