Spergularia macrotheca var. longistyla

R. Rossbach

Rhodora 42: 78, plate 589, fig.le,f.1940.

Endemic
Treatment appears in FNA Volume 5. Treatment on page 18.

Plants 10–30 cm. Stems ascending or erect, sometimes prostrate. Leaves: stipules 4.5–8 mm; blade 1.5–4 cm. Flowers: sepal lobes ovate to lanceolate, (4.5–) 5–5.5 mm, to 7 mm in fruit; petals white, 1–1.3 times as long as sepals; styles 2–3 mm. Capsules 0.8–1 times as long as sepals. Seeds dark redbrown, often with submarginal groove, suborbiculate to pyriform, 0.8–1.2 mm, covered with rounded, elongate tubercles; wing sometimes absent, 0.2–0.3 mm wide.


Phenology: Flowering spring.
Habitat: Alkaline marshes, mud flats, meadows, hot springs
Elevation: 20-200 m

Discussion

Selected References

None.

Lower Taxa

None.

"-1timesaslongassepals" is not declared as a valid unit of measurement for this property.

perigynous +  and hypogynous +
apiculate +  and spine-tipped +
blunt;rounded +
Ronald L. Hartman +  and Richard K. Rabeler +
R. Rossbach +
Arenaria macrotheca +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
threadlike +  and linear +
1.5 cm15 mm <br />0.015 m <br /> (4 cm40 mm <br />0.04 m <br />) +
smaller +
0.46 cm4.6 mm <br />0.0046 m <br /> (1 cm10 mm <br />0.01 m <br />) +
simple +  and 3-compound +
dish--shaped +
expanded +
20-200 m +
peripheral +
unisexual +  and bisexual +
stalked +  and simple +
Alkaline marshes, mud flats, meadows, hot springs +
dish or cupshaped +
cup-shaped +  and dish +
0-8+-compound +, simple +  and branching +
cluster +  and opposite +
distinct +
ovate +  and lanceolate +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
0.3mm +  and 0.7mm +
rounded +
swollen +
3 +  and 5 +
crassinucellate +  and bitegmic +
campylotropous +
reflexed;erect +
perigynous +  and hypogynous +
fugacious +
1-1.3 times as long as sepals +
elliptic +  and obovate +
Flowering spring. +
partial +  and complete +
0.06 cm0.6 mm <br />6.0e-4 m <br /> (0.07 cm0.7 mm <br />7.0e-4 m <br />) +
dark redbrown +
not papillate +, sculpturing of parallel , wavy lines +, smooth +  and faintly or prominently tuberculate +
suborbiculate +  and pyriform +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.12 cm1.2 mm <br />0.0012 m <br />) +
membranous +
not +  and hooded +
persistent +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
ovate;lanceolate +
0 cm0 mm <br />0 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
lanceolate;ovate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
9 +  and 10 +
erect;ascending +
[30 +  and 3 +
papillate +
white +  and tan +
triangular +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
nearly +  and distinct +
filiform +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
Delia +  and Lepigonum +
Spergularia macrotheca var. longistyla +
Spergularia macrotheca +
variety +
divided +
elongate +  and rounded +
not rhizomatous +  and taprooted +
pubescence of simple hairs or stalked glands +  and glabrous +
white to reddish-brown +
0.2mm +  and 0.3mm +