Neviusia alabamensis

A. Gray

Mem. Amer. Acad. Arts, n. s. 6: 374, plate 30. 1859.

Common names: Alabama snow-wreath
Conservation concernEndemicIllustrated
Treatment appears in FNA Volume 9. Treatment on page 388.

Leaves: petiole 2–9 mm; blade ovate to ovatelanceolate, 3–7 × 2–4.5 cm, base attenuate to obtuse, margins doubly serrate, some distal leaves only finely serrate, apex acuminate to acute, surfaces subsericeous. Pedicels 13–32 mm. Flowers: sepals ovate to lanceolate or elliptic, 5–9 (–12) × 3–5 mm; petals 0; stamens 100+; carpels 2–5, styles 4.5–6 mm. 2n = 18.


Phenology: Flowering early–mid spring; fruiting late spring.
Habitat: Steep limestone, sandstone, and shale slopes with little soil
Elevation: 100–500 m

Distribution

V9 648-distribution-map.jpg

Ala., Ark., Ga., Miss., Tenn.

Discussion

Of conservation concern.

Neviusia alabamensis has been recommended for federal listing under the Endangered Species Act. The species is known currently from five southeastern states; a population known earlier from Poplar Bluff, Missouri, has been extirpated (D. M. Moore 1956).

The disjunct populations appear to be relicts from a former more widespread distribution and perhaps were associated with mesophytic forests during the Tertiary (A. A. Long 1989). It also has been suggested that Neviusia alabamensis is an epibiotic taxon that survived the Mississippi embayment since the late Paleozoic or early Mesozoic (D. M. Moore 1956; D. D. Horn and P. Somers 1981).

Neviusia alabamensis has been cultivated as far north as Boston and Chicago since its discovery (J. R. Shevock et al. 1992). It has been misidentified as Physocarpus opulifolius (D. M. Moore 1956).

Selected References

None.

Lower Taxa

None.
... more about "Neviusia alabamensis"
subsericeous +  and strigose +
sparsely strigose +  and subsericeous +
Alice L. Heikens +
A. Gray +
reddish-brown +  and grayish +
exfoliating +
compound +  and simple +
opposite +  and alternate +
attenuate +  and obtuse +
bright green +
3 cm30 mm <br />0.03 m <br /> (7 cm70 mm <br />0.07 m <br />) +
ovate +  and ovatelanceolate +
2 cm20 mm <br />0.02 m <br /> (9 cm90 mm <br />0.09 m <br />) +
2cm +  and 4.5cm +
free +  and distinct +
Alabama snow-wreath +
Ala. +, Ark. +, Ga. +, Miss. +  and Tenn. +
not +  and aggregated +
100–500 m +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
odorless +
unisexual +  and bisexual +
not +  and aggregated +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
not +  and aggregated +
not +  and aggregated +
Steep limestone, sandstone, and shale slopes with little soil +
0.1 cm1 mm <br />0.001 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
glabrate +  and glabrous +
crassinucellate +
opposite +  and alternate +
deciduous +  and winter-persistent +
inferior +  and superior +
biseriate +  and clustered +
collateral +  and marginal +
1.3 cm13 mm <br />0.013 m <br /> (3.2 cm32 mm <br />0.032 m <br />) +
0 (?) +  and 4 (?) +
free +  and distinct +
2 +  and 1 +
0.2 cm2 mm <br />0.002 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
Flowering early–mid spring +  and fruiting late spring. +
adnate +, free +, connate +  and distinct +
Mem. Amer. Acad. Arts, n. s. +
not arillate +
0.9 cm9 mm <br />0.009 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
persistent +
free +  and distinct +
spreading +  and reflexed +
ovate +  and lanceolate or elliptic +
0.3 cm3 mm <br />0.003 m <br /> (0.5 cm5 mm <br />0.005 m <br />) +
tubelike +
Conservation concern +, Endemic +  and Illustrated +
free +  and distinct +
branched +  and simple +
1 +  and 6 +
slender +
persistent +
distinct +
subapical +
elongate +
0.45 cm4.5 mm <br />0.0045 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
subsericeous +
Neviusia alabamensis +
Neviusia +
species +
inconspicuous +
17 +, 15 +, 9 +  and 8 +