Crocanthemum georgianum

(Chapman) Barnhart

in J. K. Small, Man. S.E. Fl., 879. 1933.

Common names: Georgia frostweed
Endemic
Basionym: Helianthemum georgianum Chapman Fl. South. U.S. ed. 3, 36. 1897
Treatment appears in FNA Volume 6. Treatment on page 405. Mentioned on page 400, 401.

Herbs or subshrubs. Stems from caudices and elongate horizontal rootstocks, erect or spreading, (10–)15–30(–40) cm, stellate-tomentose. Leaves usually basal mat-forming or sometimes absent and cauline; petiole 1–2 mm; blade spatulate to oblanceolate, 10–28 × 5–11 mm, surfaces stellate-pannose, without simple hairs; cauline: petiole 1–3 mm; blade oblanceolate to narrowly elliptic, 20–40 × (2–)4.5–9(–12) mm, surfaces stellate-tomentose abaxially, stellate-pubescent adaxially, without simple hairs; lateral veins raised abaxially. Inflorescences terminal, racemose cymes; flowers (chasmogamous or cleistogamous) 2–7 per cyme, produced simultaneously. Pedicels 5–12 mm; bracts 1.2–5 × 0.3–1 mm. Chasmogamous flowers: outer sepals linear, 1.5–3.5 × 0.3–0.5 mm, inner sepals 3.6–6.6 × 3–4.5 mm, apex acute; petals obovate, 6–10(–12) × 4–8(–11) mm; capsules 3.8–5.7 × 3.2–4.5 mm, glabrous. Cleistogamous flowers: outer sepals linear, 1.4–2.2 × 0.3 mm, inner sepals ovate, 3–4.2 × 2.6–3.8 mm, apex acute; capsules 3–4.2 × 2.4–3.3 mm, glabrous.


Phenology: Flowering Apr–Jun.
Habitat: Dry, sandy oak-pine woods, turkey oak sandhills, stable maritime dunes, maritime woodlands
Elevation: 0–600 m

Distribution

V6 765-distribution-map.jpg

Ala., Ark., Fla., Ga., La., Miss., N.C., Okla., S.C., Tex.

Discussion

Basal leaves occur often enough in Crocanthemum georgianum to be very useful for identification; in the eastern United States only C. carolinianum also regularly has basal leaves. Plants of maritime situations tend to be shorter than inland plants.

Selected References

None.

Lower Taxa

None.
... more about "Crocanthemum georgianum"
Bruce A. Sorrie +
(Chapman) Barnhart +
Helianthemum georgianum +
Georgia frostweed +
Ala. +, Ark. +, Fla. +, Ga. +, La. +, Miss. +, N.C. +, Okla. +, S.C. +  and Tex. +
0–600 m +
Dry, sandy oak-pine woods, turkey oak sandhills, stable maritime dunes, maritime woodlands +
Flowering Apr–Jun. +
in J. K. Small, Man. S.E. Fl., +
Helianthemum subg. Lecheoides +
Crocanthemum georgianum +
Crocanthemum +
species +