Grusonia grahamii
(Graham’s Dog Cholla)
Grusonia grahamii, River Road, Big Bend National Park 4608
Grusonia grahamii, Lajitas Airport Trails, Brewster Co. 2105
Grusonia grahamii, South County Rd, Brewster Co. 1464
Grusonia grahamii, Hwy 118, Big Bend National Park 3646
Grusonia grahamii, Lajitas Airport Trails, Brewster Co. 2112
| Scientific Name | Grusonia grahamii (Opuntia schottii var. grahamii) | USDA PLANTS Symbol | GRGR6 |
| Common Name | Graham's Dog Cholla | ITIS Taxonomic Serial No. | 907940 |
| Family | Cactaceae (Cactus) | SEINet Reference |
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| Description | Habitat: Desert environment; sandy, gravelly dunes, slopes and flats, 2300 to 5000 ft; Chihuahua Desert adjacent to Rio Grande. Plant: Low, mat-forming cactus, clumps 3 to 4-1/2 inches tall and 3 to 10 ft across; more-or-less cylindrical stems, about 5/8 to 1-3/8 inches in diameter, easily broken at joints. Spines: Central spines (4 to 7) smooth, straw-colored to brown, often pink- or red-tinged, 3/4 to 1-1/2 inches long, gray with age; radial spines (6 to 8) grayish-white, less than 1/2-inch long, bent downwards. Inflorescence: Bright yellow flowers opening early afternoon; 2 inches wide; green to yellow filaments and anthers, cream-colored style and pale yellow-green stigma lobes. Bloom Period: May to June. Fruit: Yellowish, spineless, cylindric to ellipsoid, 7/8 to 1-3/8 inches long. References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, "Cacti of Texas" by Powell, Weedin and Powell and SEINet. |
BONAP Distribution Map Map Color Key |
Texas Status: Native |
Banner photo of Castilleja indivisa and Lupinus ssp. taken along FM 1323 north of Johnson City, Blanco County
© Tom Lebsack 2024