Linaria purpurea |
Linaria dalmatica |
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purple toad flax |
Dalmatian toadflax, dalmation toadflax, linaire á feuilles larges |
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Habit | Perennials, from taproot, not reproducing vegetatively by stolons. | Perennials, reproducing vegetatively by adventitious buds or stolons. | ||||
Fertile stems | erect or suberect, to 71(–140) cm; sterile stems to 18 cm. |
erect, 49–150 cm; sterile stems to 15 cm. |
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Leaves | of fertile stems: blade oblanceolate to linear, usually flat, 5–45(–60) × 0.8–4(–8) mm, apex acute or subobtuse. |
of fertile stems: blade ovate to lanceolate, flat, 10–65 × 3–31 mm, apex acute. |
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Racemes | 1–117-flowered, dense; bracts linear, 2–5(–5.5) × 0.3–1 mm. |
1–35-flowered, lax or dense; bracts ovate to lanceolate, 3–20 × 2–12 mm. |
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Pedicels | erect, 1–3 mm in flower, 2–4(–5) mm in fruit. |
erect-patent to erect, 3–22 mm in flower, 4–32 mm in fruit. |
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Styles | simple; stigma entire. |
simple; stigma entire. |
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Corollas | violet to purple, with yellow or lilac palate, 9–13(–17) mm; tube 1.5–2.5 mm wide, spurs curved, 5–7(–9) mm, subequal to rest of corolla, abaxial lip sinus (0.6–)0.8–1.5(–2) mm, adaxial lip sinus 1 mm. |
pale to bright yellow, (27–)28–49 mm; tube 6–11 mm wide, spurs straight or curved, 11–30 mm, slightly shorter, subequal to, or longer than rest of corolla, abaxial lip sinus (1.8–)2–2.5 mm, adaxial lip sinus 2–3.5(–4) mm. |
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Calyx | lobes linear to linear-lanceolate, 1.5–3 × 0.5–1 mm in flower, 2–3.5 × 0.7–1.2 mm in fruit, apex acute or subacute. |
lobes ovate to linear-lanceolate, (1.9–)3–9.5 × (0.9–)1–3.5 mm in flower, 4–10(–13) × 1.5–5 mm in fruit, apex acute. |
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Capsules | subglobular, 2.7–4 × 2.5–3.7 mm, glabrous; loculi equal. |
subglobular, 4–7 × 4–7 mm, glabrous; loculi equal, rarely subequal. |
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Seeds | black or blackish brown, subtrigonous or ± tetrahedral, 0.8–1.2 × 0.6–1 mm, with longitudinal marginal ridges and anastomosed ridges or tubercles on faces; wing absent. |
brown, brown-gray, or black, subtrigonous or ± tetrahedral, 1–2 × 0.8–1.6 mm, with longitudinal obtuse marginal ridges and anastomosed obtuse or truncate ridges on faces; wing absent. |
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2n | = 12 (Europe). |
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Linaria purpurea |
Linaria dalmatica |
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Phenology | Flowering Jun–Oct. | |||||
Habitat | Disturbed places, railroad rights-of-way, beach foreshores. | |||||
Elevation | 0–1900 m. (0–6200 ft.) | |||||
Distribution |
CA; OR; WA; BC; s Europe (Italy) [Introduced in North America; introduced also in s South America (Argentina), n Europe, Australia]
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AZ; CA; CO; CT; ID; IL; IN; KS; MA; ME; MI; MN; MT; ND; NE; NH; NM; NV; OH; OK; OR; PA; RI; SC; SD; UT; VT; WA; WY; AB; BC; MB; NB; NF; NS; ON; QC; SK; YT; Europe; sw Asia [Introduced in North America; introduced also in s South America (Argentina), Australia]
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Discussion | Subspecies 2 (2 in the flora). Linaria dalmatica was originally introduced into North America as an ornamental plant and is currently classified as a noxious weed in seven states in the United States and two Canadian provinces (https://plants.usda.gov/core/profile?symbol=LIDA). Subspecies of Linaria dalmatica can be difficult to recognize because characteristics partly overlap and intermediate specimens may be found. Linaria genistifolia and L. dalmatica are closely related, and the latter is sometimes treated as a subspecies of L. genistifolia by several authors. Although further research is required in this species complex (including L. grandiflora, among others), the author recognizes L. genistifolia and L. dalmatica as independent species. Nevertheless, published references to L. genistifolia could in fact correspond to L. dalmatica. In order to obtain a conclusive identification for either species, it is necessary to study flowering specimens. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 17, p. 31. | FNA vol. 17, p. 29. | ||||
Parent taxa | Plantaginaceae > Linaria | Plantaginaceae > Linaria | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Synonyms | Antirrhinum purpureum | Antirrhinum dalmaticum, L. genistifolia subsp. dalmatica | ||||
Name authority | (Linnaeus) Miller: Gard. Dict. ed. 8, Linaria no. 5. (1768) | (Linnaeus) Miller: Gard. Dict. ed. 8, Linaria no. 13. (1768) | ||||
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