Arnoglossum floridanum

(A. Gray) H. Robinson

Phytologia 28: 294. 1974.

EndemicConservation concern
Basionym: Cacalia floridana A. Gray Proc. Amer. Acad. Arts 19: 52. 1883
Synonyms: Conophora floridana (A. Gray) Nieuwland Mesadenia floridana (A. Gray) Greene
Treatment appears in FNA Volume 20. Treatment on page 624. Mentioned on page 623.

Plants to 100 cm (weakly rhizomatous). Stems 5-ribbed. Basal leaves: blades (usually with 5 main veins from bases) ovate to elliptic, to 18 cm, margins entire. Cauline leaves: proximal petiolate, ovate, margins crenulate; distal petiolate or sessile, smaller. Involucres 12–15 mm. Phyllaries (light green) ovate, midvein wings uniform or highest at apices. Corollas white or light green, (9–)11–12 mm. Cypselae fusiform, 5 mm (green); pappi 7–8.5 mm. 2n = 50, 52.

Phenology: Flowering May–Jul.
Habitat: Dry sand ridges, pine-oak woodlands
Elevation: 0–20+ m


Of conservation concern.

Arnoglossum floridanum is known only from central peninsular Florida.

Selected References


Lower Taxa