USGS - science for a changing world

Northern Prairie Wildlife Research Center

  Home About NPWRC Our Science Staff Employment Contacts Common Questions About the Site

Aquatic and Wetland Vascular Plants of the Northern Great Plains

40. Verbenaceae, the Vervain Family

1. Lippa L. -- Fog-Fruit

1. Lippia lanceolata Michx. -- Northern fog-fruit

Perennial from a branched base, with prostrate to ascending 4-angled stems, usually rooting at the nodes, sometimes forming mats, the stem tips and lateral branches ascending to erect; foliage strigose with malpighiaceous hairs. Leaves opposite, the blades bright green, elliptic to ovate, oblong, ovate-lanceolate or oblong-lanceolate, 1.5-7.5 cm long, 0.5-3 cm wide, acute or subacute at the tip, coarsely serrate to below the middle, cuneate at the short-petioled base. Flowers tiny and densely crowded in spikes from the axils, the spikes usually single at the nodes, initially globose, elongating to become short-cylindric, 5-35 mm long, 5-7 mm thick, on slender peduncles 1.5-9 cm long; bractlets ovate to obovate, 2-3 mm long, often rose-pink on the margins. Calyx deeply 2-parted and compressed, membranous, about equaling the corolla tube; corolla pale blue, purplish or white, marcescent and fading, 3-4 mm long, 4-lobed and bilabiate, the lower lip larger than the upper; stamens included or slightly exsert; ovary 2-celled, each cell containing 1 ovule; stigma thickened, oblique or recurved. Fruit included in the calyx, dry, separating into 2 yellowish or olivaceous nutlets 0.9-1.3 mm long. Jun--Sep. Margins of lakes, ponds, streams, ditches and in swales and wet woodlands; e and sc SD, e and c NE; (Ont. to MN and SD, s to FL, TX, NM, CA and n Mex.) Phyla lanceolata (Michx.) Greene.
GIF- Species Photo/Drawing
Lippia lanceolata.
GIF- Distribution Map

Map key

Return to Family -- Verbenaceae - The Vervain Family
Next Section -- Verbena hastata L. -- Blue vervain

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo logo U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information: Webmaster
Page Last Modified: Saturday, 02-Feb-2013 06:44:17 EST
Sioux Falls, SD [sdww55]