Texas Wildbuds
Coreopsis nuecensoides
(Rio Grande Tickseed)
Coreopsis nuecensoides, Along FM 2434 west of Columbus, Colorado Co. 7007
Coreopsis nuecensoides, Along FM 2434 west of Columbus, Colorado Co. 7009
Coreopsis nuecensoides, Along FM 2434 west of Columbus, Colorado Co. 7029
Coreopsis nuecensoides, Along FM 2434 west of Columbus, Colorado Co. 7015
Coreopsis nuecensoides, Along FM 2434 west of Columbus, Colorado Co. 7015
Coreopsis nuecensoides, Along FM 2434 west of Columbus, Colorado Co. 7017
| Scientific Name | Coreopsis nuecensoides | USDA PLANTS Symbol | CONU6 |
| Common Name | Rio Grande Tickseed | ITIS Taxonomic Serial No. | 37147 |
| Family | Asteraceae (Sunflower) | SEINet Reference |
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| Description |
Habitat: Sandy soils in meadows, ditches, roadsides, and woodlands. Plant: Annual from 8 to 24 inches tall; erect, stems are typically pudescent, rather weak and branched from near the base; leafless uppermost stem. Leaves: Stem leaves on lower portion of the plant, opposite blades with the pairs often well-separated; ovate to oblanceolate-spatulate, 1-1/2 to 2 inches long; lower leaves on long petioles 2 to as much as nearly 4-3/4 inches long; upper leaves are sessile; leaf margins are entire and often with two lateral lobes at the base. Inflorescence: Yellow composite flowers atop the leafless and the longest stems, each blossom 1-3/8 to to 1-7/8 inches across with rays with 3 lobes, middle lobe is deeply notched; brownish-red to brownish-yellow spots near the bases with background becoming orange-ish; disk florest with yellow corollas; two rows of phyllaries below the rays, the 8 outer ones are green, oblong-lanceolate and about 1/4- to 1/3-inch long; the inner ones are smooth, brownish, broadly ovate and somewhat longer than the outer. Bloom Period: March to May. References: iNaturalist and C. nuecensis in these: "Manual of the Vascular Plants of Texas" by Correll and Johnston, Note: Previously mis-identified as C. nuecensis. The description above is the same as that species except for the pubescent stems and smooth inner phyllaries. |
BONAP Distribution Map Map Color Key |
Texas Status: Native Endemic |
Banner photo of Castilleja indivisa and Lupinus ssp. taken along FM 1323 north of Johnson City, Blanco County
© Tom Lebsack 2025
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