Marah guadalupensis

(S. Watson) Greene

Leafl. Bot. Observ. Crit. 2: 36. 1910.

Common names: Island manroot
Basionym: Megarrhiza guadalupensis S. Watson Proc. Amer. Acad. Arts 11: 115, 138. 1876
Synonyms: Marah macrocarpa var. major (Dunn) Stocking M. major Dunn
Treatment appears in FNA Volume 6. Treatment on page 23. Mentioned on page 22.

Leaf blades deeply 5-lobed, (10–)15–20(–25) cm wide. Flowers: sepals (pistillate) linear, 6–7 mm; petals 8–10 mm (pistillate) or 6–7 mm (staminate), corolla white, shallowly cupulate; staminodia present in pistillate flowers. Capsules yellowish green at maturity, ovoid, beaked, 5–7 cm, surface sparsely hirsute-echinate, spinules weak, 1–3 mm. Seeds 2–4, orbiculate to elliptic or oblong, compressed, (22–)28–33 mm.


Phenology: Flowering Feb–Apr.
Habitat: Washes, stream edges, grassy slopes, beach bluffs, roadsides
Elevation: 0–200(–500) m

Distribution

V6 32-distribution-map.jpg

Calif., Mexico (Baja California).

Discussion

The nomenclatural type of Marah guadalupensis is from Guadalupe Island off the coast of Baja California; the main cluster of populations is on the Channel Islands of California (Santa Barbara County).

Selected References

None.

Lower Taxa

None.
... more about "Marah guadalupensis"
Guy L. Nesom +
(S. Watson) Greene +
Megarrhiza guadalupensis +
Island manroot +
Calif. +  and Mexico (Baja California). +
0–200(–500) m +
Washes, stream edges, grassy slopes, beach bluffs, roadsides +
Flowering Feb–Apr. +
Leafl. Bot. Observ. Crit. +
Marah macrocarpa var. major +  and M. major +
Marah guadalupensis +
species +