Cottsia gracilis

(A. Gray) W. R. Anderson & C. Davis

Contr. Univ. Michigan Herb. 25: 163. 2007.

Illustrated
Basionym: Janusia gracilis A. Gray Smithsonian Contr. Knowl. 3(5): 37. 1852
Treatment appears in FNA Volume 12. Treatment on page 363.
Please click on the illustration for a higher resolution version.
Illustrator: Karin Douthit

Copyright: University of Michigan

Leaf-blades very narrowly lanceolate or elliptic, larger blades 12–40 (–50) × (1.5–) 3–7 (–9) mm, length 4–10 times width, base cuneate or rounded, apex acute, obtuse, or occasionally rounded, margins very often bearing few-to-many cilia or toothlike projections distally, surfaces persistently sericeous or sometimes glabrescent. Pedicels 4–8 mm, 0.7–1.8 times as long as peduncles. Samaras 9–15 (–17) mm, nut 1.5–2.5 × 3–4.5 mm. 2n = 40 (Mexico).


Phenology: Flowering and fruiting Mar–Oct(–Jan).
Habitat: Open rocky slopes and deserts.
Elevation: 300–1600(–2100) m.

Distribution

V12 1015-distribution-map.jpg

Ariz., N.Mex., Tex., Mexico (Baja California), Mexico (Baja California Sur), Mexico (Chihuahua), Mexico (Durango), Mexico (Nuevo León), Mexico (Sonora), Mexico (Zacatecas)

Discussion

Cottsia gracilis is widespread in Arizona, absent only from the northeastern part of the state, but otherwise in the flora area is restricted to southern New Mexico and trans-Pecos Texas.

Selected References

None.

Lower Taxa

None.
... more about "Cottsia gracilis"
subequal +
Rounded (?) +, Obtuse (?) +  and Acute (?) +
William R. Anderson† +
(A. Gray) W. R. Anderson & C. Davis +
rounded +  and cuneate +
Janusia gracilis +
Ariz. +, N.Mex. +, Tex. +, Mexico (Baja California) +, Mexico (Baja California Sur) +, Mexico (Chihuahua) +, Mexico (Durango) +, Mexico (Nuevo León) +, Mexico (Sonora) +  and Mexico (Zacatecas) +
300–1600(–2100) m. +
Open rocky slopes and deserts. +
2-armed +  and unicellular +
submedifixed +  and medifixed +
axillary +  and terminal +
4 cm40 mm <br />0.04 m <br /> (5 cm50 mm <br />0.05 m <br />) +
0.7 cm7 mm <br />0.007 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
1.2 cm12 mm <br />0.012 m <br /> (4 cm40 mm <br />0.04 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.15 cm1.5 mm <br />0.0015 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
parallel-rugose +
0.3 cm3 mm <br />0.003 m <br /> (0.45 cm4.5 mm <br />0.0045 m <br />) +
0.7-1.8 times as long as peduncles +
0.4 cm4 mm <br />0.004 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
Flowering and fruiting Mar–Oct(–Jan). +
Contr. Univ. Michigan Herb. +
1.5 cm15 mm <br />0.015 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
connate +  and distinct +
Illustrated +
free +, connate +  and distinct +
2 (?) +  and 5 (?) +
interpetiolar +
distinct +
cylindric +
glabrescent +  and sericeous +
Cottsia gracilis +
species +
2-4-flowered +
deciduous +, evergreen +  and perennial +
vine +, shrubby +  and twining +