Plantago heterophylla |
Plantago helleri |
|
---|---|---|
slender plantain |
Heller's plantain |
|
Habit | Annuals; roots taproots, slender. | Annuals; roots taproots, slender. |
Stems | 0–10 mm. |
0–12 mm. |
Leaves | 30–80 × 1–4 mm; blade linear, margins lobed, rarely entire, veins conspicuous or not, surfaces hairy, sometimes glabrous. |
50–130 × 3–7 mm; blade linear, margins entire, veins conspicuous or not, surfaces villous, adaxial rarely glabrous. |
Scapes | 5–60 mm, hairy, sometimes glabrous. |
80–250 mm, hairy, hairs patent, long and antrorse, short. |
Spikes | greenish or brownish, 50–150 mm, loosely or densely flowered; bracts ovate, 2 mm, length 0.9–1.1 times sepals. |
greenish, whitish, or brownish, 50–120 mm, densely flowered, flowers in whorls or pairs; bracts triangular, 2.5–8 mm, length 0.6–2.2 times sepals. |
Flowers | sepals 2 mm; corolla radially symmetric, lobes spreading, 0.5–1 mm, base obtuse; stamens 2. |
sepals 3.5–4 mm; corolla radially symmetric, lobes reflexed, 3–3.6 mm, base slightly cordate; stamens 4, connective elongated, apex acute. |
Seeds | 10–25(–30), 0.5–0.8 mm. |
2, 3.2–3.8 mm. |
2n | = 12. |
= 20. |
Plantago heterophylla |
Plantago helleri |
|
Phenology | Flowering spring–early summer. | Flowering spring. |
Habitat | Moist sandy soils. | Dry slopes and flats on limestone. |
Elevation | 0–200 m. (0–700 ft.) | 100–1700 m. (300–5600 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)]
|
NM; TX
|
Discussion | Populations of Plantago helleri are concentrated in central Texas, especially in the Edwards Plateau and Trans-Pecos. The species also occurs in Eddy and Lincoln counties, New Mexico. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 17, p. 287. | FNA vol. 17, p. 287. |
Parent taxa | Plantaginaceae > Plantago | Plantaginaceae > Plantago |
Sibling taxa | ||
Name authority | Nuttall: Trans. Amer. Philos. Soc., n.s. 5: 177. (1835) | Small: Bull. New York Bot. Gard. 1: 288. (1899) |
Web links |