Phacelia species

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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

Scientific Name Phacelia congesta USDA PLANTS Symbol
PHCO2
Common Name Blue Curls, Blue-curls ITIS Taxonomic Serial No.
31473
Family Hydrophyllaceae (Waterleaf)
SEINet Reference
Description Habitat: Sandy, gravelly or rocky soils; found often in shady areas; widespread throughout Texas.
Plant: Leafy Erect or ascending annual or biennial, stems 8 to 20 inches tall with densely hairy/sticky foliage; often growing in colonies.
Leaves: Variable; mostly coarsely once or twice pinnately-divided or pinnatifid, 2-3/8 to 5-1/2 inches long and 1 to 1-5/8 inches wide overall, with 3 to 7 broad lobes or divisions, each lobe coarsely toothed and soft.
Inflorescence: Many small bell-shaped blossoms grouped together in coiled (scorpioid) clusters, each less than 1/2-inch across with 5 overlapping blue to puplish petals; protruding stamens with yellow anthers.
Bloom Period: March to June.
References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, "Wildflowers of the Texas Hill Country" by Marshall Enquist and SEINet
Texas Status
Native
Scientific Name Phacelia coerulea (Phacelia caerulea) USDA PLANTS Symbol
PHCO
Common Name Skyblue Scorpionweed, Skyblue Phacelia ITIS Taxonomic Serial No.
31471
Family Hydrophyllaceae (Waterleaf)
SEINet Reference
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 petals; 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 .
Texas Status
Native
Scientific Name Phacelia popei USDA PLANTS Symbol
PHCO
Common Name Skyblue Scorpionweed, Skyblue Phacelia ITIS Taxonomic Serial No.
31471
Family Hydrophyllaceae (Waterleaf)
SEINet Reference
Description Habitat: Sandy-clay or rocky soils, often in limestone and gypsum environments; open areas, grasslands, brush, roadsides.
Plant: Erect annual up to 14 inches tall branching from base, hairy, somewhat glandular
Leaves: Alternate , petiolate , narrowly oblong overall, 1 to 6 inches long, and 3/8 to 1-1/4 inches wide; pinnate to bipinnate glandular-hairy.
Inflorescence: Many small bell-shaped blossoms crowded together in terminal coiled (scorpioid) clusters; each blossom about 1/4-inch long with 5 overlapping blue to purplish petals; stamens extending past the corolla, style somewhat longer than stamens; 5 oblanceolate to spatulate sepals shorter than petals with gland-tipped and non-glandular hairs.
Bloom Period: March to May.
References: :Wildflowers of Texas" by Michael Eason, A Revision of the Phacelia Crenulatae group for North America by N. Duane Atwood and SEINet .
Texas Status
Native
Scientific Name Phacelia patuliflora USDA PLANTS Symbol
PHPA4
Common Name Sand Phacelia, Purple Phacelia ITIS Taxonomic Serial No.
31568
Family Hydrophyllaceae (Waterleaf)
Wildflower Center Ref.
Description Habitat: Sandy soils along streambanks, woodland openings, praires, roadsides.
Plant: Low, sprawling or weakly upright annual; slender stems up to 1 foot long.
Leaves: Alternate, oblong to broadly oval in outline, shallowly lobed or toothed edges; 3/4 to 4 inches long and 3/8 to 1-5/8 inches wide; lower leaves petiolate, upper, sessile.
Inflorescence: Several blossoms in a curled terminal raceme, each flower about 1 inch across with 5 blue to lavender petals and white centers; flower looks similar to Baby Blue-eyes (Nemophila phacelioides.
Bloom Period: March to May.
References: "Wildflowers of Texas" by Geyaya Ajilvsgi, "Wildflowers of Texas"by Michael Eason, and "Manual of the Vascular Plants of Texas" by Correll and Johnston.
Texas Status
Native



© Tom Lebsack 2019