Arnoglossum diversifolium

(Torrey & A. Gray) H. Robinson

Phytologia 28: 294. 1974

Basionyms: Cacalia diversifolia Torrey & A. Gray Fl. N. Amer. 2: 435. 1843
Synonyms: Conophora diversifolia (Torrey & A. Gray) Nieuwland Mesadenia difformis Small Mesadenia diversifolia (Torrey & A. Gray) Greene Senecio floridanus Schultz-Bipontinus
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


Of conservation concern.

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



Lower Taxa

No lower taxa listed.

AuthorLoran C. Anderson +
Authority(Torrey & A. Gray) H. Robinson +
BasionymsCacalia diversifolia +
DistributionAla. +, Fla. + and Ga. +
Elevation0–100 m +
HabitatWet or mucky soils, along streams, swamps, woodlands +
IllustratorYevonn Wilson-Ramsey +
PhenologyFlowering mid May–early Jul (Aug–Sep, peninsular Florida). +
Publication titlePhytologia +
Publication year1974 +
ReferenceNone +
Source xml grained fna xml/V19-20-21/V20 1398.xml +
SynonymsConophora diversifolia +, Mesadenia difformis +, Mesadenia diversifolia + and Senecio floridanus +
Taxon familyAsteraceae +
Taxon nameArnoglossum diversifolium +
Taxon parentArnoglossum +
Taxon rankspecies +
VolumeVolume 20 +