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Cypripedium parviflorum, commonly known as yellow lady's slipper or moccasin flower, is a lady's slipper orchid native to North America. It is widespread, ranging from Alaska south to Arizona and Georgia. It grows in fens, wetlands, shorelines, and damp woodlands.
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Plant: 16 to 60 cm tall, reported to 80 cm elsewhere: stem, bracts, and leaves pubescent; flower stem rises 10 cm above leaves; one flower, rarely two. Roots: few to many slender roots to 4 cm long on jointed rhizome. Leaves: ovate lanceolate, cauline, plicate, four to six on blooming plants, from 9 ⨉ 4 cm to 14 ⨉ 5 cm; covered with fine hairs on underside; a few hairs on topside. Floral bracts: ovate lanceolate bract at base of ovary, 7 ⨉ 2 cm. Flowers: bright yellow pouch with greenish to reddish sepals and petals; up to 10 cm high ⨉ 10 cm wide. Sepals: yellowish green with reddish stripes that turn to dots near pouch, fine hairs on back and edges; dorsal sepal ovate lanceolate, slightly concave, 4 ⨉ 2.2 cm; synsepal ellipitic, slightly concave; slight notch at tip, 3.2 ⨉ 1.4 cm. Petals: linear, acute, yellowish green with reddish stripes that turn to dots at pouch; 5.5 cm long ⨉ 0.7 cm wide; fine hairs on back along well-defined central ridge; few hairs on inner one-third toward pouch. Lip: bright yellow obovoid (pouch- or slipper-shaped), 3.2 cm wide ⨉ 4.0 cm high; opening 1.2 ⨉ 2.0 cm, with incurved margin; red dotted stripes on veins and faint reddish dots on inside and back of pouch. Column: light green with red dots at base, 1.5 cm high; two fertile anthers, one to either side; staminode yellow with red dots, arrowhead-shaped, with V form (folded); pollinia yellow sticky masses. Capsule: ellipsoidal, pubescent, 2.2 to 3 cm long ⨉ 0.6 to 1.3 cm in diameter
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Cypripedium parviflorum var. exiliens
Cypripedium parviflorum var. exiliens SheviakCypripedium parviflorum var. makasin
Cypripedium parviflorum var. makasin (Farw.) SheviakCypripedium parviflorum var. parviflorumCypripedium parviflorum var. pubescens
Cypripedium parviflorum var. pubescens (Willd.) O.W.KnightDeutsch
behaarter Frauenschuh · kleinblütiger Frauenschuh · Kleinblütiger Frauenschuh
Englisch
American Yellow Lady's-slipper · American Yellow Lady'S-Slipper · Greater Yellow Lady'S Slipper · Greater Yellow Lady'S-Slipper · large yellow lady's-slipper · Large Yellow Lady'S-Slipper · lesser yellow lady's slipper · Lesser Yellow Lady's Slipper · Lesser Yellow Lady'S Slipper · Lesser Yellow Lady'S-Slipper · Northern Small Yellow Lady'S Slipper · Northern Yellow Lady'S-Slipper · small-flowered yellow lady's slipper · Small-Flowered Yellow Lady'S Slipper · small yellow lady's-slipper · Small Yellow Lady'S-Slipper · Southern Small Yellow Lady'S-Slipper · Yellow Lady'S Slipper · Yellow Lady'S-Slipper
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Inserat erstellen →Newfoundland to British-Columbia, south to Georgia, Arizona, and Washington; Europe. Newfoundland to Alaska and south to Oregon in the West. In the East along the Atlantic Coast, it is in every state except Florida and extends across to Louisiana and eastern Texas. New Mexico state: Catron, Colfax, Grant, Los Alamos, Otero, San Miguel, San Juan and Santa Fe Counties. Arizona state: Apache, Graham, and Greenlee Counties.
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Cypripedium parviflorum was given its scientific name in 1791 by Richard Anthony Salisbury. It is classified as part of the genus Cypripedium as part of the family Orchidaceae. C. parviflorum is a highly variable species, which is a result of both hybridization and phenotypic plasticity. Four varieties are widely recognized. They are: C. parviflorum var. exiliens Sheviak – Alaska C. parviflorum var. makasin (Farwell) Sheviak – commonly called the "northern yellow lady's-slipper"; widely distributed over much of Canada and the northern United States C. parviflorum var. parviflorum – commonly called the "small yellow lady's-slipper"; southern part of the species range, from eastern Nebraska and eastern Oklahoma east to Virginia and New Hampshire C. parviflorum var. pubescens (Willdenow) O. W. Knight – commonly called the "large yellow lady's-slipper"; very widespread across much of United States, Canada, and Saint Pierre and Miquelon; treated by many authors as a distinct species, Cypripedium pubescens C. parviflorum var. parviflorum, showing pubescent bract and dark maroon sepals C. parviflorum var. pubescens, showing yellow-green sepals spotted with maroon Cypripedium parviflorum has 36 synonyms of the species or three of its four varieties.
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