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Plant Database

Search for native plants by scientific name, common name or family. If you are not sure what you are looking for, try the Combination Search or our Recommended Species lists.

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Perityle bisetosa var. scalaris

Perityle bisetosa (Torr. ex A. Gray) Shinners var. scalaris A. Powell

Twobristle Rockdaisy, Twospike Rockdaisy

Asteraceae (Aster Family)

Synonym(s):

USDA Symbol: PEBIS

USDA Native Status: L48 (N)

 

From the Image Gallery

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Plant Characteristics

Duration: Perennial
Habit: Herb
Leaf Arrangement: Alternate , Opposite
Inflorescence: Head
Size Notes: Up to about 5 inches tall.
Leaf: Leaves opposite below, alternate above. (Webref 3).
Fruit: Fruit is a cypsela (pl. cypselae). Though technically incorrect, the fruit is often referred to as an achene.

Bloom Information

Bloom Color: White
Bloom Time: Apr , May , Jun , Jul , Aug , Sep , Oct , Nov
Bloom Notes: Flowers without ray florets; disc florets white.

Distribution

USA: TX
Native Distribution: Endemic to Brewster County, Texas.
Native Habitat: In limestone rock holes and crevices.

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is on display at the following locations:

NPSOT - Austin Chapter - Austin, TX

Bibliography

Bibref 293 - Manual of the Vascular Plants of Texas (1979) Correll, D. S. & M. C. Johnston

Search More Titles in Bibliography

Web Reference

Webref 3 - Flora of North America (2014) Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.

Additional resources

USDA: Find Perityle bisetosa var. scalaris in USDA Plants
FNA: Find Perityle bisetosa var. scalaris in the Flora of North America (if available)
Google: Search Google for Perityle bisetosa var. scalaris

Metadata

Record Modified: 2012-09-17
Research By: Joseph A. Marcus

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