. The Canadian field-naturalist. Natural history. 1997 Reddoch and Reddoch: The Orchids in the Ottawa District 133 Platanthera lacera (Michaux) G. Don in Sweet var. lacera Ragged Fringed-orchid Synonym: Habenaria lacera (Michaux) R. Brown Platanthere lacere One of the more recent orchids to be discovered in the District, P. lacera is, on close inspection, an attractive plant, but from a distance it is easily lost among the grasses and weeds with which it grows. It is distinguished by its greenish flowers with long-fringed, tripartite lips. The spur is about 1 to times as long as the lip. D
. The Canadian field-naturalist. Natural history. 1997 Reddoch and Reddoch: The Orchids in the Ottawa District 133 Platanthera lacera (Michaux) G. Don in Sweet var. lacera Ragged Fringed-orchid Synonym: Habenaria lacera (Michaux) R. Brown Platanthere lacere One of the more recent orchids to be discovered in the District, P. lacera is, on close inspection, an attractive plant, but from a distance it is easily lost among the grasses and weeds with which it grows. It is distinguished by its greenish flowers with long-fringed, tripartite lips. The spur is about 1 to times as long as the lip. Description Height: 11 (30 - 53) 74 cm [127 plants]. Flowers: 4 (9 - 31) 56 [61 plants]; light green, pale green, pale yellow, greenish white or yellowish white; lip white at base and occasionally overall, often with sepals more green than lip and petals; flowers generally lighter than surrounding vegeta- tion; laceration of lip quite variable in length and regularity, occasionally almost lacking on central lobe while present on side lobes; in a moderately dense cylindrical inflorescence of some irregularity, but in one case approximately five-ranked; fragrance sweet and floral, becoming much stronger at sunset. Leaves: 1 - 5, grading into an additional 2-4 bracts for a total of 4 - 7 leaves and bracts. Overwintering State: a greyish green, broadly conical shoot, appearing above ground beside the cur- rent year's stem, in late September; herbarium speci- mens show the new shoot and partially elongated root often present at anthesis. We have found that the pres- ence of a green shoot does not necessarily mean that a plant will grow from it the next year. The shoot may disappear by early summer even while the roots are still crisp and alive-looking. By September, however, all of these roots will have disappeared. Capsules: dark brown, ellipsoid to oblong, typi- cally X cm, nearly erect; yield variable, aver- aging 50% [11 plants]. Seeds: brownish orange to brown, released
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