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National Collection Spotlight: Case’s ladies tresses

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Single tiny flower of Spiranthes casei. […]
Spiranthes casei flowers close-up in Canada. […]
Spiranthes casei plants in situ in Michigan. […]
Spiranthes casei in situ in Michigan […]
Peter Zale and Matt Taylor, Longwood Gardens Several species of Spiranthes native to the Eastern U.S. are considered rare, threatened or endangered by federal and state agencies. Using the Pennsylvania endangered Spiranthes casei as a model species, experiments were designed to determine optimal conditions for in vitro seed germination and seedling development. Seeds were collected […]