Common names: Greasy or Santa Catalina or Wallace’s nightshade
EndemicConservation concern
Basionym: Solanum xanti var. wallacei A. Gray Proc. Amer. Acad. Arts 11: 91. 1876
Synonyms: S. umbelliferum var. wallacei (A. Gray) D. J. Keil
Treatment appears in FNA Volume 14.

Shrubs or small trees, erect to spreading, unarmed, 1–1.5(–3) m, densely pubescent, hairs transparent, unbranched, to ca. 3 mm, usually glandular. Leaves petiolate; petiole 1–2.5(–4) cm; blade simple, elliptic to obovate, 3–11(–14) × 1.6–5.5(–9) cm, margins entire or slightly undu­late, occasionally with 2 small lobes at base, lobe margins entire, base truncate or acute. Inflorescences terminal or lateral, leaf-opposed or extra-axillary, usually once-branched, occasionally more, 20–30-flowered, (2–)4–10 cm. Pedicels inserted into small sleeve on inflorescence axis, 1.5–2 cm in flower and fruit. Flowers radially symmetric; calyx not accrescent, unarmed, 6–7 mm, densely pubescent, lobes deltate; corolla violet to purple with or without green spots at base of lobes, spots usually small and not confluent, rotate, 3–4.5 cm diam., with abundant interpetalar tissue; stamens equal; anthers ellipsoidal, 4.5–5 mm, dehiscent by terminal pores that open into longitudinal slits; ovary glabrous. Berries shiny green, turning yellow then black, globose, 3–4 cm diam., glabrous, without sclerotic granules. Seeds reddish brown, plump to flattened, 1.5–2 × 1–1.5 mm, minutely pitted.


Phenology: Flowering Mar–Aug.
Habitat: Chaparral, open areas, canyon bottoms.
Elevation: 0–300 m.

Discussion

Solanum wallacei is endemic to Santa Catalina Island.

Selected References

None.

Lower Taxa

None.
... more about "Solanum wallacei"
Lynn Bohs1 +  and 1The author wishes to acknowledge co-authorship with David M. Spooner† on S. jamesii and S. stoloniferum and with Sandra Knapp and Tiina Särkinen on the black nightshade species. +
(A. Gray) Parish +
Solanum xanti var. wallacei +
Greasy or Santa Catalina or Wallace’s nightshade +
0–300 m. +
Chaparral, open areas, canyon bottoms. +
Flowering Mar–Aug. +
Proc. Calif. Acad. Sci., ser. +
Endemic +  and Conservation concern +
S. umbelliferum var. wallacei +
Solanum wallacei +
species +