Honckenya peploides subsp. diffusa

(Hornemann) Hultén ex V. V. Petrovsky in A. I. Tolmatchew

in A. I. Tolmatchew, Fl. Arct. URSS 6: 71. 1971.

Basionym: Arenaria peploides var. diffusa Hornemann Fors. Oecon. Plantel. ed. 3, 1: 501. 1821
Synonyms: Arenaria diffusa (Hornemann) Wormsköjd Halianthus peploides var. diffusus (Hornemann) Lange Honckenya diffusa (Hornemann) Á. Löve & D. Löve Honckenya peploides var. diffusa (Hornemann) Ostenfeld
Treatment appears in FNA Volume 5. Treatment on page 139.

Plants with numerous stems, slender, succulent. Stems prostrate to decumbent, much-branched, 5–15 (–21) cm × 0.5–2.5 mm, internodes of main-stem 5–30 mm. Leaves: main-stem leaves evenly spaced, of similar size on all stems; blade elliptic or ovate to obovate, 4–20 (–30) × 3–9 (–18) mm, apex acute to apiculate. Pedicels 3–10 (–15) mm. Flowers: sepals ovate, 3.5–6 mm, apex apiculate. Capsules 7–10 × 8–12 mm, chartaceous. Seeds reddish to yellowish-brown, 2–4 mm, glossy. 2n = 66, 68, 70 (Asia).


Phenology: Flowering summer.
Habitat: Sea beaches, sandy flats, and dunes above high tide
Elevation: ± 0-10 m

Distribution

V5 284-distribution-map.gif

Greenland, Man., Nfld. and Labr. (Nfld.), N.W.T., Nunavut, Ont., Que., Yukon, Alaska, arctic Eurasia

Discussion

Selected References

None.

Lower Taxa

None.
70 +, 68 +  and 66 +
subperigynous +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.08 cm0.8 mm <br />8.0e-4 m <br />) +
Warren L. Wagner +
(Hornemann) Hultén ex V. V. Petrovsky in A. I. Tolmatchew +
Arenaria peploides var. diffusa +
Laciniate (?) +, Emarginate (?) +, Jagged (?) +, 2-fid (?) +  and Entire (?) +
obscurely +  and 1-veined +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.9 cm9 mm <br />0.009 m <br /> (1.8 cm18 mm <br />0.018 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (2 cm20 mm <br />0.02 m <br />) +
ovate +  and obovate +
3mm;9mm +
reduced +
herbaceous +  and scarious +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (?) +  and 1 cm10 mm <br />0.01 m <br /> (?) +
ovoid;subglobose +
chartaceous +  and fleshy +
0.8 cm8 mm <br />0.008 m <br /> (?) +  and 1.2 cm12 mm <br />0.012 m <br /> (?) +
1-6-flowered +
dish--shaped +
expanded +
Greenland +, Man. +, Nfld. and Labr. (Nfld.) +, N.W.T. +, Nunavut +, Ont. +, Que. +, Yukon +, Alaska +  and arctic Eurasia +
± 0-10 m +
straight +  and curved +
central +  and peripheral +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
pistillate +  and staminate +
honey-scented +
inconspicuous +
, +  and unisexual +
branched +  and simple +
4-angled +  and terete +
stalked +  and simple +
Sea beaches, sandy flats, and dunes above high tide +
disc--shaped +  and dish +
leafy +  and open +
0.5 cm5 mm <br />0.005 m <br /> (3 cm30 mm <br />0.03 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (4.6 cm46 mm <br />0.046 m <br />) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (2 cm20 mm <br />0.02 m <br />) +
connate +
membranous +
crenulate +
large +
swollen +
3 +  and 5 +
crassinucellate +  and bitegmic +
campylotropous +
1 cm10 mm <br />0.01 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (1 cm10 mm <br />0.01 m <br />) +
subperigynous +
fugacious +
constricted +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Flowering summer. +
in A. I. Tolmatchew, Fl. Arct. URSS +
rugulose +
compressed +  and obovate +
persistent +
distinct +
enlarged +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
reduced +
Illustrated +
much-branched +
prostrate +  and decumbent +
5cm;15cm +
prostrate;ascending or erect +
prostrate to decumbent +
5 cm50 mm <br />0.05 m <br /> (25 cm250 mm <br />0.25 m <br />) +
0.5mm;2.5mm +
[30 +, 3 +  and 5 +
papillate +
distinct +
3 (?) +  and 5 (?) +
filiform +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Arenaria diffusa +, Halianthus peploides var. diffusus +, Honckenya diffusa +  and Honckenya peploides var. diffusa +
Honckenya peploides subsp. diffusa +
Honckenya peploides +
subspecies +
divided +
10 +  and 8 +