|Scientific Name||Phacelia coerulea (Phacelia caerulea)||USDA PLANTS Symbol||PHCO|
|Common Name||Skyblue Scorpionweed, Skyblue Phacelia||ITIS Taxonomic Serial No.||31471|
|Description||Habitat: Gravelly and arid calcareous hills and banks, sandy-gravelly stream beds, and rocky ledges.
Plant: Delicate annual up to 24 inches tall; many reddish stems, simple or branched and covered with gland-tipped and non-glandular hairs.
Leaves: Variable; stem leaves alternate and a basal cluster may occur; basal and stem leaves on slender petioles 3/8 to 2 inches long; lower blades oblong to ovate in outline, 3/4 to 3+ inches long and 3/8 to 1 inch wide, the edges deeply sinuate to pinnatifid with broadly rounded lobes; upper deeply sinuate; leaf surfaces covered with gland-tipped and non-glandular hairs.
Inflorescence: Many small bell-shaped blossoms grouped together in terminal coiled (scorpioid) clusters 5/8 to 2-3/4 inches long; each blossom about 1/8-inch long with 5 overlapping violet-blue or white corolla lobes; bluish to dark violet stamens within or barely extending past the corolla; bluish style about the same length and stamens; 5 oblanceolate to spatulate sepals with gland-tipped and non-glandular hairs.
Bloom Period: March to May.
References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, A Revision of the Phacelia Crenulatae group for North America by N. Duane Atwood and SEINet.
Note: Experts seem to agree that Phacelia species are difficult to differentiate. Foliage is usually not determinant, blossoms and seed being more reliable. These IDs should be considered in that light.
|BONAP Distribution Map
Map Color Key
Banner photo of Lupinus ssp. by Rick Capozza, Austin TX
© Tom Lebsack 2023