Arnoglossum floridanum

(A. Gray) H. Robinson

Phytologia 28: 294. 1974

Synonyms: Conophora floridana (A. Gray) NieuwlandMesadenia floridana (A. Gray) Greene
Basionyms: Cacalia floridana A. Gray
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

Discussion

Of conservation concern.

Arnoglossum floridanum is known only from central peninsular Florida.

References

None.

Lower Taxa

No lower taxa listed.