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slender plantain

Alaska plantain, seashore plantain

Habit Annuals; roots taproots, slender. Perennials; caudex well developed, conspicuous, glabrous; roots fibrous, 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.

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

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

Scapes

5–60 mm, hairy, sometimes glabrous.

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

Spikes

greenish or brownish, 50–150 mm, loosely or densely flowered;

bracts ovate, 2 mm, length 0.9–1.1 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 mm;

corolla radially symmetric, lobes spreading, 0.5–1 mm, base obtuse;

stamens 2.

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

10–25(–30), 0.5–0.8 mm.

1 or 2, 4–5 mm.

2n

= 12.

= 24.

Plantago heterophylla

Plantago macrocarpa

Phenology Flowering spring–early summer. Flowering late spring–early summer.
Habitat Moist sandy soils. Wet places, tidal marshes, saline areas.
Elevation 0–200 m. (0–700 ft.) 0–700 m. (0–2300 ft.)
Distribution
from FNA
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)]
[WildflowerSearch map]
[BONAP county map]
from FNA
AK; OR; WA; BC; Asia
[WildflowerSearch map]
[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. 287. 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. 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. tweedyi, 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 Nuttall: Trans. Amer. Philos. Soc., n.s. 5: 177. (1835) Chamisso & Schlechtendal: Linnaea 1: 166. (1826)
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