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American columbo

Habit Herbs monocarpic, 10–25 dm, glabrous or stems and leaves puberulent.
Stems

1.

Leaf

blades not white-margined;

basal spatulate to elliptic or narrowly obovate, 20–45 × 3–10 cm, apex rounded to acute;

cauline leaves whorled, blade oblong-lanceolate, 10–32 × 3–7 cm.

Inflorescences

elongate, open proximally, ± dense distally.

Flowers

calyx 6–16(–25) mm;

corolla pale yellowish green, purple-dotted and sometimes suffused with pale purple, 10–21 mm, lobes elliptic-oblong, apex short-acuminate;

androecial corona of trichomes and deeply fringed scales to 3 mm;

style slender, distinct;

nectaries and foveae 1 per lobe, foveae round, opening directly adaxial to nectary, without a differentiated area on the corolla surface, rim ± evenly fringed all around.

2n

 = 78.

Frasera caroliniensis

Phenology Flowering late spring–early summer.
Habitat Deciduous, ± open woods, often ravines, calcareous soils.
Elevation 100–700 m. (300–2300 ft.)
Distribution
from FNA
AL; AR; GA; IL; IN; KY; MI; MO; MS; NC; NY; OH; OK; PA; SC; TN; ON
[WildflowerSearch map]
[BONAP county map]
Discussion

An old report of Frasera caroliniensis from Louisiana is plausible, but no documentation is known.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 14.
Parent taxa Gentianaceae > Frasera
Sibling taxa
F. ackermaniae, F. albicaulis, F. albomarginata, F. coloradensis, F. fastigiata, F. gypsicola, F. montana, F. neglecta, F. paniculata, F. parryi, F. puberulenta, F. speciosa, F. tubulosa, F. umpquaensis
Synonyms Swertia caroliniensis
Name authority Walter: Fl. Carol., 88. (1788)
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