Clematis pitcheri var. dictyota

(Greene) W. M. Dennis

Sida 8: 194. 1979.

Illustrated
Basionym: Clematis dictyota Greene Pittonia 5: 153. 1903
Treatment appears in FNA Volume 3.

Leaf-blade mostly 2-pinnate or 2-ternate; leaflets often deeply lobed, mostly 3-4 cm, somewhat leathery. Flowers: sepals mostly 2-4 × 1-3 cm; stamens with filaments and extended connectives usually usually glabrous, occasionally with a few hairs. 2n = 16.


Phenology: Flowering spring–fall (Apr–Sep).
Habitat: Rocky sites
Elevation: 1200-2300 m

Distribution

V3 406-distribution-map.gif

N.Mex., Tex., Mexico (Coahuila)

Discussion

In typical Clematis pitcheri var. dictyota, the stamen filaments and the extended anther connectives are glabrous or nearly so, whereas in typical C. pitcheri var. pitcheri they are pubescent. In some parts of the range of the species, however, these character states are not well correlated with leaflet size and thickness.

The names Clematis filifera Bentham and C. pitcheri var. filifera (Bentham) R.O. Erickson have generally been applied to this variety or to a taxon consisting in large part of this variety, but the type specimen is referable to C. pitcheri var. pitcheri (W. M. Dennis 1979).

Selected References

None.

Lower Taxa

None.

"appressed-pubescent" is not a number.

flattened +
James S. Pringle +
(Greene) W. M. Dennis +
cuneate +, truncate +  and cordate +
Clematis dictyota +
curved +  and straight +
nearly glabrous +  and more or less appressed-pubescent or silky +
plumose +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
scale-like;leaflike +
globose;cylindric +
bracteate +  and 3-7-flowered +
paired +  and solitary +
0 cm0 mm <br />0 m <br /> (15 cm150 mm <br />0.15 m <br />) +
N.Mex. +, Tex. +  and Mexico (Coahuila) +
1200-2300 m +
filiform +  and flattened +
bracteate +  and 3-7-flowered +
paired +  and solitary +
showy +  and inconspicuous +
ovoid +  and urn-shaped +
0 cm0 mm <br />0 m <br /> (15 cm150 mm <br />0.15 m <br />) +
sessile +  and aggregate +
flattened-ellipsoid;terete;flattened-ellipsoid;terete;lenticular +
Rocky sites +
2-ternate +  and 2-pinnate +
cordate +  and orbiculate oblong lanceolate or oblanceolate lobed or unlobed +
1 cm10 mm <br />0.01 m <br /> (11 cm110 mm <br />0.11 m <br />) +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
lanceolate;broadly ovate +
leathery +
1 cm10 mm <br />0.01 m <br /> (6 cm60 mm <br />0.06 m <br />) +
palmate +  and pinnate +
crispate +
expanded +
thin;wide +
1-many-flowered +
0 cm0 mm <br />0 m <br /> (15 cm150 mm <br />0.15 m <br />) +
distinct +
conspicuous +
spurred +, funnel--shaped +, cup-shaped +  and plane +
reduced +
Flowering spring–fall (Apr–Sep). +
5 +  and 150 +
unlobed +  and 2-5-lobed +
not arillate +  and stalked +
3 cm30 mm <br />0.03 m <br /> (4 cm40 mm <br />0.04 m <br />) +
whitish;pale;dark bluish or reddish purple +
not persistent +
distinct +
abaxially glabrous +  and silky hirsute or tomentose +
3 +  and 6 +
ovatelanceolate +
1.2 cm12 mm <br />0.012 m <br /> (3 cm30 mm <br />0.03 m <br />) +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Illustrated +
glabrous +  and short-pilose +
0 cm0 mm <br />0 m <br /> (400 cm4,000 mm <br />4 m <br />) +
persistent +
not glaucous;abaxially nearly glabrous;densely pubescent +
Viorna pitcheri +
Clematis pitcheri var. dictyota +
Clematis pitcheri +
variety +
appressed-puberulent +
acuminate +
annual +  and perennial +