Hibiscus aculeatus

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Common name: Comfortroot

Hibiscus aculeatus
Hibiscus aculeatus.jpg
Hibiscus aculeatus
Scientific classification
Kingdom: Plantae
Division: Magnoliophyta - Flowering plants
Class: Dicots
Order: Malvales
Family: Malvaceae
Genus: Hibiscus
Species: H. aculeatus
Binomial name
Hibiscus aculeatus
HIBI ACUL dist.jpg
Natural range of Hibiscus aculeatus from USDA NRCS Plants Database.

Taxonomic notes

Synonym: Hibiscus scaber Michx. USDA NRCS Plants Database


"Shrubs or perennial or annual herbs with stellate pubescence. Leaves unlobed to palmately lobed or dissected; petioles usually long; stipules present, usually caduceus flowers solitary in the upper leaf axils, or in terminal racemes; peduncles and pedicels present or the peduncle obsolete, often elongating in fruit. Involucral bracts 7-15, linear. Sepals 5, widely triangular to triangular-lanceolate, enlarged in fruit; petals oblanceolate to obovate, apex rounded; stamens usually numerous; stigmas 5, capitate, styles free near apex. Capsule 5-locular." [1]

"Perennial with spreading-ascending or, less frequently erect branches to 1m tall. Trichomes of stems, petioles, leaves and pedicels short, bristly, stellate, scabrous. Leaves palmately 3-5 cleft or lobed, 3-9 cm long, mostly wider than long, coarsely and irregularly serrate, truncate to cleft with an inverted broad, V-shaped sinus; petioles 2-10 cm long. Flowers in leafly-bracteate racemes, bracts less divided than the leaves or entire; peduncles obsolete or to 2 mm long; pedicels 5-12 mm long, elongated slightly in fruit, usually with a few long white trichomes; Involucral bracts 8-10, linear, 1-2 cm long, usually palmately or pinnately cleft at apex. Calyx lobes triangular-lanceolate, 8-12 mm long, acute, elongated in fruit, distinctly keeled to the apex and with a thickened margin resembling the keel, pubescent with long stiff, postulate-based trichomes; petals cream, turning a deeper yellow and finally fading to pink, crimson marked at base, 5-6 cm long. Capsule gradually contracted to a beak, 1.7-2 cm long, pubescent with mixed short and long, bristle-like trichomes. Seeds brown, with fine reticulations and with a few whitish papillate, 3.5-4 mm long." [1]




H. aculeatus has been observed to flower May to September with peak inflorescence in July.[2]

Conservation and management

Cultivation and restoration

Photo Gallery

References and notes

  1. 1.0 1.1 Radford, Albert E., Harry E. Ahles, and C. Ritchie Bell. Manual of the Vascular Flora of the Carolinas. 1964, 1968. The University of North Carolina Press. 704-6. Print.
  2. Nelson, G. PanFlora: Plant data for the eastern United States with emphasis on the Southeastern Coastal Plains, Florida, and the Florida Panhandle. www.gilnelson.com/PanFlora/ Accessed: 12 DEC 2016