Synonym(s): Aster linariifolius, Aster linariifolius var. victorinii
Image ID: 18008
Image by: Sorrie, Bruce A.
Image Collection: NCBG Digital Library
SCIENTIFIC NAME: Ionactis linariifolius
Include in WOTAS: 1
Publish to Web: 1
Last Modified: 2018-09-17
GENUS CODE: IONAC GENUS SCIENTIFIC:Ionactis GENUS AUTHORITY: Greene GENUS COMMON: Aster GENUS SUMMARY: A genus of 5 species, herbs, of North America. Ionactis has usually been included in Aster, but differs in many characters and is more closely related to Heterotheca (Nesom & Leary 1992). GENUS IDENTIFICATION: GENUS REFERENCES: Nesom in FNA (2006b); Nesom & Leary (1992)=Z; Cronquist (1980)=SE.
FAMILY CODE: ASTERA FAMILY SCIENTIFIC:Asteraceae FAMILY AUTHORITY: Dumortier 1822 or COMPOSITAE Giseke 1792 FAMILY COMMON: Aster Family FAMILY SUMMARY: A family of about 1500-1700 genera and 20,000-25,000 species, shrubs, herbs, trees, and vines, cosmopolitan in distribution. FAMILY REFERENCE: Cronquist (1980)=SE throughout family treatment.
INTRO:Erect, clumped perennial of dry savannas, sandhills, flatwoods, prairie-like openings, glades, barrens, rock outcrops and road banks. STEMS: Stems few to many forming dense tussocks, branched above in inflorescence, greenish-yellow to reddish, hairy. LEAVES: Leaves alternate (appearing whorled), sessile,linear, to 1 1/2 in. long, stiffly spreading, shiny dark green above, paler below, rough-hairy. INFLORESCENCE: FLOWERS: Daisy-like composite flowers (heads) 1-many on short branches near top of stem; heads about 1 in. wide, consisting of 7-20 violet ray florets encircling a center disk of yellow tubular florets. Several series of green and white bracts surround the cylindrical base of each head. FRUITS: COMMENTS: HEIGHT: 12-18 in. DURATION:
LEAF ARRANGEMENT: LEAF COMPLEXITY: LEAF RETENTION: FLORAL CHARACTERISTICS
BLOOM TIME: July-November
BLOOM COLOR: Violet to white
FRUITING PERIOD: DISTRIBUTION
HABITAT TYPE: Disturbed, Outcrops and glades, Pine savannas, Sandhills, Woods margins
NATIVE RANGE: eastern & central N. America HORTICULTURAL
Plant Sale Text: Stiff-leaf aster has an upright growth habit and is very showy in bloom. This southeastern native perennial blooms for many weeks, often until frost, with 1-inch daisy-like flowers in clusters. Stiff-leaf aster has durable foliage that looks attractive throughout the growing season. The Cherokee used the roots of this plant for a variety of medicinal uses, including treating pain and fevers.
Bloom Table Text:
Sun, Part Shade
MINIMUM HARDINESS ZONE: 4
MAXIMUM HARDINESS ZONE: 9
GERMINATION CODE: 1
Bee Friendly, Butterfly Friendly
USDA Symbol: IOLI2
USDA Common Name: Flaxleaf Whitetop Aster
Native Status: L48 (N), CAN (N)
Distribution: USA (AL, AR, CT, DC, DE, FL, GA, IA, IL, IN, KS, KY, LA, MA, MD, ME, MN, MO, MS, NC, NH, NJ, NY, OH, OK, PA, RI, SC, TN, TX, VA, VT, WI, WV), CAN (NB, QC)
Growth Habit: Forb/herb
SCIENTIFIC NAME: Ionactis linariifolia
COMMON NAME: Stiff-leaved Aster
SYNONYMY: [= FNA, K2, Pa, Va, WH3, Z; = I. linariifolius - Il, S, orthographic variant; = Aster linariifolius Linnaeus - C, G, RAB, SE, W, WV]
HABITAT: Dry savannas, sandhills, pine flatwoods, prairie-like openings, glades, and barrens, high elevation rock outcrops and glades, to at least 1450 m, dry roadbanks, woodland edges, rocky woodlands.
COMMENTS: ME and QC west to WI, south to ne. FL, Panhandle FL, and TX. There appears to be substantial variation in I. linariifolia, with montane (and northern) populations having considerably longer and broader leaves than Coastal Plain (and southern) populations; additional study is needed.
RANGE MAP: Ionactis linariifolia.png
Key to Map SymbolsABOUT FAMILY (Weakley Flora) Asteraceae Dumortier 1822 or COMPOSITAE Giseke 1792 (Aster Family) SUMMARY: A family of about 1500-1700 genera and 20,000-25,000 species, shrubs, herbs, trees, and vines, cosmopolitan in distribution. REFERENCE: Cronquist (1980)=SE throughout family treatment.ABOUT GENUS (Weakley Flora) Ionactis Greene (Aster) SUMMARY: A genus of 5 species, herbs, of North America. Ionactis has usually been included in Aster, but differs in many characters and is more closely related to Heterotheca (Nesom & Leary 1992). REFERENCE: Nesom in FNA (2006b); Nesom & Leary (1992)=Z; Cronquist (1980)=SE.
SERNEC: Find Ionactis linariifolius in Southeast Regional Network of Experts and Collections (if available) UNC SERNEC: Find Ionactis linariifolius in
University of North Carolina Chapel Hill Herbarium - Southeast Regional Network of Experts and Collections (if available)