Arnoglossum diversifolium

(Torrey & A. Gray) H. Robinson

Phytologia 28: 294. 1974

Synonyms: Conophora diversifolia (Torrey & A. Gray) NieuwlandMesadenia difformis SmallMesadenia diversifolia (Torrey & A. Gray) GreeneSenecio floridanus Schultz-Bipontinus
Basionyms: Cacalia diversifolia Torrey & A. Gray
Treatment appears in FNA Volume 20. Treatment on page 624. Mentioned on page 623.
Plants 100–200(–300) cm. Stems proximally ribbed (and purplish), distally angular (and greenish). Basal leaves: (petioles with brownish hairs) blades ovate to cordate-ovate, to 10 cm (bases truncate), margins denticulate. Cauline leaves: proximal petiolate, deltate-hastate, margins dentate (faces glabrous); distal petiolate or sessile, smaller (faces finely puberulent). Involucres (7.5–)9–11 mm. Phyllaries lance-ovate, midvein wings uniform or highest at apices. Corollas white or purplish, 8.5–9.5(–10.5) mm. Cypselae fusiform, 3 mm; pappi (6–)7–8 mm. 2n = 50.

Phenology: Flowering mid May–early Jul (Aug–Sep, peninsular Florida).
Habitat: Wet or mucky soils, along streams, swamps, woodlands
Elevation: 0–100 m

Discussion

Of conservation concern.

Arnoglossum diversifolium grows primarily in the Florida panhandle and adjacent Alabama and Georgia, and in Putnam and Levy counties, Florida.

References

None.

Lower Taxa

No lower taxa listed.