The green links below add additional plants to the comparison table. Blue links lead to other Web sites.
enable glossary links

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
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
AZ; CO; ID; MT; NM; UT; WY
[WildflowerSearch map]
[BONAP county map]
Source FNA vol. 17, p. 287. FNA vol. 17, p. 293.
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. 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
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