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FNA | Family List | FNA Vol. 26 | Haemodoraceae | Lachnanthes

1. Lachnanthes caroliniana (Lamarck) Dandy, J. Bot. 70: 329. 1932.

Dilatris caroliniana Lamarck in J. Lamarck and J. Poiret, Tabl. Encycl. 1: 127. 1791 (as caroliana); Heritiera tinctorum J. F. Gmelin; Lachnanthes tinctoria (J. F. Gmelin) Elliott

Stems 3–10.5 dm, distally whitish villous-tomentose when young, becoming tawny-hoary. Leaves: basal leaves 15–45 × 0.5–2.1 cm proximally, shorter distally; cauline leaves shorter than basal, decreasing in size distally, becoming bracts in inflorescence. Inflorescences initially rounded, becoming open and corymbose after anthesis, each branch resembling a helicoid cyme. Flowers: tepals erect-spreading at anthesis, pale yellow, 7–9 × 1–1.5 mm, densely pubescent abaxially, persisting and incurving to form beak around fruit; stamens spreading at anthesis; filaments 8–10 mm; anthers yellow; style persistent, slightly exceeding anthers, 10–13 mm. Capsules globose or oblate, 3–5 mm diam. Seeds reddish brown, 2.5–3 mm diam., faintly wrinkled. 2n = 48.

Flowering mid--late summer. Wet, acid, often sandy soil of bogs, swamps, ditches, low areas in savannas and pinelands, margins of hammocks and pocosins; 0--600 m; N.S.; Ala., Conn., Del., Fla., Ga., La., Md., Mass., Miss., N.J., N.Y., N.C., R.I., S.C., Tenn., Va.; West Indies (Cuba).

Lachnanthes caroliniana is sometimes a serious weed in commercial cranberry bogs.


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