Lycium exsertum

A. Gray

Proc. Amer. Acad. Arts 20: 305. 1885.

Common names: Arizona desert-thorn
Treatment appears in FNA Volume 14.
Revision as of 21:34, 6 October 2024 by imported>Volume Importer
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Shrubs erect, 1–4 m; bark dark gray to brown; stems densely glandular-pubescent. Leaves: blade spatulate, 5–25 × 3–10 mm, surfaces densely glandular-pubescent. Inflorescences 2–3-flowered fascicles or solitary flowers. Pedicels 3–6 mm. Flowers bisexual or pistillate, 5-merous; calyx tubular-campanulate, 2.5–6 mm, lobe lengths 0.25–0.5 times tube; corolla greenish white to lavender, funnelform, 7–14 mm, lobes 1–2 mm; stamens exserted 2–3+ mm in bisexual flowers. Berries red, ovoid, 6–8 mm, fleshy. Seeds 20–35. 2n = 48.


Phenology: Flowering Jan–Apr.
Habitat: Desert washes, bajadas (Sonoran Desert).
Elevation: 300–1400 m.

Distribution

Ariz., Mexico (Baja California, Sinaloa, Sonora).

Discussion

Populations of Lycium exsertum are morphologically gynodioecious (functionally dioecious), and plants are sexually dimorphic for flower size. Lycium exsertum can be differentiated from L. fremontii by its light purple pendent flowers, often considerably exserted stamens or stigma, and a more upland habitat.

Selected References

None.

Lower Taxa

None.
... more about "Lycium exsertum"
Rachel A. Levin +  and Jill S. Miller +
A. Gray +
Arizona desert-thorn +
Ariz. +, Mexico (Baja California +, Sinaloa +  and Sonora). +
300–1400 m. +
Desert washes, bajadas (Sonoran Desert). +
Flowering Jan–Apr. +
Proc. Amer. Acad. Arts +
Lycium exsertum +
species +