Bartonia virginica

(Linnaeus) Britton

Sterns & Poggenburg, Prelim. Cat., 36. 1888.

Common names: Yellow or Virginia or late-flowering bartonia yellow screwstem bartonie de Virginie
Endemic
Basionym: Sagina virginica Linnaeus Sp. Pl. 1: 128. 1753
Synonyms: Bartonia tenella Willdenow
Treatment appears in FNA Volume 14.
Revision as of 13:16, 24 November 2024 by imported>Volume Importer
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Herbs ± erect, yellowish green, often purplish proximally or occasionally more extensively, 3–45 cm. Leaves all opposite, proximal alternate and distal opposite, or rarely all alternate, closely spaced near base of stem, gradually more widely spaced distally; blade 0.9–4.7 mm. Inflorescences racemoid cymes or small thyrses with strongly ascending branches. Flowers: calyx lobed nearly to base, lobes lanceolate, 2–4.5 × 0.4–1.1(–1.4) mm, apex acuminate; corolla white to greenish white or yellowish green, distally or occasionally more extensively often purple-tinged especially in age, 2.3–4.4 mm, lobes oblong, 1.6–3.2 × 0.7–1.4 mm, that is, 0.6–0.8 times the length of the corolla, margins usually erose-serrate distally, apices rounded to abruptly acute, mucronate; anthers often recurving in age but not coiling, yellow or purple, 0.5–1.2 mm, apex mucronate to short-acuminate; style absent; stigmas decurrent along sutures of ovary. Capsules dehiscent medially. 2n = 52.


Phenology: Flowering late summer–fall.
Habitat: Bogs, shores, mesic to wet, open woods, usually peaty soils.
Elevation: 0–500 m.

Distribution

St. Pierre and Miquelon, N.B., N.S., Ont., Que., Ala., Conn., Del., D.C., Fla., Ga., Ill., Ind., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., N.H., N.J., N.Y., N.C., Ohio, Pa., R.I., S.C., Tenn., Vt., Va., W.Va., Wis.

Discussion

Inrolling of margins during drying may cause the corolla lobes of herbarium specimens of Bartonia virginica to appear to taper more gradually than they actually do, leading to misidentification as B. paniculata.

Selected References

None.

Lower Taxa

None.
... more about "Bartonia virginica"
James S. Pringle +
(Linnaeus) Britton +
Sagina virginica +
Yellow or Virginia or late-flowering bartonia +, yellow screwstem +  and bartonie de Virginie +
St. Pierre and Miquelon +, N.B. +, N.S. +, Ont. +, Que. +, Ala. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Ill. +, Ind. +, Ky. +, La. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Miss. +, N.H. +, N.J. +, N.Y. +, N.C. +, Ohio +, Pa. +, R.I. +, S.C. +, Tenn. +, Vt. +, Va. +, W.Va. +  and Wis. +
0–500 m. +
Bogs, shores, mesic to wet, open woods, usually peaty soils. +
Flowering late summer–fall. +
Sterns & Poggenburg, Prelim. Cat., +
Bartonia tenella +
Bartonia virginica +
Bartonia +
species +