|Navasot ladies'-tresses, Navasota ladies'-tresses, Parks lady's tress|
The following Participating Institutions are custodians for this species in the CPC National Collection:
CPC National Office
San Antonio Botanical Garden
The conservation of Spiranthes parksii is fully sponsored.
Cindy Barrett contributed to this Plant Profile.
The Navasota Ladies'-Tresses is a terrestrial orchid known from four counties in the central part of eastern Texas. The sites are located in oak forested uplands associated with the Brazos River drainages. Cream colored flowers, arranged in a spiral on a thin stemmed spike, bloom in the fall. Planned urban development of land and lignite mining pose the most immediate threat to the species. (USFWS 1984). The Navasota Ladies'-Tresses' delicate beauty should be appreciated in their natural habitat, as they are extremely difficult to transplant (Cawlfield 1996).
Distribution & Occurrence
Found in a narrow band of vegetation called the Post-Oak Savannah. Spiranthes parksii is found in the xeric upland forests in this area. (Wilson 2002)
|24 sites / 99 populations (a few may no longer be extant)|
Conservation, Ecology & Research
Bumblebees are infrequent visitors to this species, but are potential pollinators.
Individual plants often require more than one year to gain enough energy reserve to flower, and plants may be capable of producing flowers only once in their lifetime.
Source: Wilson 2002
Efforts to cultivate this species were initiated by Texas A&M University, and have been continued at the Atlanta Botanical Garden. San Antonio also has plants under cultivation.
Monitoring and surveying
Propagation and relocation studies
Jennings, W.F. 1990. Status Report on four plants considered rare in Colorado: Aletes humilis, Platanthera sparsiflora, Listera borealis, and Listera convallarioides. Unpublished report to the U.S. Forest Service.