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| Scientific Name | Psilactis asteroides (Machaeranthera boltoniae) | USDA PLANTS Symbol | PSAS2 |
| Common Name | New Mexico Tansyaster | ITIS Taxonomic Serial No. | 508118 |
| Family | Asteraceae (Sunflower) | Flora of North America Ref. | Click Here |
| Description | Habitat: Sandy soils along river and stream banks, ditches, fields and disturbed areas, 3000 to 4000 ft; uncommon. Plant: Erect annual, single stem branched in upper portion, 1 to 3 or up to 5 feet tall; stems smooth or slightly glandular-hairy. Leaves: Stem leaves oblanceolate to linear, 1/4-inch long or larger; bases cuneate to slightly cordate with entire margins, sometimes slightly clasping. Inflorescence: Solitary composite flower heads about 3/4-inch across with 20 to 40 light blue to violet to white rays, and 40 to 75 yellow disk florets; phyllaries mostly herbacious and unequal length; outer oblong to narrowly elliptic to lanceolate, inner oblanceolate to lanceolate or linear-lanceolate. Bloom Period: June to November. References: ”Manual of the Vascular Plants of Texas" by Correll and Johnston and Flora of North America. |
BONAP Distribution Map |
Texas Status: Native |
