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Thymophylla has lacy thread-like foliage bright yellow flowers, survive the heat and produce prolifically. There are several native low growing bright-eyed yellow-flowered plants. The USDA site has listings and maps to help sort out the specific species and to help avoid confusion when it comes to Thymophylla, dyssodia, prickly leaf, and dogweed.
The Thymophylla, below throws seeds everywhere. They seem to like falling into grooves between the concrete of sidewalks and driveways and laughing with its precious tiny yellow blossoms. "I am a hardy delight for your spring enjoyment. You really don't want to pull me as you would a lowly weed!"
It is found in the Southwestern United States and Mexico and can be used in cottage gardens, rock gardens and styled gardens.
| Table I: Thymophylla | | | verified | verified | verified | verified | verified | verified |
| FAMILY | | GENUS | | COMMON NAME | LOCATION | | LJWC | TAMU | SEINet | MBG | iNat | USDA |
| Asteraceae | | Thymophylla acerosa | | Prickly-leaf Dogweed; Texas Dogweed | TX NM AZ UT NV | | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Asteraceae | | Thymophylla aurantiaca | | | Puebla, Oaxaca | | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Asteraceae | | Thymophylla aurea | | Manyawn pricklyleaf | TX NM CO KS Chihuahua, Coahuila, Durango | | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Asteraceae | | Thymophylla aurea var. polychaeta | | Manyawn Pricklyleaf | | | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Asteraceae | | Thymophylla concinna | | Sonoran pricklyleaf | Pima County, AZ, Sonora | | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Asteraceae | | Thymophylla gentryi | | | Durango | | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Asteraceae | | Thymophylla gypsophila | | | Coahuila, Mexico | | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Asteraceae | | Thymophylla micropoides | | Woolly pricklyleaf | TX Chihuahua, Coahuila, Durango, Hidalgo, Nuevo León, San Luis Potosí, Tamaulipas | | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Asteraceae | | Thymophylla mutica | | | Tamaulipas | | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Asteraceae | | Thymophylla pentachaeta | | Common Dog Weed, Fiveneedle Pricklyleaf, Five-needled Thymophylla, Parralena, Stiff-leafed Dogweed, | TX Chihuahua, Sonora, Jalisco, Nuevo León, Aguascalientes, Baja California, Tamaulipas, Zacatecas | | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Asteraceae | | Thymophylla pentachaeta var. belenidium | | Five-needled Thymophylla | TX Chihuahua, Sonora, Jalisco, Nuevo León, Aguascalientes, Baja California, Tamaulipas, Zacatecas | | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Asteraceae | | Thymophylla pentachaeta var. hartwegii | | Hartweg's Pricklyleaf | | | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Asteraceae | | Thymophylla pentachaeta var. puberula | | Fiveneedle Pricklyleaf | | | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Asteraceae | | Thymophylla setifolia | | Texas pricklyleaf | TX NM Aguascalientes, Chihuahua, Coahuila, Durango, Guanajuato, Hidalgo, Nuevo León, Querétaro, San Luis Potosí, Tamaulipas, Zacatecas, Veracruz | | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Asteraceae | | Thymophylla setifolia var. radiata | | Texas Pricklyleaf | | | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Asteraceae | | Thymophylla tenuifolia | | | México State, Tlaxcala, Puebla, Coahuila, Durango, Hidalgo, Nuevo León, Zacatecas | | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Asteraceae | | Thymophylla tenuiloba | | bristleleaf pricklyleaf | TX NM Coahuila, Nuevo León, Nayarit, Tamaulipas | | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Asteraceae | | Thymophylla tenuiloba var. texana | | Texas Bristleleaf | | | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Asteraceae | | Thymophylla tenuiloba var. treculii | | Trecul's Pricklyleaf | | | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Asteraceae | | Thymophylla tenuiloba var. wrightii | | Wright's Pricklyleaf | | | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| Asteraceae | | Thymophylla tephroleuca | | Ashy Dogweed, Ashy Pricklyleaf | TX | | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
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