Plantago helleri |
Plantago hookeriana |
|
---|---|---|
Heller's plantain |
California plantain, Hooker's plantain, tallow weed |
|
Habit | Annuals; roots taproots, slender. | Annuals; roots taproots, slender. |
Stems | 0–12 mm. |
0–10 mm. |
Leaves | 50–130 × 3–7 mm; blade linear, margins entire, veins conspicuous or not, surfaces villous, adaxial rarely glabrous. |
60–120 × 4–10 mm; blade linear, margins toothed (teeth to 4 mm), rarely entire, veins conspicuous or not, surfaces villous or sericeous. |
Scapes | 80–250 mm, hairy, hairs patent, long and antrorse, short. |
280–580 mm, hairy, hairs antrorse, long and short. |
Spikes | 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. |
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. |
Flowers | sepals 3.5–4 mm; corolla radially symmetric, lobes reflexed, 3–3.6 mm, base slightly cordate; stamens 4, connective elongated, apex acute. |
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. |
Seeds | 2, 3.2–3.8 mm. |
2, 2.4–3.4 mm. |
2n | = 20. |
= 20. |
Plantago helleri |
Plantago hookeriana |
|
Phenology | Flowering spring. | Flowering spring. |
Habitat | Dry slopes and flats on limestone. | Sandy soils, disturbed areas. |
Elevation | 100–1700 m. (300–5600 ft.) | 0–1300 m. (0–4300 ft.) |
Distribution |
NM; TX
|
LA; MS; TX; Mexico (Chihuahua, Coahuila, Nuevo León, Tamaulipas)
|
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 | ||
Synonyms | P. hookeriana var. nuda | |
Name authority | Small: Bull. New York Bot. Gard. 1: 288. (1899) | Fischer & C. A. Meyer: Index Seminum (St. Petersburg) 1838: 39. (1839) |
Web links |