Lindernia dubia

(Linnaeus) Pennell

Monogr. Acad. Nat. Sci. Philadelphia 1: 141. 1935.

Common names: Yellowseed false-pimpernel lindernie douteuse
Basionym: Gratiola dubia Linnaeus Sp. Pl. 1: 17. 1753
Synonyms: Ilysanthes dubia (Linnaeus) Barnhart I. inaequalis (Walter) Pennell I. riparia Rafinesque Lindernia anagallidea (Michaux) Pennell L. dubia var. anagallidea (Michaux) Cooperrider L. dubia var. inundata (Pennell) Pennell L. dubia var. riparia (Rafinesque) Fernald
Treatment appears in FNA Volume 17. Treatment on page 355. Mentioned on page 354, 356.

Annuals. Stems erect, ascending, or prostrate, not matted, usually rooting at proximal nodes, 1.5–27(–38) cm. Leaves cauline, thin; petiole absent; blade spatulate, lanceolate, oblanceolate, elliptic, ovate, or obovate, (1–)5–37 × (0.5–)3–18 mm, palmately 3–5-veined or 1-nerved, not leathery, margins entire or remotely, sometimes coarsely, toothed; distal well developed or much reduced. Pedicels 0.5–31 mm, 1/2–5 times subtending leaves. Flowers chasmogamous or cleistogamous; chasmogamous: sepals 0.7–6.1 mm, connate to 1/8 lengths; corolla tube and adaxial lip lavender or blue to white, abaxial lobes white with purple to blue markings, tube 2.5–8 mm, adaxial lip 1/2 abaxial; stamens 2; staminodes each with appendage and distal segment. Capsules ellipsoid, often obliquely, sometimes ovoid or subglobular, 1.4–6.3(–7.5) × 1.2–3.3 mm. Seeds usually 6-angled, usually ribbed. 2n = 18.

Phenology: Flowering year-round.
Habitat: Wet ditches, meadows, borders of ponds, lakes, streams, moist to wet disturbed habitats.
Elevation: 0–2600 m.


B.C., N.B., N.S., Ont., P.E.I., Que., Ala., Ariz., Ark., Calif., Colo., Conn., Del., D.C., Fla., Ga., Idaho, Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Mich., Minn., Miss., Mo., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.C., N.Dak., Ohio, Okla., Oreg., Pa., R.I., S.C., S.Dak., Tenn., Tex., Vt., Va., Wash., W.Va., Wis., Mexico, West Indies, Central America, South America, introduced in Europe, Asia, Africa, Australia.


In Asia, Lindernia dubia is considered a noxious weed in rice paddies, where it has become resistant to some commonly used herbicides.

Lindernia dubia shows extreme morphological plasticity, especially in vegetative characters. This has led to the naming of species and varieties that have been accepted or not in recent treatments (for example, D. Q. Lewis 2000). B. A. Berger (2005) examined variation within the L. dubia complex and concluded that the recognition of these taxa is unwarranted.

Variety inundata, an estuarine form from the intertidal zone along the Atlantic Coast, continues to be recognized in several databases. However, W. R. Ferren Jr. and A. E. Schuyler (1980) described the clinal variation in these intertidal populations, ranging from typical Lindernia dubia to this form, with such variation sometimes evident on submerged and emergent parts of the same plant.

Selected References


Lower Taxa

... more about "Lindernia dubia"
Deborah Q. Lewis +
(Linnaeus) Pennell +
Gratiola dubia +
Yellowseed false-pimpernel +  and lindernie douteuse +
B.C. +, N.B. +, N.S. +, Ont. +, P.E.I. +, Que. +, Ala. +, Ariz. +, Ark. +, Calif. +, Colo. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Idaho +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Miss. +, Mo. +, Nebr. +, Nev. +, N.H. +, N.J. +, N.Mex. +, N.Y. +, N.C. +, N.Dak. +, Ohio +, Okla. +, Oreg. +, Pa. +, R.I. +, S.C. +, S.Dak. +, Tenn. +, Tex. +, Vt. +, Va. +, Wash. +, W.Va. +, Wis. +, Mexico +, West Indies +, Central America +, South America +, introduced in Europe +, Asia +, Africa +  and Australia. +
0–2600 m. +
Wet ditches, meadows, borders of ponds, lakes, streams, moist to wet disturbed habitats. +
Flowering year-round. +
Monogr. Acad. Nat. Sci. Philadelphia +
Weedy +  and Illustrated +
Ilysanthes dubia +, I. inaequalis +, I. riparia +, Lindernia anagallidea +, L. dubia var. anagallidea +, L. dubia var. inundata +  and L. dubia var. riparia +
Lindernia dubia +
Lindernia +
species +