American Cow-wheat (Melampyrum lineare) Desrousseaux, 1797 |
Other names: Narrowleaf Cow-wheat, Narrow-leaved Cow-wheat |
Melampyrum lineare occurs in North America, from British Columbia and Washington in the west, to Newfoundland and the Appalachian Mountains (south to northern Georgia) in the east (Map). It prefers well-drained deciduous or coniferous forests and woodlands, including pine stands on sandy soils, but also grows in moist woods, fens, bogs, and rocky barrens. This is a hemiparasitic annual herb obtaining some of its nutrients from roots and rhizomes of various woody and herbaceous plants. The stem is slender, ascending to erect, up to 45 cm in height. The leaves are opposite, linear to ovate; the uppermost leaves often toothed near the base. The flowers are tubular, two-lipped, white to cream-coloured, with the lips tipped with yellow; 5-13 mm long. The fruit is a capsule. M. lineare blooms throughout the summer. Sometimes, this species is placed in the family Orobanchaceae.
D60449 American Cow-wheat (Melampyrum lineare var. americanum) Hickory Run State Park Pennsylvania, USA Copyright © Michael Patrikeev All Rights Reserved |