Lewisia longipetala

(Piper) S. Clay

Present-day Rock Gard., xx, 341. 1937.

EndemicConservation concern
Basionym: Oreobroma longipetalum Piper Contr. U.S. Natl. Herb. 16: 207. 1913 (as longipet ala)
Synonyms: Lewisia pygmaea subsp. longipetala (Piper) Ferris
Treatment appears in FNA Volume 4. Mentioned on page 481.

Taproots gradually ramified distally. Stems procumbent, 3–6 cm. Leaves: basal leaves withering at or soon after anthesis, gradually narrowed to broad petiole, blade narrowly linear to linear-oblanceolate, flattened or channeled adaxially, 2.5–6 cm, margins entire, apex acute; cauline leaves absent. Inflorescences usually with flowers borne singly, sometimes 2–3-flowered racemose cymes; bracts 2, opposite, plus 1 subtending each successive flower if 2 or more flowers present, lanceolate, 5 mm, margins glandular-toothed, apex acute. Flowers pedicellate, not disarticulate in fruit, 2.5–4 cm diam.; sepals 2, broadly obovate, 4–10 mm, herbaceous at anthesis, margins glandular-toothed, apex rounded to truncate; petals 5–10, white to very pale-pink, often with reddish glands at apex, narrowly elliptic-oblong, 11–20 mm; stamens 7–9; stigmas 5–6; pedicel 10–25 mm. Capsules 8 mm. Seeds 20–50, 1.5 mm, dullish, minutely granular. 2n = ca. 22.


Phenology: Flowering mid-late summer.
Habitat: Rock crevices or damp scree near melting snow
Elevation: 2600 m

Discussion

Of conservation concern.

Lewisia longipetala is known only from the northern Sierra Nevada in Eldorado and Placer counties.

Selected References

None.

Lower Taxa

None.
... more about "Lewisia longipetala"
Rounded (?) +  and Truncate (?) +
Mark A. Hershkovitz +  and Sean B. Hogan +
(Piper) S. Clay +
ephemeral +  and evergreen +
2.5 cm25 mm <br />0.025 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Oreobroma longipetalum +
occasionally dentate;crisped +
narrowly linear +  and linear-oblanceolate flattened or channeled +
persistent +
subtending +
1 (?) +  and 2 (?) +
subequal +
circumscissile +
8 cm80 mm <br />0.08 m <br /> (?) +
enlarged +
gradually +  and sessile +
whorled +, opposite +  and alternate +
2-3-flowered +
racemose +  and singly +
2600 m +
2.5 cm25 mm <br />0.025 m <br /> (4 cm40 mm <br />0.04 m <br />) +
disarticulate in fruit +  and persistent +
5 cm50 mm <br />0.05 m <br /> (?) +
Rock crevices or damp scree near melting snow +
paniculate +  and racemose +
terminal +  and axillary +
exstipulate +  and secund +
subrosulate +, rosulate +, alternate +, subopposite +  and opposite +
cauline +  and basal +
glandular-toothed +
plurilocular +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
connate +  and distinct +
1.1 cm11 mm <br />0.011 m <br /> (2 cm20 mm <br />0.02 m <br />) +
narrowly linear +  and linear-oblanceolate flattened or channeled +
Flowering mid-late summer. +
Present-day Rock Gard., xx, +
estrophiolate +
Black (?) +  and Brown (?) +
1 +  and 50 +
sculptured +  and smooth +
sculpted +
1.5 +, 20mm +  and 50mm +
persistent +
obovate +
subequal +
0.4 cm4 mm <br />0.004 m <br /> (1 cm10 mm <br />0.01 m <br />) +
Endemic +  and Conservation concern +
distinct +  and scarcely connate and/or adnate +
7 (?) +  and 9 (?) +
branched +, simple +  and scapelike +
deciduous +
prostrate +  and erect +
3 cm30 mm <br />0.03 m <br /> (6 cm60 mm <br />0.06 m <br />) +
5 +  and 6 +
Lewisia pygmaea subsp. longipetala +
Lewisia longipetala +
species +
fleshy +  and succulent +
15 +, 14 +, 13 +, 12 +, 11 +  and 10 +