Dyschoriste linearis (Torr. & A. Gray) Kuntze
Snake Herb, Polkadots, Narrowleaf Dyschoriste
Acanthaceae (Acanthus Family)
USDA Symbol: DYLI
Several erect stems, 6-12 inches tall, grow from the root of this plant, the branches and stems are covered with stiff, coarse hairs. The leaves are opposite, 3/4-2 3/4 inches long, attached directly to the 4-sided stem. The 2-lipped flowers are 1/2-1 inch long and up to 1 inch across, lavender to purple, with purple stripes in the throat. They grow in the leaf axils on very short stems and are somewhat tucked in between the leaves, scattered here and there on the main stem.
Pale lavender to purple, two-lipped bell-shaped flowers occur in leaf axils in late spring and repeats in late summer with sufficient moisture.
In 2009 Wildflower Center volunteer Valerie Bugh discovered Phydanis bicolor (Bicolor Flea Beetle) adults feed on this species. It was the first reported observation of the beetle species' food host. (Reslit: 3185).
From the Image Gallery
Plant CharacteristicsDuration: Perennial
Root Type: Fibrous
Leaf Retention: Deciduous
Leaf Complexity: Simple
Leaf Shape: Oblanceolate
Leaf Venation: Pinnate
Leaf Pubescence: Puberulent
Leaf Margin: Ciliate
Leaf Apex: Acuminate
Leaf Base: Cuneate
Breeding System: Flowers Bisexual
Fruit Type: Capsule
Size Notes: Up to about 1 foot tall, sometimes taller.
Flower: Flowers 27 mm long
Bloom InformationBloom Color: Purple
Bloom Time: Apr , May , Jun , Jul , Aug , Sep , Oct
DistributionUSA: OK , TX
Native Habitat: Found on rocky-grassy slopes, silty flats or above caprock in most of the western two thirds of Texas. Well-drained sand, loam, clay, limestone.
Growing ConditionsWater Use: Low
Light Requirement: Sun
Soil Moisture: Moist , Wet
Heat Tolerant: yes
Soil Description: a variety of sandy, silty, or rocky soils with good drainage
Conditions Comments: Erect, upright, coarsely hairy herb with multiple, mostly unbranched, square stems. Rigid leaves linear-oblong or narrowly spathulate with fringed edges. Pale lavender to purple, two-lipped bell-shaped flowers occur in leaf axils in late spring and repeats in late summer with sufficient moisture.
BenefitConspicuous Flowers: yes
Deer Resistant: Minimal
PropagationCommercially Avail: yes
From the National Organizations DirectoryAccording to the species list provided by Affiliate Organizations, this plant is on display at the following locations:
Fredericksburg Nature Center - Fredericksburg, TX
Lady Bird Johnson Wildflower Center - Austin, TX
Texas Discovery Gardens - Dallas, TX
Sibley Nature Center - Midland, TX
Stengl Biological Research Station - Smithville, TX
NPSOT - Austin Chapter - Austin, TX
NPSOT - Williamson County Chapter - Georgetown, TX
Herbarium Specimen(s)NPSOT 1028 Collected May 10, 1995 in Bexar County by Mike Fox
BibliographyBibref 281 - Shinners & Mahler's Illustrated Flora of North Central Texas (1999) Diggs, G. M.; B. L. Lipscomb; B. O'Kennon; W. F...
Bibref 248 - Texas Wildflowers: A Field Guide (1984) Loughmiller, C. & L. Loughmiller
Bibref 328 - Wildflowers of Texas (2003) Ajilvsgi, Geyata.
Bibref 286 - Wildflowers of the Texas Hill Country (1989) Enquist, M.
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Web ReferenceWebref 23 - Southwest Environmental Information Network (2009) SEINet - Arizona Chapter
Research LiteratureReslit 3185 - Collection Records and First Adult Host Record for Phydanis bicolor Horn (Coleoptera: Chrysomelidae: Galerucinae: Alticini), An Uncommonly Encountered Texas Flea Beetle (2010) Riley, Edward G., and Quinn, Michael A.
This information was provided by the Florida WIldflower Foundation.
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Additional resourcesUSDA: Find Dyschoriste linearis in USDA Plants
FNA: Find Dyschoriste linearis in the Flora of North America (if available)
Google: Search Google for Dyschoriste linearis
MetadataRecord Modified: 2023-02-07
Research By: TWC Staff, TMH, JSC