Source: Collecitons database
[Amsinckia retrorsa Suksd.]
Rough-hairy annual 1-6 dm; stem spreading-hispid and also evidently puberulent or strigose throughout with shorter and softer, ±retrorse hairs; lvs linear or linear-oblong, to 12 cm, seldom over 1 cm wide, the basal ones often crowded and wider than the others; sep 5, 5-12 mm at maturity; cor 5-8 mm, the tube 10-nerved below the insertion of the stamens, not much exserted from the cal; stamens inserted near the middle of the cor-tube; nutlets 2-3 mm; 2n=16, 26. Widespread in w. U.S., occasional with us as a weed in disturbed sites. Apr.-July.
Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.
©The New York Botanical Garden. All rights reserved. Used by permission.
Citation: The vPlants Project. vPlants: A Virtual Herbarium of the Chicago Region. http://www.vplants.org
Copyright © 2001–2009 The vPlants Project, All Rights Reserved.