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Perityle aglossa

Perityle aglossa A. Gray

Bluff Rockdaisy, Rayless Rockdaisy

Asteraceae (Aster Family)



USDA Native Status: L48 (N)

This species is very similar to rayless individuals of Perityle parryi.


From the Image Gallery

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Plant Characteristics

Duration: Perennial
Habit: Herb , Subshrub
Breeding System: Flowers Bisexual
Inflorescence: Head
Size Notes: 15-45 cm in height. (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: Yellow
Bloom Time: Apr , May , Jun , Jul , Aug , Sep , Oct , Nov
Bloom Notes: Flowers without ray florets; disc florets yellow.


Native Distribution: Trans-Pecos Texas and Coahuila, Mexico.
Native Habitat: Limestone rock crevices; 6001300 m. (Webref 3).

Growing Conditions

Water Use: Low
Light Requirement: Sun
Soil Moisture: Dry
CaCO3 Tolerance: High
Drought Tolerance: High
Heat Tolerant: yes
Soil Description: Grows in limestone rock crevices and talus.

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


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 aglossa in USDA Plants
FNA: Find Perityle aglossa in the Flora of North America (if available)
Google: Search Google for Perityle aglossa


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

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