Arnoglossum ovatum
Arnoglossum sulcatum
ovateleaf cacalia
Georgia Indian plantain
round.
strongly ridged (glabrous or sparsely pubescent).
blades ovate to narrowly lanceolate or lance-linear, to 30+ cm, margins usually entire.
(petioles 10–45 cm) blades (with 3 main veins from bases) broadly ovate or elliptic, 12–15(–20) cm (bases cuneate, decurrent onto petioles), margins entire, sinuate, crenulate, or denticulate.
proximal petiolate, ovate to narrowly lanceolate or lance-linear, margins usually entire;
distal sessile, smaller.
proximal petiolate or sessile (mid stem sessile, bases broadly cuneate), blades narrowly ovate, margins entire, sinuate, crenulate, or denticulate;
distal petiolate or sessile, smaller.
8–10 mm.
(8–)9.5–10(–12) mm.
usually white or greenish, rarely purplish, 8–9(–10) mm.
white or greenish, sometimes tinged with purple, 7–8(–9.5) mm.
(± purple-tinged) lance-ovate, midveins not winged (tips acute to acuminate, papillate).
(pale green) ovate, midvein wings uniform or highest at apices.
fusiform or clavate, 4–5 mm (dark brown, 7–8-ribbed);
pappi (5–)6–7.5 mm.
fusiform or clavate, 4 mm (dark brown, 6–8-ribbed);
pappi 5–7 mm.
= 50, 52, 56.
= 50.
Arnoglossum ovatum
Arnoglossum sulcatum
Arnoglossum ovatum is the most variable species in the genus (as implied by synonymy). Extreme forms (very narrow-leaved, e.g., Cacalia lanceolata form, and broadly ovate-leaved forms) look very distinctive; intergradations occur. Differences could be because of dysploid chromosome races, variances in habitat, or some unknown factors.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Of conservation concern.
Arnoglossum sulcatum occurs in the Florida panhandle and adjacent Georgia and Alabama.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
LA Plants
WildflowerSearch
iNaturalist
USDA Plants Database
