Lachnocaulon beyrichianum

Sporleder ex Kornicke

Linnaea 27: 567. 1856.

EndemicConservation concern
Treatment appears in FNA Volume 22.

Herbs, perennial, cespitose, forming domes of rosettes, 15–23 cm. Leaves narrowly linear, abruptly attenuate, 1.5–4 cm, apex subulate. Inflorescences: scape sheaths shorter than leaves; scapes filiform, 0.5 mm wide, obscurely ridged, proximally densely pilose with ascending hairs, distally glabrous or nearly so; mature heads dull gray-brown or pale gray, globose to short cylindric, 3.5–4 (–5) mm wide; receptacle pilose with translucent hairs; outer involucral-bracts reflexed, brown to chestnut-brown, ovate, 1 mm, apex obtuse, abaxially pilose; inner bracts distally brown, broadly spatulate or pandurate, 1–1.5 (–2) mm, apex obtuse, pilose-ciliate, adaxially pilose with whitish, mealy, opaque, club-shaped hairs. Staminate flowers: sepals 3, brown to chestnut-brown, oblanceolate-spatulate, 1–1.5 (–2) mm, apex obtuse, ciliate, abaxially with white, mealy, opaque hairs; androphore pale, club-shaped, as long as sepals, glabrous; stamens 3, appendages 3. Pistillate flowers: sepals 3, tan or pale-brown, oblong to linear, 2–3 mm, apex acute, glabrous or abaxially pilose toward apex, hairs white; gynoecium 3-carpellate; stylar column pale, dilated apically, appendages 3. Seeds dark redbrown, very lustrous, ellipsoid, 0.5 mm, apex apiculate, longitudinal ribs faint, transverse ribs forming finely cross-striolate pattern.


Phenology: Flowering summer–fall.
Habitat: Sands and sandy peats, frequently dry pond shores, flatwoods, pine savanna, sandhills ecotones
Elevation: 0–100 m

Discussion

Through its range Lachnocaulon beyrichianum is sympatric with L. anceps; it has narrower, more glabrous foliage, smaller heads, darker bracts, and smoother, more lustrous seeds. Where the two are in the same site, L. beyrichianum takes the drier substrata.

Of conservation concern.

Selected References

None.

Lower Taxa

None.
... more about "Lachnocaulon beyrichianum"
club--shaped +
pale +  and yellowish +
longitudinal +
versatile +  and dorsifixed +
ciliate +  and pilose-ciliate +
pilose +  and glabrous +
Acute (?) +, Obtuse (?) +  and Subulate (?) +
peglike +  and glandlike +
cleft +, fringed +  and bladelike +
Robert Kral +
Sporleder ex Kornicke +
branching +, monopodial +  and sympodial +
dilated +
tapering;lingulate;linear;linear-triangular +
Fla. +, Ga. +, N.C. +  and S.C. +
0–100 m +
mealy-starchy +
epipetalous +
pistillate +  and staminate +
lanceovoid +
Sands and sandy peats, frequently dry pond shores, flatwoods, pine savanna, sandhills ecotones +
compound +  and simple +
white +, opaque +  and whitish +
club--shaped +
pale gray +, gray-brown +  and dull +
globose;short cylindric +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
involucrate +  and simple +
axillary +  and terminal +
short-cylindric +  and buttonlike +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
pandurate;spatulate +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
attenuate +
1.5 cm15 mm <br />0.015 m <br /> (4 cm40 mm <br />0.04 m <br />) +
2-cleft +, acute +  and oblique +
brown +  and chestnut-brown +
1 cm10 mm <br />0.01 m <br /> (?) +
orthotropous +  and pendulous +
adaxial-apical +
cross-striolate +
reduced to small +
Flowering summer–fall. +
transverse +  and longitudinal +
not septate +  and branched +
slender +
multiribbed +, twisted +  and simple +
nearly +, glabrous +  and pilose +
ridged +  and filiform +
sculptured +
ellipsoid +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
pale-brown +, tan +, brown +  and chestnut-brown +
distinct +
oblong;linear +
0.2 cm2 mm <br />0.002 m <br /> (?) +  and 0.3 cm3 mm <br />0.003 m <br /> (?) +
Endemic +  and Conservation concern +
unequal +
prostrate +  and repent +
elongate +
short-to-elongate +
hairy +  and glabrous +
Lachnocaulon beyrichianum +
Lachnocaulon +
species +
scapose +  and caulescent +
herb +  and cespitose +
pubescent +  and glabrous +