Native Plants

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Weyand, Phyllis

Spiranthes romanzoffiana

Spiranthes romanzoffiana Cham.

Hooded Ladies'-tresses, Hooded Lady's Tresses

Orchidaceae (Orchid Family)

Synonym(s): Ibidium strictum, Spiranthes stricta

USDA Symbol: SPRO

USDA Native Status: L48 (N), AK (N), CAN (N), SPM (N)

1 stem, or several in a clump, with 3-6 leaves near base and up to 60 creamy white bilaterally symmetrical flowers blooming in 1-4 gently spiraled rows in a dense spike.

Western Ladies'-tresses (S. porrifolia), which grows in similar habitats from southern California to southern Washington and also in northern Utah, has a triangular lip barely constricted behind the tip, the sepals only about 3/8" (9 mm) long.

From the Image Gallery

8 photo(s) available in the Image Gallery

Plant Characteristics

Duration: Perennial
Habit: Herb
Leaf Complexity: Simple
Fruit Type: Capsule
Size Notes: Up to about 22 inches tall.
Leaf: Green.

Bloom Information

Bloom Color: White , Yellow
Bloom Time: Jun , Jul , Aug , Sep , Oct
Bloom Notes: Usually white, rarely yellowish white.

Distribution

USA: AK , AZ , CA , CO , CT , IA , ID , IL , IN , MA , ME , MI , MN , MT , ND , NE , NH , NM , NV , NY , OH , OR , PA , SD , UT , VT , WA , WI , WY
Canada: NB , NL , NS , PE
Native Distribution: Southern California to New Mexico; north through most of northern North America.
Native Habitat: Generally moist open places, but variable, occurring from coastal bluffs to high in the mountains.

Growing Conditions

Water Use: High
Light Requirement: Part Shade
CaCO3 Tolerance: Low

Benefit

Conspicuous Flowers: yes

National Wetland Indicator Status

Region:	AGCP	AK	AW	CB	EMP	GP	HI	MW	NCNE	WMVE
Status:		OBL	FACW		OBL	OBL		OBL	OBL	FACW

This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

Web Reference

Webref 38 - Flora of North America (2019) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
Webref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter

Additional resources

USDA: Find Spiranthes romanzoffiana in USDA Plants
FNA: Find Spiranthes romanzoffiana in the Flora of North America (if available)
Google: Search Google for Spiranthes romanzoffiana

Metadata

Record Modified: 2023-04-25
Research By: TWC Staff

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