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.

No values specified.

... more about "Marah guadalupensis"
distinct +  and connate +
Guy L. Nesom +
(S. Watson) Greene +
Megarrhiza guadalupensis +
suborbiculate;shallowly deeply palmately 5(-7)-lobed +
tubular +, saucer--shaped +, campanulate +  and rotate +
yellowish green +
Island manroot +
Calif. +  and Mexico (Baja California) +
0–200(–500) m +
furrowed +  and echinate +
dehiscent +  and indehiscent +
bristly +, smooth +, hairy +  and glabrous +
tuberculate +  and muricate +
fleshy +  and hard +
thin-walled +  and moderately sparsely or densely echinate +
short-beaked +  and symmetric +
green-striped;yellowish green;orange-yellow +
globose +  and subglobose or depressed-globose short-ellipsoid ovoid or oblong +
Washes, stream edges, grassy slopes, beach bluffs, roadsides +
perennial +
dioecious +  and monoecious +
campanulate;cupulate +
umbellate;subumbellate +
solitary +, corymbose +, fasciculate +, racemose +  and paniculate +
petiolate +, estipulate +  and simple +
deltate;oblong-ovate or ovate +
remotely +  and entire +
dentate-lobulate +
differentiated +
ovoid;globose +
induplicate-valvate +  and imbricate +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
greenish;greenish yellow;cream-yellow;greenish yellow;cream-yellow;white +
glandular-villous +
triangular;ovate or oblong-ovate +
Flowering Feb–Apr. +
Leafl. Bot. Observ. Crit. +
globose;fusiform +
not arillate +
2.2 cm22 mm <br />0.022 m <br /> (2.8 cm28 mm <br />0.028 m <br />) +
compressed +, orbiculate +  and elliptic or oblong +
2.8 cm28 mm <br />0.028 m <br /> (3.3 cm33 mm <br />0.033 m <br />) +
filiform;subulate or deltate +
0.6 cm6 mm <br />0.006 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
climbing +  and procumbent +
sprawling +  and prostrate +
discoid +  and subglobose +
hirsute-echinate +
5 cm50 mm <br />0.05 m <br /> (7 cm70 mm <br />0.07 m <br />) +
Marah macrocarpa var. major +  and M. major +
Marah guadalupensis +
species +
2-3-branched +  and unbranched +
not fused +
plant +  and climbing +
dioecious +  and monoecious +