Linaria purpurea |
Linaria grandiflora |
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purple toad flax |
large-flower linaria, large-flower toadflax |
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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, (30–)60–74(–100) cm; sterile stems to 13.5 cm. |
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, 12–48(–65) × 3–18(–30) mm, apex acute. |
Racemes | 1–117-flowered, dense; bracts linear, 2–5(–5.5) × 0.3–1 mm. |
1–36-flowered, dense in flower, lax in fruit; bracts ovate to lanceolate, 7–14(–20) × 2–7 mm. |
Pedicels | erect, 1–3 mm in flower, 2–4(–5) mm in fruit. |
erect-patent to erect, (0.5–)2–6(–15) mm in flower, 4–15(–21) mm in fruit. |
Styles | simple; stigma entire. |
simple; stigma entire. |
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, (40–)41–52 mm; tube (6–)7.5–12 mm wide, spurs straight or curved, 19–22(–23) mm, slightly shorter or subequal to rest of corolla, abaxial lip sinus 2.5–3.5(–4) mm, adaxial lip sinus 4–6 mm. |
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, sometimes ovate-lanceolate, 7–14 × 3.5–7 mm in flower, 7–14 × 3.5–9 mm in fruit, apex acute. |
Capsules | subglobular, 2.7–4 × 2.5–3.7 mm, glabrous; loculi equal. |
globular, 6–8(–11) × 6–10.7 mm, glabrous; loculi equal. |
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. |
black, subtrigonous or tetrahedral, 0.9–1.5 mm, with longitudinal acute marginal ridges and anastomosed acute ridges on faces; wing absent. |
2n | = 12 (Europe). |
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Linaria purpurea |
Linaria grandiflora |
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Phenology | Flowering Jun–Oct. | Flowering Jul–Sep. |
Habitat | Disturbed places, railroad rights-of-way, beach foreshores. | Roadsides, disturbed places. |
Elevation | 0–1900 m. (0–6200 ft.) | 600–2100 m. (2000–6900 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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CO; ID; WA; se Europe; sw Asia [Introduced in North America] |
Discussion | Linaria grandiflora is closely related to L. dalmatica and sometimes has been included within L. dalmatica. One specimen collected in Washington (Kittitas County, west of Cle Elum, 18 June 1962, C. L. Hitchcock & C. V. Muhlick 22329, NY) exhibits discordant features (for example, pedicels 15–21 mm). According to D. A. Sutton (1988), L. grandiflora bears pedicels 0.5–4 mm, although he indicated that plants called L. pancicii Janka (which were included in the synonymy of L. grandiflora) have long pedicels. For the rest of the characteristics (corolla size, adaxial lip sinus length, calyx lobe size and shape), that specimen is fairly assimilable in L. grandiflora. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Source | FNA vol. 17, p. 31. | FNA vol. 17, p. 30. |
Parent taxa | Plantaginaceae > Linaria | Plantaginaceae > Linaria |
Sibling taxa | ||
Synonyms | Antirrhinum purpureum | |
Name authority | (Linnaeus) Miller: Gard. Dict. ed. 8, Linaria no. 5. (1768) | Desfontaines: Ann. Mus. Natl. Hist. Nat. 11: 51, plate 2. (1808) |
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