Neues Mag. Aerzte 5: 206. 1783.

Common names: Seaside sandwort sea purslane
Etymology: for Gerhard August Honckeny, 1724–1805, German botanist
Synonyms: Adenarium Rafinesque Ammonalia Desvaux Halianthus Fries
Treatment appears in FNA Volume 5. Treatment on page 137. Mentioned on page 7, 139.

Herbs, perennial, forming large mats or clumps by leafy rhizomes; rhizomes fleshy, often with prominent nodal buds and small membranous leaves. Taproots slender. Stems prostrate to decumbent, flowering stems ascending or weakly erect, simple or branched, terete or weakly 4-angled. Leaves not basally connate, sessile; blade 1-veined or obscurely so, usually elliptic to ovate, less commonly lanceolate to oblanceolate, obovate, or broadly elliptic, succulent, apex acute to acuminate or apiculate. Inflorescences terminal, open, leafy, 1–6-flowered cymes or axillary and flowers solitary; bracts paired, foliaceous. Pedicels erect. Flowers functionally unisexual or, occasionally, staminate plants also with some bisexual; perianth and androecium subperigynous; hypanthium minimal; sepals 5(–6), distinct, green, narrowly ovate to elliptic, 3.5–7 mm, herbaceous, margins pale, scarious, apex obtuse or acute to apiculate, not hooded; petals absent or 5(–6), white, base clawed, blade apex emarginate; nectaries at base of filaments opposite sepals enlarged on both sides of filament, slightly reduced in pistillate flowers; stamens 10, fertile in staminate flowers, fewer or abortive in pistillate flowers, arising from rim of very brief hypanthium disc; filaments distinct; staminodes absent; styles (2–)3–5(–6), filiform, 1–2 mm, shorter and erect in staminate flowers, glabrous proximally; stigmas (2–)3–5(–6), linear along adaxial surface of styles, minutely papillate (30×). Capsules globose, inflated, opening by 3 spreading valves; carpophore absent. Seeds 3–15, reddish brown to dark reddish or yellowish brown, narrowly to broadly obovate, laterally compressed, smooth to minutely papillate, marginal wing absent, appendage absent. x = 15.


Temperate and arctic North America, n Eurasia.


Species 1.

The resemblance in habit between Honckenya and Wilhelmsia previously presumed to represent convergence has proven to indicate a close relationship based on recent molecular studies (M. Nepokroeff et al., unpubl.).

Selected References


... more about "Honckenya"
Warren L. Wagner +
Ehrhart +
Seaside sandwort +  and sea purslane +
Temperate and arctic North America +  and n Eurasia. +
for Gerhard August Honckeny, 1724–1805, German botanist +
Neues Mag. Aerzte +
Adenarium +, Ammonalia +  and Halianthus +
Honckenya +
Caryophyllaceae subfam. Alsinoideae +