|large-flower rushlily, large-flowered rush-lily|
|Edward Guerrant, Ph.D.|
The following Participating Institutions are custodians for this species in the CPC National Collection:
Rae Selling Berry Seed Bank & Plant Conservation Programs
The conservation of Hastingsia bracteosa is fully sponsored.
Edward Guerrant, Ph.D. contributed to this Plant Profile.
This lily with long, slender leaves can be found with both purple and white flowers. White-flowered plants (Hastingsia bracteosa var. bracteosa) are found in the north of the 12-mile (20-km) range while purple-flowered plants (var. atropurpurea) are found in the south (Lang and Zika 1997). These two forms were once classified as different species, as they were thought to have very different morphological characters, were not found in the same areas, and there was no evidence of hybrids or intermediates. Recent studies have shown that they are very similar morphologically and genetically (Lang and Zika 1997). The two color forms have now been found growing together in only one moist meadow along with plants of intermediate color (purple, pink, and white all growing together), and they appear capable of crossing with each other. This one meadow forms a transition zone between white and purple forms along the narrow range of the species.
Distribution & Occurrence
Bogs, moist open meadows, seeps and wetlands often overlying serpentine or peridotite rock formations. The areas are open, at low elevations (generally below 800 ft (240 m)), and may have a gentle slope of 5-30 degrees.
|There are approximately 30 occurrences of H. bracteosa var. bracteosa in Oregon. They are primarily on federal land (Forest Service and BLM), with a few on private lands. Population numbers range from about 75 to as many as 20,000. There are approximately 14 occurrences of H. bracteosa var. atropurpurea, with population numbers from 50 to 5,000. All known populations of var. atropurpurea are on federal land (ONHDB 2000).|
Conservation, Ecology & Research
Mining activities - Eight Dollar Mountain has mineral right deposits of laterite (Becking 1982).
Identification of insect pollinators. (David Gordon, in Becking, 1982).
Field investigations to determine suitable habitat for H. bracteosa. Hastingsia bracteosa was associated with the open-meadow, sloping Darlingtonia bogs on serpentine formations (Becking 1982).
Germination trials at The Berry Botanic Garden showed that moist chilling is required for germination. Seeds of Hastingsia bracteosa var. bracteosa were subjected to four tests: Direct placement in either 68F (20C) or alternating 50/68F (10/20C) and 8 weeks of cold stratification followed by placement in either 68F (20C) or 50/68F (10/20C). Only seeds subjected to a period of cold stratification germinated. 100% of the seeds germinated in the 20 treatment and 70% germinated in the alternating temperature treatment (BBG file).
A few sites of Hastingsia bracteosa var. bracteosa are on federal land designated as an Area of Critical Environmental Concern (ACEC).
One site of Hastingsia bracteosa var. atropurpurea is on land designated as a Research Natural Area (RNA).
Formerly a candidate for Federal listing until it was removed in 1996. Hastingsia bracteosa var. bracteosa is a Species of Concern with the U.S. Fish and Wildlife Service and Listed Threatened by the State of Oregon. Hastingsia bracteosa var. atropurpurea is a Species of Concern with the U.S. Fish and Wildlife Service and is a Candidate for listing with the State of Oregon.
Discontinue all water diversion from bog sites (Becking 1982).
Consider for listing if population numbers decrease (Lang and Zika 1997).
Determine optimum germination conditions.
Develop reliable propagation and re-introduction protocols.
Webb, L. 1988. A Guide: to sensitive plants of the Siskiyou National Forest. Forest Service, USDA. Pacific Northwest Region, Siskiyou National Forest. 255p.