Log In New Account Sitemap
  • Home
  • Specimen Search
    • Search Collections
    • Map Search
    • Exsiccati Search
  • Images
    • Image Browser
    • Search Images
  • Flora Projects
    • Arizona
    • New Mexico
    • Colorado Plateau
    • Plant Atlas of Arizona (PAPAZ)
    • Sonoran Desert
    • Teaching Checklists
  • Agency Floras
    • NPS - Intermountain
    • USFWS - Region 2
    • BLM Flora
    • Coronado NF
  • Dynamic Floras
    • Dynamic Checklist
    • Dynamic Key
  • Additional Websites
    • New Mexico Flores
    • Plant Atlas Project of Arizona (PAPAZ)
    • Southwest Colorado Wildflowers
    • Vascular Plants of the Gila Wilderness
    • Consortium of Midwest Herbaria
    • Consortium of Southern Rocky Mountain Herbaria
    • Intermountain Region Herbaria Network (IRHN)
    • Mid-Atlantic Herbaria
    • North American Network of Small Herbaria (NANSH)
    • Northern Great Plains Herbaria
    • Red de Herbarios del Noroeste de México (northern Mexico)
    • SERNEC - Southeastern USA
    • Texas Oklahoma Regional Consortium of Herbaria (TORCH)
  • Resources
    • Symbiota Docs
    • Video Tutorials
    • Contributing Collections
    • How to contribute specimens
Eupatorium leucolepis (DC.) Torr. & A. Gray  
Family: Asteraceae
Justiceweed
[Eupatorium glaucescens var. leucolepis DC.]
Eupatorium leucolepis image
  • FNA
  • Gleason & Cronquist
  • Resources
Kunsiri Chaw Siripun, Edward E. Schilling in Flora of North America (vol. 21)
Perennials, 40-100+ cm. Stems (from short caudices or stout rhizomes) single, sparsely branched distally, puberulent throughout (more densely distally and among heads). Leaves usually opposite (distal sometimes alternate, ascending to vertical); sessile; blades pinnately nerved, lance-oblong to linear-oblong, 20-60 × 4-10(-15) mm, bases rounded to cuneate (not connate-perfoliate), margins entire or serrate, apices acute, faces villous (abaxial), scabrous (adaxial), gland-dotted. Heads in corymbiform arrays. Phyllaries 8-10 in 2-3 series, narrowly elliptic, 2.5-8 × 0.8-1.2 mm, acuminate to attenuate, mucronate, abaxial faces puberulent, gland-dotted. Florets 5; corollas 3-3.5 mm. Cypselae 2-3 mm; pappi of 30-40 bristles 4.5-5 mm. Eupatorium leucolepis is distinct morphologically by its acuminate to attenuate phyllaries, linear and usually plicate leaves, and phyllotaxy that is almost always strictly opposite to the arrays, with well-separated nodes. Eupatorium leucolepis has recently been shown to include two distinct species, an unnamed diploid that is endemic to Carolina Bay habitats and a series of relatively widespread and mostly polyploid, apomictic populations that include the type. It was recognized after preparation of this treatment that E. novaeangliae (E. leucolepis var. novaeangliae) was derived from hybridization between the unnamed diploid and E. perfoliatum, and is here recognized as a distinct species; it is not directly related genetically to E. leucolepis and thus is not appropriately classified as a variety of it.

Vascular plants of NE US and adjacent Canada
Stem 4-10 dm from a crown or short, stout rhizome, hirtellous or puberulent to sometimes merely strigose; lvs opposite, lance-oblong to linear-oblong or oblanceolate, 3-8 cm נ3-10(-13) mm, toothed or entire, sessile, glandular-punctate; invol 5-7 mm, its bracts imbricate, narrow, tapering to a long-acuminate or mucronately subattenuate point, conspicuously villous-puberulent and often also atomiferous-glandular, their scarious margins mostly inconspicuous; fls 5, the cor white, 3-4 mm; 2n=20, 30, 40. Pine-barrens, wet meadows, and margins of ponds, especially in sandy soil; Mass. to Fla. and La., on the coastal plain or near the coast. July-Oct. Var. leucolepis, from N.Y. s., has bluntly few-toothed to entire lvs, often folded along the midrib. Var. novae-angliae Fernald, local in Mass. and R.I., has sharply toothed, flat lvs, often with slightly longer pubescence than in var. leucolepis.

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.
Eupatorium leucolepis
Open Interactive Map
Eupatorium leucolepis image
Eupatorium leucolepis image
Kathy M. Davis, University of Florida Herbarium
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Eupatorium leucolepis image
Click to Display
100 Initial Images
- - - - -
View All Images
The National Science Foundation
Development supported by National Science Foundation Grants (DBI 9983132, BRC 0237418, DBI 0743827, DBI 0847966)
Powered by Symbiota