Cnidoscolus angustidens

Torrey in W. H. Emory

Rep. U.S. Mex. Bound. 2(1): 198. 1859.

Treatment appears in FNA Volume 12. Treatment on page 197.

Plants 15–100 cm. Leaves: stipules 5–6 mm, margins deeply toothed; petiole 2–10 cm; blade ± round in outline, 8–15 cm diam., moderately lobed, lobes 1/3–1/2 blade length, base broadly cordate, margins dentate, teeth and lobe apices acuminate, aristate. Staminate flowers: calyx funnel-shaped, tube 4–6 mm, distally flaring, stinging hairs absent, lobes 4–8 mm; stamens subequal, filaments all connate most of length; staminodes 3, threadlike. Pistillate flowers: sepals 10–12 mm; stigmas 12. Capsules 10–12 mm. Seeds brown, sometimes mottled, 9–11 mm.


Phenology: Flowering May–Sep.
Habitat: Grasslands, desert scrub, oak woodlands.
Elevation: 1100–1600 m.

Distribution

V12 398-distribution-map.jpg

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

Discussion

In the flora area, Cnidoscolus angustidens is restricted to southern Arizona.

Selected References

None.

Lower Taxa

None.

"connate" is not a number."cordate" is not a number."/2" is not declared as a valid unit of measurement for this property.

... more about "Cnidoscolus angustidens"
Geoffrey A. Levin +
Torrey in W. H. Emory +
8 cm80 mm <br />0.08 m <br /> (15 cm150 mm <br />0.15 m <br />) +
lobed;round +
funnel--shaped +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
Ariz. +, Mexico (Baja California Sur) +, Mexico (Sinaloa) +  and Mexico (Sonora) +
1100–1600 m. +
pistillate +  and staminate +
subtending +
Grasslands, desert scrub, oak woodlands. +
leaf-opposed +, terminal +  and axillary +
palmate +  and pinnate +
dentate +  and entire +
aristate +, acuminate +  and toothed +
intrastaminal +
connate;distinct +
2 cm20 mm <br />0.02 m <br /> (10 cm100 mm <br />0.1 m <br />) +
Flowering May–Sep. +
Rep. U.S. Mex. Bound. +
mottled;brown +
0.9 cm9 mm <br />0.009 m <br /> (1.1 cm11 mm <br />0.011 m <br />) +
distinct +  and connate +
1 cm10 mm <br />0.01 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
free +, connate +  and distinct +
subequal +
thread-like +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
[1-]2-3 times 2-fid +
Cnidoscolus angustidens +
Cnidoscolus +
species +
aristate;acuminate +
flaring +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +