Lachnocaulon minus

(Chapman) Small

Flora of the Southeastern United States 235, 1328. 1903.

Endemic
Basionym: Lachnocaulon michauxii var. minor Chapman Fl. South. U.S. ed. 3, 531. 1897
Synonyms: Lachnocaulon eciliatum Small
Treatment appears in FNA Volume 22.

Herbs, short-lived perennial, solitary or cespitose, forming low domes of rosettes, 6–15 (–20) cm. Leaves linear-triangular, 2–4 cm, apex narrowly acute to subulate. Inflorescences: scape sheaths shorter than principal leaves; scapes filiform, 0.3–0.4 mm thick, 4–5-ribbed, pilose from base to apex, with ascending hairs; mature heads dull gray-brown, globose to short-cylindric, 3–4 mm wide; receptacle copiously hairy, partly obscuring flowers (old heads may lose some hairs); involucral-bracts soon reflexed, pale to dark-brown, mostly ovate or broadly oblong, 1 mm, apex broadly acute, distal margins pilose, hairs translucent, capitate, abaxial surface distally pilose, hairs translucent; receptacular-bracts pale-brown to chestnut-brown, broadly spatulate or pandurate, concave, 1 (–1.5) mm, apex rounded or obtuse, abaxial surface pilose toward apex, hairs translucent; Staminate flowers: sepals 3, chestnut-brown, base greenish, spatulate, blade concave, 1–1.5 mm, apex rounded or obtuse, abaxial surface pilose toward apex, hairs translucent; androphore yellow-white, narrowly obconic, as long as sepals, glabrous, rarely with apex hairy, hairs club-shaped, short; anthers 3, appendages 3. Pistillate flowers: sepals 3, pale, spatulate, concave, 1–1.5 mm, apex obtuse or short-acuminate, abaxial surface apically with translucent hairs; gynoecium 3-carpellate; stylar column pale, apex 3-cleft, appendages 3. Seeds deep clear brown, ellipsoid, 0.5 mm, apex apiculate, body longitudinally low-ribbed, ribs pale, transverse striae fine.


Phenology: Flowering summer–fall.
Habitat: Sands and peats of pond edges, ditchbanks, lake shores, drawdowns or moist exposed seeps
Elevation: 0–200 m

Distribution

V22 410-distribution-map.jpg

Ala., Fla., Ga., N.C., S.C.

Discussion

The favorite habitat of Lachnocaulon minus is the fluctuating shores of karst ponds where it may be aspect dominant along the edge of the maximum pool.

Selected References

None.

Lower Taxa

None.
... more about "Lachnocaulon minus"
pale +  and yellowish +
longitudinal +
versatile +  and dorsifixed +
apiculate +  and 3-cleft +
peglike +  and glandlike +
cleft +, fringed +  and bladelike +
Robert Kral +
(Chapman) Small +
branching +, monopodial +  and sympodial +
spatulate +
Lachnocaulon michauxii var. minor +
concave +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
Ala. +, Fla. +, Ga. +, N.C. +  and S.C. +
0–200 m +
mealy-starchy +
epipetalous +
pistillate +  and staminate +
lanceovoid +
Sands and peats of pond edges, ditchbanks, lake shores, drawdowns or moist exposed seeps +
compound +  and simple +
club--shaped +
gray-brown +
globose;short-cylindric +
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 +
pale +  and dark-brown +
1 cm10 mm <br />0.01 m <br /> (?) +
linear-triangular +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
2-cleft +, acute +  and oblique +
orthotropous +  and pendulous +
adaxial-apical +
reduced to small +
Flowering summer–fall. +
Flora of the Southeastern United States +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
pale-brown +  and chestnut-brown +
concave +, pandurate +  and spatulate +
1 cm10 mm <br />0.01 m <br /> (?) +
not septate +  and branched +
slender +
multiribbed +, twisted +  and simple +
filiform +
0.03 cm0.3 mm <br />3.0e-4 m <br /> (?) +  and 0.04 cm0.4 mm <br />4.0e-4 m <br /> (?) +
sculptured +
ellipsoid +
pale +  and chestnut-brown +
distinct +
concave;spatulate +
0.1 cm1 mm <br />0.001 m <br /> (?) +  and 0.15 cm1.5 mm <br />0.0015 m <br /> (?) +
unequal +
prostrate +  and repent +
elongate +
short-to-elongate +
hairy +  and glabrous +
Lachnocaulon eciliatum +
Lachnocaulon minus +
Lachnocaulon +
species +
scapose +  and caulescent +
perennial +  and short-lived +
herb +, cespitose +  and solitary +
pubescent +  and glabrous +