Marah watsonii

(Cogniaux) Greene

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

Common names: Taw manroot
Endemic
Basionym: Echinocystis watsonii Cogniaux in A. L. P. P. de Candolle and C. de Candolle, Monogr. Phan. 3: 819. 1881
Treatment appears in FNA Volume 6. Treatment on page 23. Mentioned on page 21, 22.

Leaf-blades deeply 5-lobed, 3–8 cm wide, surfaces glaucous abaxially. Flowers: sepals (pistillate) linear-subulate, 1 mm; petals 4–5 mm (pistillate) or 2.5–3 mm (staminate), corolla white, deeply cupulate to campanulate; staminodia present in pistillate flowers. Capsules often striped dark green, globose or depressed-globose to short-ellipsoid, 2–3.5 cm, surface smooth to sparsely echinate or muriculate, spinules weak, 1–2 mm. Seeds 1–4, globose, not compressed, 11–14 mm.


Phenology: Flowering Mar–May(–Jun).
Habitat: Oak and pine-oak grasslands, oak woodlands, yellow pine woodlands, chaparral, rocky slopes and outcrops, roadsides
Elevation: 100–800(–1300) m

Discussion

Marah watsonii is distributed in about 15 counties in north-central California.

Selected References

None.

Lower Taxa

None.

No values specified.

... more about "Marah watsonii"
distinct +  and connate +
Guy L. Nesom +
(Cogniaux) Greene +
Echinocystis watsonii +
suborbiculate;shallowly deeply palmately 5(-7)-lobed +
tubular +, saucer--shaped +, campanulate +  and rotate +
green +  and striped dark +
depressed-globose +  and short-ellipsoid +
2 cm20 mm <br />0.02 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
Taw manroot +
deeply cupulate;campanulate +
100–800(–1300) 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 +
Oak and pine-oak grasslands, oak woodlands, yellow pine woodlands, chaparral, rocky slopes and outcrops, 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 Mar–May(–Jun). +
Leafl. Bot. Observ. Crit. +
globose;fusiform +
not arillate +
not compressed +  and globose +
1.1 cm11 mm <br />0.011 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
linear-subulate +
1 cm10 mm <br />0.01 m <br /> (?) +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
climbing +  and procumbent +
sprawling +  and prostrate +
discoid +  and subglobose +
smooth +  and sparsely echinate +
muriculate +
Marah watsonii +
species +
2-3-branched +  and unbranched +
not fused +
plant +  and climbing +
dioecious +  and monoecious +