Ceanothus microphyllus

Michaux

Fl. Bor.-Amer. 1: 154. 1803.

Common names: Sandflat ceanothus
IllustratedEndemic
Synonyms: Ceanothus serpyllifolius Nuttall
Treatment appears in FNA Volume 12. Treatment on page 83. Mentioned on page 79, 80.

Shrubs, deciduous, 0.4–0.7 m. Stems erect to ascending, not rooting at nodes; branchlets reddish green or yellow-green, not thorn-tipped, round in cross-section, flexible, usually puberulent, sometimes strigillose. Leaves often fascicled; petiole 0.5–1 mm; blade flat, elliptic, ovate-elliptic, or narrowly obovate, 2–10 × 1–6 mm, base cuneate, margins entire or weakly denticulate distally, not wavy, teeth 5–9, apex rounded or obtuse, abaxial surface pale green, puberulent on veins, adaxial surface green, glabrous; pinnately veined or 3-veined from base (venation obscure). Inflorescences axillary or terminal, umbellike or ± racemelike, 1–3 cm. Flowers: sepals, petals, and nectary white. Capsules 3–4.5 mm wide, lobed; valves smooth, not crested.


Phenology: Flowering Mar–Jun.
Habitat: Sandy flats, shrublands, pine-oak woodlands.
Elevation: 0–200 m.

Discussion

Short-statured plants of Ceanothus microphyllus with ovate-elliptic leaves, evident venation, and racemelike inflorescences have been called C. serpyllifolius (M. Van Rensselaer and H. McMinn 1942; W. H. Duncan and J. T. Kartesz 1981). Ceanothus serpyllifolius is treated here as part of C. microphyllus, because of continuous variation in leaf size, shape, and inflorescence architecture. Ceanothus serpyllifolius also has been applied to small-leaved, short-statured plants of C. americanus, some of which may be hybrids between that species and C. microphyllus (N. C. Coile 1988).

Selected References

None.

Lower Taxa

None.

"thin" is not a number.

... more about "Ceanothus microphyllus"
3-veined +  and veined +
perigynous +  and epigynous +
Obtuse (?) +  and Rounded (?) +
Clifford L. Schmidt† +  and Dieter H. Wilken +
Michaux +
cuneate +
3-veined +  and veined +
not gland-dotted +
0.2 cm2 mm <br />0.002 m <br /> (1 cm10 mm <br />0.01 m <br />) +
3[-5]-veined +  and pinnate +
spinulose +, spinose +, serrate +  and entire +
denticulate +, dentate +, crenulate +, crenate +  and serrulate +
obovate;ovate-elliptic;obovate;ovate-elliptic;elliptic;flat +
1mm;6mm +
not thorn-tipped +
strigillose +  and puberulent +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
Sandflat ceanothus +
Ala. +, Fla. +  and Ga. +
0–200 m. +
Sandy flats, shrublands, pine-oak woodlands. +
free +  and adnate +
0 cm0 mm <br />0 m <br /> (0.05 cm0.5 mm <br />5.0e-4 m <br />) +
terminal +  and axillary +
unisexual +  and bisexual +
racemelike +  and umbel-like +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
deciduous +  and persistent +
not wavy;denticulate;entire +
intrastaminal +
superior +  and inferior +
not fleshy +
perigynous +  and epigynous +
adnate +  and distinct +
6 +  and 5 +
Clawed (?) +, Obovate (?) +  and Spatulate (?) +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.1 cm1 mm <br />0.001 m <br />) +
Flowering Mar–Jun. +
2-4-carpellate +
Fl. Bor.-Amer. +
pink +, usually white +  and cream blue or purple +
distinct +
spreading +  and incurved +
6 +  and 5 +
keeled;lanceolate;deltate +
Illustrated +  and Endemic +
not rooting +
erect +  and ascending +
3-veined +  and veined +
Ceanothus serpyllifolius +
Ceanothus microphyllus +
Ceanothus subg. Ceanothus +
species +
paniclelike +  and racemelike +
gland-tipped +
not crested +
unarmed +  and armed +
polygamous +, dioecious +  and synoecious +