The following Participating Institutions are custodians for this species in the CPC National Collection:
The Lady Bird Johnson Wildflower Center
San Antonio Botanical Garden
Botanical Research Institute of Texas
The conservation of Styrax texanus is fully sponsored.
Cindy Barrett contributed to this Plant Profile.
Nestling its roots deep into the limestone cliffs of the Edwards Plateau, the Texas Snowbells (Styrax texana) dangles its delicate white flowers over the crystal clear waters of a Hill Country stream below. This is a beautiful, 10-15 foot tall deciduous shrub with heart-shaped leaves, which are green on top and silky white below. Each flower sets fruit, which contain the seeds for future generations of this species. The problem lies in the location of mature trees: most seeds ripen and fall into the stream below and are carried away. Some seedlings do survive but are quickly eaten by deer, wild goats, sheep or rodents. Presently, most wild populations consist of only mature trees. (Cox 2000).
Distribution & Occurrence
Currently found on steep limestone cliffs or bluffs above stream channels in juniper-oak savannas on the Edwards Plateau as well as in creosote bush shrub habitat in the eastern Trans-Pecos basins. (USFWS 1984)
Associates often include the Texas ash, sycamore, little walnut, Mexican silktassel, Lacey oak, Texas oak, Mexican buckeye, Texas mountain laurel, Texas persimmon, guajillo, and Ashe juniper. (Texas Parks and Wildlife 2002)
|When this species was listed in 1984, only 39 plants were known in the Texas counties of Edwards and Real. As of 2002, Texas Parks and Wildlife reports 10 populations in Edwards, Real, and Val Verde counties in Texas. (Texas Parks and Wildlife 2002)|
Conservation, Ecology & Research
Seed and seedling predation.
Flooding and erosion.
Landowners have shown an interest in new re-introduction studies.
Germination and growth studies.
WWF. 1990. The official World Wildlife Fund (WWF) guide to endangered species of North America. Washington, D.C.: Beacham Publishing. 1180p.