Plantago indica |
Plantago aristata |
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plantain des sables, sand plantain |
bottlebrush indianwheat, bract plantain, bristly plantain, large bract plantain |
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Habit | Annuals; roots taproots, slender. | Annuals; roots taproots, slender. |
Stems | 100–350 mm, freely branched. |
20–40 mm. |
Leaves | cauline, opposite, 60–80 × 1–3 mm; blade linear to linear-lanceolate, margins entire or toothed, veins conspicuous or not, surfaces hairy. |
30–200 × 3–7 mm; blade linear or narrowly lanceolate, margins entire, rarely toothed, veins conspicuous or not, abaxial surface villous, adaxial glabrous or sparsely villous. |
Scapes | 100–650 mm, hairy. |
100–500 mm, hairy, hairs antrorse, long and short. |
Spikes | greenish or brownish, (50–)150–250 mm, densely flowered, eglandular; bracts proximal strongly differing from distal, ovate, 2–5(–7) mm, length 1–1.5 times sepals, proximal bracts: apex acute. |
greenish or brownish, 80–150 mm, densely flowered, flowers in whorls or pairs; bracts almost linear, 15–30 mm, length 2–12 times sepals. |
Flowers | sepals 2–3 mm; corolla radially symmetric, lobes reflexed, 2–4 mm, base obtuse; stamens 4. |
sepals 2.7–3.7 mm; corolla bilaterally symmetric, lobes reflexed, adaxials 1.4–2.3 mm, laterals symmetric, base deeply cordate; stamens 4, connective elongated, apex acute. |
Seeds | 2, 2–2.5 mm. |
2, 2.5–2.9 mm. |
2n | = 12. |
= 20. |
Plantago indica |
Plantago aristata |
|
Phenology | Flowering late summer–fall. | Flowering spring–fall. |
Habitat | Roadsides, railroads, sandy shorelines. | Roadsides, pastures, disturbed ground. |
Elevation | 0–200 m. (0–700 ft.) | 0–700 m. (0–2300 ft.) |
Distribution |
CA; CT; DE; IA; IL; IN; MA; ME; MI; MN; MO; NC; NH; NJ; NY; OH; OR; PA; VA; VT; WA; WI; BC; MB; ON; QC; Eurasia [Introduced in North America] |
AL; AR; CA; CT; DC; DE; FL; GA; IA; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; NC; NE; NH; NJ; NM; NY; OH; OK; OR; PA; RI; SC; SD; TN; TX; VA; VT; WA; WI; WV; NS; ON [Introduced in Central America, Europe, Asia]
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Discussion | While considering the proposal made by W. L. Applequist (2006) to reject Plantago psyllium, the Nomenclature Committee for Vascular Plants also decided that P. indica is a legitimate name (R. K. Brummitt 2009). A. B. Doweld and A. Shipunov (2017) published a proposal to reject P. indica in favor of P. arenaria. That proposal awaits a decision by that committee. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Plantago aristata is similar to P. patagonica; the latter is distinguished by its dense, villous indument. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 17, p. 288. | FNA vol. 17, p. 284. |
Parent taxa | Plantaginaceae > Plantago | Plantaginaceae > Plantago |
Sibling taxa | ||
Synonyms | P. arenaria, P. psyllium | P. patagonica var. aristata, P. purshii var. aristata |
Name authority | Linnaeus: Syst. Nat., ed. 10, 2: 896. 1759, legitimacy of — name in question | Michaux: Fl. Bor.-Amer. 1: 95. (1803) |
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