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sea purslane, sea-beach sandwort, seaside sandplant, seaside-sandwort

Habit Plants maritime, glabrous; rhizomes spreading.
Stems

simple or branched, 5–25(–50) cm.

Leaf

blades usually long-elliptic to ovate, sometimes lanceolate to oblanceolate, obovate, or broadly elliptic, 4–46 × 0.5–20 mm, succulent, margins often crenulate, apex acute to acuminate or apiculate.

Pedicels

2–10(–26) mm.

Flowers

strongly honey-scented;

sepals ovate, 3.5–7 mm;

petals spatulate to narrowly oblanceolate, abruptly constricted toward base, 2.5–6 mm in staminate flowers, 0.8–2 mm in pistillate flowers;

filaments 2.5–5 mm in staminate flowers;

anthers 0.5–0.7 mm, 0.5–0.8 mm in pistillate flowers.

Capsules

ovoid to subglobose, 5–10 × (4.5–)5–12 mm, fleshy or chartaceous.

Seeds

2–4 mm, rugulose.

2n

= 66, 68, 70.

Honckenya peploides

Distribution
from FNA
AK; CT; MA; MD; ME; NH; NJ; NY; OR; WA; BC; MB; NB; NF; NS; NT; NU; ON; PE; QC; YT; Coastal North America; Eurasia
[WildflowerSearch map]
[BONAP county map]
Discussion

Subspecies 4 (3 in the flora).

Honckenya peploides is polymorphic. A number of species and infraspecific taxa have been described from various parts of its geographical range. Recently, four subspecies of H. peploides have been recognized (A. Kurtto 2001b; V. V. Petrovsky 1971, 2000), as here; subsp. peploides occurs along European coasts. Honckenya is subdioecious (Petrovsky 1971, 2000; T. Tsukui and T. Sugawara 1992), and is pollinated largely by small bees, hover-flies, flies, and ants (Tsukui and Sugawara). The report of Honckenya (as Ammodenia) in Chile is an error based on G. Macloskie (1903–1914, vol. 1) (C. Marticorena, pers. comm.).

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Key
1. Plants stout; stems 3-6 mm diam., ascending to weakly erect; pedicels 2-3 mm
subsp. robusta
1. Plants slender; stems 0.5-3 mm diam., prostrate to decumbent; pedicels 3-26 mm
→ 2
2. Stems 10-30(-50) cm × 1-3 mm, few; internodes of main stem 8-40(-60) mm; main stem leaves widely spaced, conspicuously larger than those of lateral branches, blade elliptic-obovate to broadly elliptic or narrowly elliptic or oblanceolate, (10-)20-46 × (0.5-)10-20 mm; pedicels (3-)8-16(-26) mm
subsp. major
2. Stems 5-15(-21) cm × 0.5-2.5 mm, numerous; internodes of main stem 5-30 mm; main stem leaves evenly spaced, similar in size to those of lateral branches, blade elliptic or ovate to obovate, 4-20(-30) × 3-9(-18) mm; pedicels 3-10(-15) mm
subsp. diffusa
Source FNA vol. 5, p. 139.
Parent taxa Caryophyllaceae > subfam. Alsinoideae > Honckenya
Subordinate taxa
H. peploides subsp. diffusa, H. peploides subsp. major, H. peploides subsp. robusta
Synonyms Arenaria peploides
Name authority (Linnaeus) Ehrhart: Neues Mag. Aerzte 5: 206. (1783)
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