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Tweedy's plantain

Alaska plantain, seashore plantain

Habit Perennials; caudex well developed, conspicuous, glabrous; roots taproots, thick. Perennials; caudex well developed, conspicuous, glabrous; roots fibrous, thick.
Stems

0–20 mm.

0–20 mm.

Leaves

40–200 × 10–30 mm;

blade lanceolate-spatulate to narrowly ovate, margins entire, sometimes toothed, veins conspicuous, surfaces usually glabrous.

(80–)100–400(–550) × (5–)10–35(–40) mm;

blade oblanceolate or almost linear, margins entire, veins conspicuous, 4 or 5, surfaces glabrous.

Scapes

25–200 mm, slightly surpassing leaves, glabrous.

300–400 mm, glabrous or sparsely hairy, becoming densely so distally.

Spikes

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.

greenish or brownish, 350–450 mm, loosely flowered;

bracts ovate to deltate, 3–4 mm, length 1.5–2.5 times sepals.

Flowers

sepals 2–2.5 mm;

corolla radially symmetric, lobes spreading, 1 mm, base obtuse;

stamens 4.

sepals 1.5–2 mm;

corolla radially symmetric, lobes spreading, 1.5–2 mm, base obtuse;

stamens 4.

Fruits

ovoid, indehiscent or dehiscence not circumscissile.

Seeds

3 or 4, 2–2.3 mm.

1 or 2, 4–5 mm.

2n

= 24.

= 24.

Plantago tweedyi

Plantago macrocarpa

Phenology Flowering summer. Flowering late spring–early summer.
Habitat Grasslands, sagebrush steppes, montane and subalpine meadows. Wet places, tidal marshes, saline areas.
Elevation 1600–4000 m. (5200–13100 ft.) 0–700 m. (0–2300 ft.)
Distribution
from FNA
AZ; CO; ID; MT; NM; UT; WY
[WildflowerSearch map]
[BONAP county map]
from FNA
AK; OR; WA; BC; Asia
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[BONAP county map]
Discussion

Plantago macrocarpa has been documented along the Pacific coast south to the mouth of the Yachats River in Oregon.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 17, p. 293. FNA vol. 17, p. 289.
Parent taxa Plantaginaceae > Plantago Plantaginaceae > Plantago
Sibling taxa
P. afra, P. argyrea, P. aristata, P. australis, P. canescens, P. cordata, P. coronopus, P. elongata, P. erecta, P. eriopoda, P. firma, P. floccosa, P. helleri, P. heterophylla, P. hookeriana, P. indica, P. lanceolata, P. macrocarpa, P. major, P. maritima, P. media, P. ovata, P. patagonica, P. pusilla, P. rhodosperma, P. rugelii, P. sempervirens, P. sparsiflora, P. subnuda, P. virginica, P. wrightiana
P. afra, P. argyrea, P. aristata, P. australis, P. canescens, P. cordata, P. coronopus, P. elongata, P. erecta, P. eriopoda, P. firma, P. floccosa, P. helleri, P. heterophylla, P. hookeriana, P. indica, P. lanceolata, P. major, P. maritima, P. media, P. ovata, P. patagonica, P. pusilla, P. rhodosperma, P. rugelii, P. sempervirens, P. sparsiflora, P. subnuda, P. tweedyi, P. virginica, P. wrightiana
Name authority A. Gray: in A. Gray et al., Syn. Fl. N. Amer. ed. 2, 2(1): 390. (1886) Chamisso & Schlechtendal: Linnaea 1: 166. (1826)
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