Contains 3 accepted taxa overall.
Characteristics
Classification
Citation
BARTONIA Muhlenberg ex Willdenow, Ges. Naturf. Freunde Berlin Neue Schriften 3: 444. 1801, nom. cons.
-
TYPE: Bartonia tenella Muhlenberg ex Willdenow 1803.
Species
| Scientific Name | Common Name | Herbarium Specimens | Status | Photos |
|---|---|---|---|---|
| Bartonia paniculata ssp. paniculata | Screwstem Bartonia | |||
| Bartonia verna | Spring Bartonia, White Bartonia | |||
| Bartonia virginica | Virginia Bartonia |
Identification Key
1. Inflorescence often unbranched with a solitary flower, or with up to 8(10) flowers; petal spreading; corolla lobes (4)5-11 mm long, 2.5-3.5 times as long as the calyx; flowering Nov-Apr
1. Inflorescence usually with 3-40 flowers, rarely 1-2; petals usually erect to ascending, sometimes spreading; corolla lobes 2-4 mm long, 1-2 times as long as the calyx; flowering Jul-Nov(Mar)
2
2. Leaves and branching mostly opposite, the nodes numerous and crowded at the base of the stem; corolla lobes oblong, apically apiculate, erose to entire; stigmas connivent, style slender; fruit dehiscing medially below the style
2. Leaves and branching mostly alternate, the nodes few and sparse at the base of the stem; corolla lobes lanceolate, apex acute not apiculate, entire; stigmas spreading, style stout; fruit dehiscing apically by separation from the style
3
3. Stem stiff or stout, often thickened distally, purple; filaments usually purple; anthers often purple, sometimes yellow, 0.5-1 mm long
3. Stem lax, slender, sometimes twining, mostly green; filaments green to yellow; anthers usually yellow, 0.5 mm long
Genus Synonyms
| Synonym | Full Citation | Basionym | Type |
|---|---|---|---|
| No synonyms found. | |||