Plantago heterophylla |
Plantago tweedyi |
|
---|---|---|
slender plantain |
Tweedy's plantain |
|
Habit | Annuals; roots taproots, slender. | Perennials; caudex well developed, conspicuous, glabrous; roots taproots, thick. |
Stems | 0–10 mm. |
0–20 mm. |
Leaves | 30–80 × 1–4 mm; blade linear, margins lobed, rarely entire, veins conspicuous or not, surfaces hairy, sometimes glabrous. |
40–200 × 10–30 mm; blade lanceolate-spatulate to narrowly ovate, margins entire, sometimes toothed, veins conspicuous, surfaces usually glabrous. |
Scapes | 5–60 mm, hairy, sometimes glabrous. |
25–200 mm, slightly surpassing leaves, glabrous. |
Spikes | greenish or brownish, 50–150 mm, loosely or densely flowered; bracts ovate, 2 mm, length 0.9–1.1 times sepals. |
brownish or greenish, 45–250 mm, densely flowered, rachis not clearly visible between flowers; bracts broadly ovate, 2 mm, length 0.8–1 times sepals. |
Flowers | sepals 2 mm; corolla radially symmetric, lobes spreading, 0.5–1 mm, base obtuse; stamens 2. |
sepals 2–2.5 mm; corolla radially symmetric, lobes spreading, 1 mm, base obtuse; stamens 4. |
Seeds | 10–25(–30), 0.5–0.8 mm. |
3 or 4, 2–2.3 mm. |
2n | = 12. |
= 24. |
Plantago heterophylla |
Plantago tweedyi |
|
Phenology | Flowering spring–early summer. | Flowering summer. |
Habitat | Moist sandy soils. | Grasslands, sagebrush steppes, montane and subalpine meadows. |
Elevation | 0–200 m. (0–700 ft.) | 1600–4000 m. (5200–13100 ft.) |
Distribution |
AL; AR; DE; FL; GA; IL; KS; KY; LA; MD; MO; MS; NC; NJ; NY; OK; PA; SC; TN; TX; VA [Introduced in South America (Argentina)]
|
AZ; CO; ID; MT; NM; UT; WY
|
Source | FNA vol. 17, p. 287. | FNA vol. 17, p. 293. |
Parent taxa | Plantaginaceae > Plantago | Plantaginaceae > Plantago |
Sibling taxa | ||
Name authority | Nuttall: Trans. Amer. Philos. Soc., n.s. 5: 177. (1835) | A. Gray: in A. Gray et al., Syn. Fl. N. Amer. ed. 2, 2(1): 390. (1886) |
Web links |