Lachnocaulon engleri

Ruhland in H. G. A. Engler

in H. G. A. Engler,Das Pflanzenreich 13[IV,30]: 241. 1903.

IllustratedEndemicConservation concern
Treatment appears in FNA Volume 22.

Herbs, short-lived perennial, solitary or cespitose, forming low domes of rosettes, 6–15 cm. Leaves mostly linear-triangular, 2–4 cm, apex acute. Inflorescences: scape sheaths shorter than or as long as principal leaves; scapes filiform, distally 0.4 mm thick, 4–5-ribbed, glabrous; mature heads dark-brown or reddish-brown, nearly globose, usually short cylindric by seeding time, 3–4 mm; receptacle densely pilose; involucral-bracts soon reflexed, brown, mostly ovate, 1 (–1.5) mm, apex broadly acute to obtuse, surfaces glabrous or apex sparsely pilose, hairs translucent, club-shaped; receptacular-bracts, dark-brown, broadly spatulate or obovate-cuneate, concave, with broad, low, pale keel, 1–1.5 mm, apex short-acuminate, glabrous or abaxial surface with translucent, club-shaped hairs distally. Staminate flowers: sepals 3, dark-brown, narrowly spatulate to oblanceolate-cuneate, concave, 1 mm, glabrous or abaxially with scattered translucent, club-shaped hairs distally; androphore pale, narrowly obconic, as long as sepals, glabrous, rarely apex with few club-shaped hairs; stamens 2–3, appendages (2–) 3. Pistillate flowers: sepals 3, dark-brown, spatulate-oblong, concave, 1 mm, abaxially sparsely pubescent distally, hairs translucent; gynoecium 3-carpellate; styles: apex 3-cleft, appendages 3. Seeds rich translucent brown, broadly ovoid to ellipsoid, 0.4–0.5 mm, longitudinal ribs conspicuous and pale, transverse striae fine forming linear cancellae.


Phenology: Flowering summer–fall.
Habitat: Moist sandy-peaty lake and pond shores, drawdowns, ditchbanks, low sandy clearings in savanna and flatwoods
Elevation: 0–100 m

Discussion

Of conservation concern.

Selected References

None.

Lower Taxa

None.
... more about "Lachnocaulon engleri"
pale +  and yellowish +
longitudinal +
versatile +  and dorsifixed +
glabrous +  and pilose +
peglike +  and glandlike +
cleft +, fringed +  and bladelike +
Robert Kral +
Ruhland in H. G. A. Engler +
branching +, monopodial +  and sympodial +
dilated +
tapering;lingulate;linear;linear-triangular +
Ala. +  and Fla. +
0–100 m +
mealy-starchy +
epipetalous +
pistillate +  and staminate +
lanceovoid +
Moist sandy-peaty lake and pond shores, drawdowns, ditchbanks, low sandy clearings in savanna and flatwoods +
compound +  and simple +
club--shaped +
reddish-brown +  and dark-brown +
cylindric;globose +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
involucrate +  and simple +
axillary +  and terminal +
concave +, obovate-cuneate +  and spatulate +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
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. +
in H. G. A. Engler,Das Pflanzenreich +
conspicuous +
not septate +  and branched +
slender +
multiribbed +, twisted +  and simple +
filiform +
0.4 cm4 mm <br />0.004 m <br /> (?) +
sculptured +
broadly ovoid +  and ellipsoid +
distinct +
pubescent +, abaxially +  and glabrous +
concave;spatulate-oblong;concave;narrowly spatulate;oblanceolate-cuneate +
1 cm10 mm <br />0.01 m <br /> (?) +
Illustrated +, Endemic +  and Conservation concern +
2 (?) +  and 3 (?) +
unequal +
prostrate +  and repent +
elongate +
short-to-elongate +
Lachnocaulon engleri +
Lachnocaulon +
species +
scapose +  and caulescent +
perennial +  and short-lived +
herb +, cespitose +  and solitary +
pubescent +  and glabrous +