Plantago hookeriana |
Plantago cordata |
|
---|---|---|
California plantain, Hooker's plantain, tallow weed |
heart-leaf plantain |
|
Habit | Annuals; roots taproots, slender. | Perennials; caudex well developed, conspicuous, glabrous; roots fibrous, thick. |
Stems | 0–10 mm. |
0–20 mm. |
Leaves | 60–120 × 4–10 mm; blade linear, margins toothed (teeth to 4 mm), rarely entire, veins conspicuous or not, surfaces villous or sericeous. |
100–300 × 80–200 mm; petiole to 300 mm; blade broadly oval to cordate-ovate, margins entire, veins conspicuous, laterals branching from midvein distal to base, surfaces glabrous. |
Scapes | 280–580 mm, hairy, hairs antrorse, long and short. |
200–300 mm, glabrous. |
Spikes | greenish or brownish, 50–180 mm, densely flowered, flowers in whorls or pairs; bracts ovate or triangular, 1.5–6 mm, length 0.6–1.4 times sepals, apex acute or acuminate. |
brownish or greenish, 100–500 mm, loosely flowered, rachis visible between flowers; bracts round-ovate, 2 mm, length 0.8–1 times sepals. |
Flowers | sepals 2.5–4 mm; corolla bilaterally symmetric, abaxial and lateral lobes reflexed, adaxial erect, 2.2–2.5 mm, base slightly cordate; stamens 4, connective significantly elongated, apex acute. |
sepals 2–2.5 mm; corolla radially symmetric, lobes spreading, 2–2.5 mm, base obtuse; stamens 4. |
Seeds | 2, 2.4–3.4 mm. |
2–4, 2.5–3.5 mm. |
2n | = 20. |
= 24. |
Plantago hookeriana |
Plantago cordata |
|
Phenology | Flowering spring. | Flowering late spring–early summer. |
Habitat | Sandy soils, disturbed areas. | Rocky or gravelly beds of shallow, slow-moving streams, sloughs, swamps. |
Elevation | 0–1300 m. (0–4300 ft.) | 0–200 m. (0–700 ft.) |
Distribution |
LA; MS; TX; Mexico (Chihuahua, Coahuila, Nuevo León, Tamaulipas)
|
AL; AR; DC; FL; GA; IA; IL; IN; KY; MD; MI; MO; MS; NC; NY; OH; TN; VA; WI; ON
|
Discussion | Plantago cordata is listed as federally endangered in Canada and is in the Center for Plant Conservation’s National Collection of Endangered Plants. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
|
Source | FNA vol. 17, p. 287. | FNA vol. 17, p. 285. |
Parent taxa | Plantaginaceae > Plantago | Plantaginaceae > Plantago |
Sibling taxa | ||
Synonyms | P. hookeriana var. nuda | |
Name authority | Fischer & C. A. Meyer: Index Seminum (St. Petersburg) 1838: 39. (1839) | Lamarck: in J. Lamarck and J. L. M. Poiret, Tabl. Encycl. 1: 338. (1792) |
Web links |