Lachnocaulon digynum

Körnicke

Linnaea 27: 570. 1856.

Endemic
Synonyms: Lachnocaulon diandrum Van Heurck & Müller-Agroviensis
Treatment appears in FNA Volume 22. Treatment on page 209.

Herbs, perennial, densely cespitose, forming rosettes, 5–15 cm. Leaves linear or linear-triangular, mostly 0.5–2 cm, apex narrowly acute to acute, rarely blunt. Inflorescences: scape sheaths longer than or at least rising above leaves; scapes linear to filiform, distally 0.3–0.4 mm wide, glabrous; mature heads gray or gray-brown, hemispheric, usually globose by seeding time, 2–3.5 mm wide; receptacle densely pilose; involucral-bracts soon reflexed, brown, ovate to triangular, 0.5–1 mm, apex acute, surfaces abaxially pilose; receptacular-bracts brown, mostly narrowly obovate-cuneate or spatulate, concave, 1–1.5 mm, apex acute, abaxially pilose distally, hairs translucent, club-shaped. Staminate flowers: sepals 3, deep brown, spatulate, 1 mm, apex obtuse, distally pilose, hairs translucent; androphore pale, claviform, as long as sepals; stamens 2, appendages 2. Pistillate flowers: sepals 2, pale, broadly spatulate to narrowly oblong-obovate, concave, oblique, keeled, 1 mm, apex obtuse, apex ciliate, abaxially pilose distally, hairs translucent; gynoecium 2-carpellate; styles apically dilated, apex 2-cleft, appendages 2, deeply 2-cleft. Seeds brown, ovoid to ellipsoid, 0.5 mm, apex apiculate, longitudinal ribs fine, pale, transverse striae fine, indistinct.


Phenology: Flowering summer–fall.
Habitat: Moist to wet sandy peats of "slick" seeps, bogs, ditchbanks, streambanks and low places in pine savanna
Elevation: 0–100 m

Distribution

V22 325-distribution-map.jpg

Ala., Fla., La., Miss., Tex.

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Lachnocaulon digynum"
pale +  and yellowish +
longitudinal +
versatile +  and dorsifixed +
apiculate +  and 2-cleft +
obtuse +, acute +, blunt +  and narrowly acute +
cleft +, fringed +  and bladelike +
Robert Kral +
Körnicke +
branching +, monopodial +  and sympodial +
dilated +
tapering;lingulate;linear;linear-triangular +
Ala. +, Fla. +, La. +, Miss. +  and Tex. +
0–100 m +
mealy-starchy +
epipetalous +
pistillate +  and staminate +
club--shaped +
lanceovoid +
Moist to wet sandy peats of "slick" seeps, bogs, ditchbanks, streambanks and low places in pine savanna +
compound +  and simple +
club--shaped +
gray-brown +  and gray +
globose;hemispheric +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
involucrate +  and simple +
axillary +  and terminal +
short-cylindric +  and buttonlike +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
linear-triangular +  and linear +
0.5 cm5 mm <br />0.005 m <br /> (2 cm20 mm <br />0.02 m <br />) +
2-cleft +, acute +  and oblique +
orthotropous +  and pendulous +
adaxial-apical +
reduced to small +
Flowering summer–fall. +
concave +, spatulate +  and obovate-cuneate +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
not septate +  and branched +
slender +
multiribbed +, twisted +  and simple +
linear +  and filiform +
0.3mm;0.4mm +
sculptured +
ovoid +  and ellipsoid +
0.5 cm5 mm <br />0.005 m <br /> (?) +
pale +  and brown +
distinct +
2 +  and 3 +
keeled;concave;broadly spatulate;narrowly oblong-obovate +
1 cm10 mm <br />0.01 m <br /> (?) +
unequal +
prostrate +  and repent +
elongate +
short-to-elongate +
dilated +
Lachnocaulon diandrum +
Lachnocaulon digynum +
Lachnocaulon +
species +
scapose +  and caulescent +
herb +  and cespitose +
pubescent +  and glabrous +