>

Symphyotrichum species [Asteraceae]

Click on the images below to see larger versions.

Scientific Name Symphyotrichum drummondii var. texanum (Aster texanus) USDA PLANTS Symbol SYDRT
Common Name Texas Aster, Drummond's Aster ITIS Taxonomic Serial No. 30462
Family Asteraceae (Sunflower) SEINet
Reference
Click Here
Description Habitat: Openings in wooded areas, dry or rocky soils.
Plant: Upright perennial 12 to 32 inches tall, upper portions much-branched.
Leaves: Alternate, ovate to ovate-oblong or -lanceolate to elliptic or nearly round, 2 to 5 inches long; margins crenate-serrate to sharply serrate; lower leaves with stalks and becoming weak and crumbly with age; upper leaves much smaller and extending down stem as narrow wings.
Inflorescence: Composite flower heads on multiple short stalks, each about 7/8-inch across with 8 to 15 white rays and yellow disk florets.
Bloom Period: September to November.
References: "Wildflowers of Texas" by Geyata Ajilvsgi and Flora of North America.
Notes: Plants found at Mayfield Park in March possibly because of mild winter in 2016.
BONAP Distribution Map

Texas Status:
Native
Scientific Name Symphyotrichum ericoides var. ericoides (Aster ericoides) USDA PLANTS Symbol SYER
Common Name White Heath Aster ITIS Taxonomic Serial No. 522202
Family Asteraceae (Sunflower) SEINet
Reference
Click Here
Description Habitat: Various soil types in prairies, open and disturbed areas.
Plant: Colony-forming upright single-stemmed, much-branched perennial from rhizomes, up to 40 inches tall, main branches arching or reclining and bearing many short flower-bearing branchlets.
Leaves: Midstem leaves usually withered by flowering; upper and branchlet leaves linear to oblong, 3/8 to 3/4-inch long, sessile, grayish green, usually hairy surfaces and margins; branchlet blades appressed (pressed closely to the stems).
Inflorescence: A few to many small white composite flowers crowded along one side of the branchlets, each about 1/2-inch across and with 10 to 18 white rays and 6 to 12 yellow disk florets becoming brown; involucre is cylindrical to bell-shaped, phyllaries in a series of 3 to 4, unequal in length.
Bloom Period: July to December.
References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, "Wildflowers of Texas" by Geyata Ajilvsgi, Flora of North America and SEInet.
BONAP Distribution Map

Texas Status:
Native
Scientific Name Symphyotrichum subulatum var. ligulatum (Symphyotrichum divaricatum, Aster subulatus) USDA PLANTS Symbol SYDI2
Common Name Southern Annual Saltmarsh Aster, Hierba del Marrano ITIS Taxonomic Serial No. 780970
Family Asteraceae (Sunflower) SEINet
Reference
Click Here
Description Habitat: Moist soils in marshy areas, ditches, swales, roadsides and lawns.
Plant: Colony-forming upright, much-branched annual with smooth, slender, wiry stems; 1-1/2 to 5 ft. tall.
Leaves: Narrow, linear to subulate; lower stem leaves 3/4 to 2 inches long and up to 3/8-inch wide, usually withered by flowering; mid and upper leaves 1/4 to 1 inch long, very thin to 1/5-inch wide and sessile.
Inflorescence: A few to many small white composite flowers in open panicular arrays, each less than 5/8-inch across and with 16 to 30 white to lavender or puplish rays and 4 to 10 yellow disk florets; involucre is cylindrical to turbinate (top-shaped) with slender, pointed phyllaries in a series of 3 to 5, unequal in length, often purple-tinged.
Bloom Period: August to December.
References: Aster subulatus in "Manual of the Vascular Plants of Texas" by Correll and Johnston and "Wildflowers of the Texas Hill Country" by Marshall Enquist, Symphyotrichum divaricatum in "Wildflowers of Texas" by Geyata Ajilvsgi and Symphyotrichum subulatum var. ligulatum in Flora of North America.
BONAP Distribution Map


Symphyotrichum divaricatum
Texas Status:
Native

© Tom Lebsack 2021