Sedella pentandra

H. Sharsmith

Madroño 3: 240, plate 12, figs. 4, 5. 1936,.

IllustratedEndemic
Synonyms: Parvisedum pentandrum (H. Sharsmith) R. T. Clausen
Treatment appears in FNA Volume 8. Treatment on page 197. Mentioned on page 196.

Plants 0.3–1.3 dm, often with 1–4 ascending branches shorter than main axis; hypocotyl 1–2 cm. Stems 5–15-noded. Leaf-blades 0.4–0.7 × 0.2–0.3 cm. Cymes 1–5-branched, 2–12-flowered, sometimes flowers solitary, 1–4 cm. Flowers 2–3 mm diam.; calyx base thickened for 1 mm; petals ascending, later appressed to utricles, pale greenish yellow or with dorsal red streak, ovatelanceolate, 1.5–2 × 0.5–0.6 mm, apex acute; stamens 5; pistils 1 mm, adaxially stipitate-glandular; styles erect, 0.2–0.4 mm. Utricles erect and appressed, 1.2–1.5 mm. Seeds 0.7–0.9 mm. 2n = 18.


Phenology: Flowering spring.
Habitat: Thin soil on slate, shale, sandstone, or serpentine
Elevation: 300-700 m

Discussion

M. W. Skinner and B. M. Pavlik (1994) considered Sedella pentandra for listing as rare in California but rejected it as too common.

Selected References

None.

Lower Taxa

None.

"dm" is not declared as a valid unit of measurement for this property.

... more about "Sedella pentandra"
perigynous +  and hypogynous +
Reid V. Moran +
H. Sharsmith +
lobed +  and toothed +
oblong-ovoid +  and obovoid +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
succulent +
not circumscissile +
whorled +, opposite +  and alternate +
not circumscissile +
2-12-flowered +  and 1-5-branched +
300-700 m +
5-merous +  and subsessile +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
ascending +  and erect +
Thin soil on slate, shale, sandstone, or serpentine +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
axillary +  and terminal +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.2cm;0.3cm +
deciduous +
connate +
semi-inferior +  and superior +
tenuinucellate +, crassinucellate +  and bitegmic +
perigynous +  and hypogynous +
with dorsal red streak +, yellow +  and pale greenish +
distinct +  and connate +
1.5mm;2mm +
ovatelanceolate +
0.05 cm0.5 mm <br />5.0e-4 m <br /> (0.06 cm0.6 mm <br />6.0e-4 m <br />) +
Flowering spring. +
(3-)4-5(-12)[-30+]-carpellate +
stipitate-glandular +
1 cm10 mm <br />0.01 m <br /> (?) +
oblong-clavate +
0.07 cm0.7 mm <br />7.0e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
1 +  and many +
Illustrated +  and Endemic +
adnate +  and free +
antipetalous +
branched +  and simple +
succulent +
distinct +
2+ times shorter than ovary +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.04 cm0.4 mm <br />4.0e-4 m <br />) +
Parvisedum pentandrum +
Sedella pentandra +
species +
0.12 cm1.2 mm <br />0.0012 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
not conspicuous +
perennial +, biennial +  and annual +