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Plant Profile

Long-sepal Dragon-head (Physostegia longisepala)

Physostegia longisepala blooming in situ in Texas.

Photo Credit: Laura Zebehazy

Global Rank: G2 - Imperiled
Legal Status: N/A
Family: Lamiaceae
State: LA, TX
Nature Serve ID: 129193
Lifeform: Forb/herb
Date Inducted in National Collection: 02/21/2003

Description:

Erect, rhizomatous perennial to 3 feet tall, stem squarish, with 9-15 nodes below inflorescence; primary rhizome branching to produce one to many elongate horizontal secondary rhizomes. Leaves opposite and simple, lower ones with petioles and upper ones sessile, mostly clasping the stem, 2-5" long, 1/5-3/4" wide with or without teeth. Flowers in 1-7, terminal, bracted racemes, tubular, to 1 1/4" long with five lobes, deep lavender to to reddish-violet, spotted or streaked with purple. Flowering early May to early July.

Where is Long-sepal Dragon-head (Physostegia longisepala) located in the wild?

Habitat:

Relatively open areas on poorly drained, acid loams on level terrain. Probably originally found in fire-maintained wetland pine savannas or in the transition zone between such flatwoods and adjacent coastal prairies; now found primarily in secondary habitats such as wet barrow ditches along roadsides and moist areas in human-made clearings in pine woodlands.

Distribution:

West Gulf Coastal Plain of Louisiana and Texas.

States & Provinces:

Long-sepal Dragon-head can be found in Louisiana, Texas

Which CPC Partners conserve Long-sepal Dragon-head (Physostegia longisepala)?

Mercer Botanic Gardens

Not Sponsored

Assigned 06/09/17

CPC's Plant Sponsorship Program provides long term stewardship of rare plants in our National Collection. We are so grateful for all our donors who have made the Plant Sponsorship Program so successful. We are in the process of acknowledging all our wonderful plant sponsorship donors on our website. This is a work in progress and will be updated regularly.

Conservation Actions

Nature Serve Biotics

05/02/2017

Restricted to the coastal prairie/pine flatwoods region of southwest Louisiana and southeastern Texas. The natural habitat has been altered by agricultural and silvicultural practices but populations appear to thrive in disturbed rights-of-way sites.

Dave Berkshire

01/01/2010

> 40 known populations