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Houstonia pusilla (Tiny bluet)
Marcus, Joseph A.

Houstonia pusilla

Houstonia pusilla Schoepf

Tiny bluet, Small Bluets, Star violet

Rubiaceae (Madder Family)

Synonym(s): Hedyotis caerulea var. minima, Hedyotis caerulea var. minor, Hedyotis crassifolia, Hedyotis minima, Houstonia minima, Houstonia patens

USDA Symbol: HOPU3

USDA Native Status: L48 (N)

The Star Violet has purple-blue flowers 1/41/3 inch across growing singly on the tips of fine branches. Each blossom consists of a narrow tube crowned by 4 lobes which spread sharply at right angles. The plant grows 46 inches tall with several branches. Though very small, star violets sometimes color a field blue. The opposite leaves are not more than 1/2 inch long, with the flower stem growing out of the leaf axil.


Plant Characteristics

Duration: Annual
Habit: Herb

Bloom Information

Bloom Color: Violet


USA: AL , AR , AZ , DE , FL , GA , IA , IL , IN , KS , KY , LA , MD , MO , MS , NC , OK , SC , SD , TN , TX , VA

National Wetland Indicator Status

This information is derived from the U.S. Army Corps of Engineers National Wetland Plant List, Version 3.1 (Lichvar, R.W. 2013. The National Wetland Plant List: 2013 wetland ratings. Phytoneuron 2013-49: 1-241). Click here for map of regions.

From the National Organizations Directory

According to the species list provided by Affiliate Organizations, this plant is either on display or available from the following:

Fredericksburg Nature Center - Fredericksburg, TX
Lady Bird Johnson Wildflower Center - Austin, TX
Brackenridge Field Laboratory - Austin, TX
Stengl Biological Research Station - Smithville, TX


Bibref 248 - Texas Wildflowers: A Field Guide (1984) Loughmiller, C. & L. Loughmiller

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Additional resources

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


Record Last Modified: 2013-10-14
Research By: TWC Staff

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