- Erect, to 1 m, moderately to densely short-hairy.
- Mostly in whorls of 3-4, sessile, linear to oblong-elliptic, entire or with a few shallow teeth, often revolute, variously pubescent, gland-dotted, with single midvein. Nodes usually with fascicles of axillary leaves.
Node of stem showing fascicled smaller leaves.
- Terminal panicles, +/- flat-topped.
- Narrowly cup-shaped, 4-6 mm long. Bracts with blunt tips.
- Disk florets 5 per head, with corollas 3.5-4.0 mm, often glandular, white. Styles exserted at anthesis.
- August - November.
- Dry open ground surrounding upland sinkhole ponds.
- Native to U.S.
- This showy species is rare in Missouri, being found in only a few counties in the eastern Ozark division. This species is common in the Coastal Plain of the eastern U.S. and has been slowly extending its range northward. The Missouri plants are considered to be var.
Fernald & B.G. Schub. Other infraspecific forms are recognized by many authors, however, there is significant intergradation. The species can hybridize with other members of the
genus, giving apparently fertile forms with intermediate morphology.
Another rare species,
is similar but this plant lacks the fascicles of small leaves in its nodes and has broader leaves.
also has bigger, brighter flowers.
Photographs taken in the Croatan National Forest, NC., 10-20-02.