Honckenya peploides subsp. robusta

(Fernald) Hultén

Fl. Alaska Yukon 4: 677. 1944.

IllustratedEndemic
Basionym: Arenaria peploides var. robusta Fernald Rhodora 11: 114. 1909
Synonyms: Honckenya peploides var. robusta (Fernald) House
Treatment appears in FNA Volume 5. Treatment on page 140. Mentioned on page 139.

Plants with few stems, stout, succulent-coriaceous. Stems ascending to weakly erect, simple or few-branched, 15–50 cm × 3–6 mm, internodes of main-stem 10–55 mm. Leaves: main-stem leaves evenly spaced, of similar size on all stems; blade lanceolate to ovate, 12–28 × 7–15 mm, apex acuminate. Pedicels 2–3 mm. Flowers: sepals ovate, 4–7 mm, apex obtuse to acute. Capsules 5–8 × 5–10 mm, fleshy. Seeds dark reddish-brown, 2–4 mm, dull.


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

Distribution

V5 286-distribution-map.gif

N.B., Nfld. and Labr. (Nfld.), N.S., P.E.I., Que., Conn., Maine, Md., Mass., N.H., N.J., N.Y.

Discussion

Subspecies robusta is possibly extirpated from Delaware and Virginia and now listed as rare/endangered in Maryland and New Jersey.

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 +
(Fernald) Hultén +
Arenaria peploides var. robusta +
Laciniate (?) +, Emarginate (?) +, Jagged (?) +, 2-fid (?) +  and Entire (?) +
obscurely +  and 1-veined +
1.2 cm12 mm <br />0.012 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
lanceolate +  and ovate +
7mm;15mm +
reduced +
herbaceous +  and scarious +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (?) +  and 0.8 cm8 mm <br />0.008 m <br /> (?) +
ovoid;subglobose +
0.5 cm5 mm <br />0.005 m <br /> (?) +  and 1 cm10 mm <br />0.01 m <br /> (?) +
1-6-flowered +
dish--shaped +
expanded +
N.B. +, Nfld. and Labr. (Nfld.) +, N.S. +, P.E.I. +, Que. +, Conn. +, Maine +, Md. +, Mass. +, N.H. +, N.J. +  and N.Y. +
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 +
1 cm10 mm <br />0.01 m <br /> (5.5 cm55 mm <br />0.055 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 /> (2.6 cm26 mm <br />0.026 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 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 late spring–summer. +
Fl. Alaska Yukon +
rugulose +
compressed +  and obovate +
persistent +
distinct +
enlarged +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
reduced +
Illustrated +  and Endemic +
few-branched +  and simple +
15cm;50cm +
ascending;weakly erect +
prostrate to decumbent +
5 cm50 mm <br />0.05 m <br /> (25 cm250 mm <br />0.25 m <br />) +
3mm;6mm +
[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 />) +
Honckenya peploides var. robusta +
Honckenya peploides subsp. robusta +
Honckenya peploides +
subspecies +
divided +
10 +  and 8 +
succulent-coriaceous +