Eriocaulon parkeri

B. L. Robinson

Rhodora 5: 175. 1903.

Common names: &Eacute riocaulon de Parker
Endemic
Treatment appears in FNA Volume 22. Treatment on page 201.

Herbs, perennial, 10–20 (–30) cm. Leaves linear-attenuate, 2–6 (–9) cm, apex filiform-terete. Inflorescences: scape sheaths slightly longer or slightly shorter than leaves, loose; scapes linear, 0.5–1 mm wide, 4–5-ribbed; mature heads dull gray or lead-colored, rarely straw-colored, hemispheric to subglobose, 3–4 mm wide, mostly nearly glabrous; receptacle glabrous; outer involucral-bracts usually not reflexed, not obscured by braceteoles and perianth, straw-colored, greenish, or light gray to gray, dull, ovate to suborbiculate or obovate, 2 mm, margins often erose or lacerate, apex blunt, glabrous; inner bracts, receptacular bracteoles grayish, cuneate to narrowly obovate, 2 mm, margins often erose or lacerate, apex obtuse, glabrous or with a few white hairs abaxially at apex. Staminate flowers: sepals 2, gray, linear to oblong or oblanceolate, 2 mm, apex obtuse, glabrous or with a few white hairs abaxially at apex; androphore club-shaped; petals 2, triangular, minute, white-hairy; stamens 4; anthers black. Pistillate flowers: sepals 2, gray, oblong or oblanceolate, 2 mm, scarious, apex obtuse, abaxially hairy apically; petals 2, yellow-white, spatulate, 2 mm, apex obtuse, glabrous or with a few white, club-shaped hairs apically, adaxially; pistil 2-carpellate. Seeds redbrown, ovoid to broadly ellipsoid, 0.5 (–7) mm, with delicate reticulum of horizontally oriented alveolae.


Phenology: Flowering summer–fall.
Habitat: Muddy tidewater banks, brackish marsh, mud flats
Elevation: 0–100 m

Distribution

V22 32-distribution-map.jpg

Que., Conn., Del., Maine, Md., Mass., N.J., N.Y., N.C., Va.

Discussion

A considerable amount of transitional material occurs between Eriocaulon parkeri and E. aquaticum at places along coastal streams where brackish habitat meets more acid habitat upstream.

Selected References

None.

Lower Taxa

None.

"narrower" is not a number.

... more about "Eriocaulon parkeri"
club--shaped +
longitudinal +
versatile +  and dorsifixed +
with a few white , club-shaped hairs +, glabrous +, hairy +  and with a few white hairs +
peglike +  and glandlike +
cleft +, fringed +  and bladelike +
Robert Kral +
B. L. Robinson +
branching +, monopodial +  and sympodial +
lacunate +
stipelike +
greener +  and pale +
lingulate;triangular-acuminate;linear-attenuate +
narrowing +
&Eacute +  and riocaulon de Parker +
Que. +, Conn. +, Del. +, Maine +, Md. +, Mass. +, N.J. +, N.Y. +, N.C. +  and Va. +
0–100 m +
mealy-starchy +
epipetalous +
pistillate +  and staminate +
unappendaged +
pale +  and dark +
subapical +  and adaxial +
Muddy tidewater banks, brackish marsh, mud flats +
multicellular +
club--shaped +
straw-colored +, lead-colored +, gray +  and dull +
hemispheric;subglobose +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
involucrate +  and simple +
axillary +  and terminal +
short-cylindric +  and buttonlike +
not obscured +  and obscured +
septate +  and unbranched +
6 cm60 mm <br />0.06 m <br /> (9 cm90 mm <br />0.09 m <br />) +
linear-attenuate +
2 cm20 mm <br />0.02 m <br /> (6 cm60 mm <br />0.06 m <br />) +
lacerate +
light gray +  and gray +
2 cm20 mm <br />0.02 m <br /> (?) +
orthotropous +  and pendulous +
adaxial-apical +
separating +  and separated +
white-hairy +
2 cm20 mm <br />0.02 m <br /> (?) +
Flowering summer–fall. +
thinner +  and narrower +
spongy-septate +
spongy +  and fibrous +
multiribbed +, twisted +  and simple +
1;several +
0.5mm;1mm +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
sculptured +
ovoid +  and broadly ellipsoid +
oblanceolate;oblong;linear;oblong or oblanceolate +
2 cm20 mm <br />0.02 m <br /> (?) +
dilated +
unequal +
prostrate +  and repent +
elongate +
short-to-elongate +
unappendaged +
Eriocaulon parkeri +
Eriocaulon +
species +
scapose +  and caulescent +
pubescent +  and glabrous +