Plantago wrightiana |
Plantago canescens |
|
---|---|---|
Wright's plantain |
arctic plantain, gray-pubescent plantain, Siberian plantain |
|
Habit | Annuals; roots taproots, slender. | Perennials; caudex usually woolly; roots taproots, thick. |
Stems | 10–40 mm. |
0–20 mm. |
Leaves | 60–160 × 3–5 mm; blade linear, margins entire, veins conspicuous or not, abaxial surface villous, adaxial glabrous, rarely sparsely villous. |
ascending, 180–250 × 6–20 mm; blade linear to lanceolate or oblanceolate, margins entire, rarely toothed, veins conspicuous, surfaces glabrate or hairy, hairs 1 mm. |
Scapes | 800–1600 mm, hairy, hairs antrorse, long and short. |
50–230 mm, not groove-angled, hairy or glabrous. |
Spikes | greenish or brownish, (20–)150–250 mm, densely flowered, flowers in whorls or pairs; bracts ovate or triangular, 1–3.5 mm, length 0.4–0.8 times sepals. |
grayish or whitish, 80–350 mm, usually densely flowered, shiny; corolla lobes of neighboring flowers often overlapping; bracts broadly ovate, 1.8–2 mm, length 0.9–1 times sepals. |
Flowers | sepals 3–4 mm; corolla bilaterally symmetric, lobes reflexed, adaxials 2.4–3 mm, laterals asymmetric, base cordate; stamens 4, connective elongated, apex acute. |
sepals 2 mm, adaxial 2 nearly distinct; corolla radially symmetric, lobes reflexed, 2 mm, base obtuse; stamens 4. |
Seeds | 2, 2.8–3.2 mm. |
3–7, 1–1.8 mm. |
2n | = 20. |
= 12. |
Plantago wrightiana |
Plantago canescens |
|
Phenology | Flowering summer. | Flowering summer. |
Habitat | Sandy and gravelly soils, roadsides. | Grassy, gravelly, and rocky slopes, cliffs. |
Elevation | 0–1000(–1300) m. (0–3300(–4300) ft.) | 0–2000 m. (0–6600 ft.) |
Distribution |
AL; AR; AZ; FL; GA; KS; KY; LA; MD; MS; NC; NM; OK; SC; TN; TX; VA; WV; Mexico (Chihuahua, Durango)
|
AK; MT; AB; BC; NT; NU; YT; Asia |
Discussion | N. N. Tzvelev (1983) recognized six subspecies (including two in North America) within Plantago canescens; North American material is not segregated as such here. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 17, p. 293. | FNA vol. 17, p. 285. |
Parent taxa | Plantaginaceae > Plantago | Plantaginaceae > Plantago |
Sibling taxa | ||
Synonyms | P. septata | |
Name authority | Decaisne: in A. P. de Candolle and A. L. P. P. de Candolle, Prodr. 13(1): 712. (1852) | Adams: Nouv. Mém. Soc. Imp. Naturalistes Moscou 9: 233, plate 13, fig. 1. (1834) |
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