Description
Key Characters:
Growth Form:
Stems erect to ascending, much–branched to simple, 1–10.5 dm, farinose.
Stems:
Roots:
Leaves:
Leaves simple.
Alternate.
Leaves nonaromatic; blade narrowly to broadly lanceolate, rhombic, ovate, or triangular, 1.2–12(–15) × 0.5–7.5(–9) cm.
Apex acute to acuminate, farinose.
Base cuneate to truncate.
Margins serrate, irregularly dentate, or entire, often with 2 basal lobes.
Petioles 0.2–9 cm.
Stipules absent.
Flowers:
Inflorescences glomerules in compound spikes, 5–17 cm; glomerules irregularly rounded, 4–7 mm diam.; bracts absent.
Flowers bisexual.
Flowers: perianth segments 5, distinct nearly to base; lobes ovate to deltate, 0.7–1.5 × 0.7–1.3 mm, apex obtuse, farinose, often prominently keeled, covering fruit at maturity or not; stamens 5; stigmas 2, 0.3–0.5 mm.
Ovary superior; style 1 or absent; stigmas filiform.
Fruit:
Achenes or utricles depressed-ovoid; pericarp adherent or nonadherent near stylar base; alveolate-rugose.
Seeds round; 1–2 mm diam.; margins rounded; seed coat brown to black; honeycomb pitted.
Ploidy:
2n = 36
Habitat:
Elevation Range: