Neviusia

A. Gray

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

Common names: Snow-wreath
Conservation concernEndemic
Etymology: For Reuben Denton Nevius, 1827 – 1913 clergyman and amateur botanist
Treatment appears in FNA Volume 9. Treatment on page 387. Mentioned on page 386, 389.

Shrubs, 6–32 dm, ± strigose. Stems 1–6+, erect, slender; bark proximally grayish, distally reddish-brown, ± exfoliating in strips near base, decurrently ridged; short-shoots absent; unarmed; young stems reddish. Leaves winter-persistent, deciduous, cauline, alternate; stipules persistent, linear to awl-shaped, margins serrate; petiole present; blade bright green adaxially, ovate or ovatelanceolate to cordate, 2–9 cm, membranous, margins flat, shallowly lobed and coarsely serrate or doubly serrate, abaxial surface subsericeous to strigose, adaxial sparsely strigose to subsericeous. Inflorescences terminal, 2–10-flowered, subumbellate corymbs; bracts absent; bracteoles present. Pedicels present. Flowers appearing as leaves expand, odorless, 2.5–4 mm diam.; epicalyx bractlets 0; hypanthium flat, 1–3 mm diam., glabrous or glabrate; sepals 5, spreading to reflexed, elliptic to obovate or lanceolate, margins serrate (incised above middle); petals usually 0, rarely 1 or 2, white, oblanceolate; stamens 50–100+, equal to sepals (inner often shorter); torus inconspicuous; carpels 2–6, densely strigose, styles subapical, elongate, stigmas minute; ovule 1. Fruits aggregated achenes, 2–6, eccentrically ovoid, 3–4 mm, densely strigose; hypanthium persistent; sepals persistent, orientation in fruit unknown.

Distribution

w, se United States

Discussion

Species 2 (2 in the flora).

Selected References

None.

Key

1 Leaf margins doubly serrate, some distal leaves only finely serrate; sepals 5–9(–12) mm; petals 0; stamens 100+; styles 4.5–6 mm. Neviusia alabamensis
1 Leaf margins shallowly lobed and coarsely serrate; sepals 3.5–6 mm; petals usually 0, rarely 1–2; stamens 50+; styles 3 mm. Neviusia cliftonii
... more about "Neviusia"
subsericeous +  and strigose +
sparsely strigose +  and subsericeous +
Alice L. Heikens +
A. Gray +
reddish-brown +  and grayish +
exfoliating +
compound +  and simple +
opposite +  and alternate +
bright green +
ovatelanceolate +  and cordate +
2 cm20 mm <br />0.02 m <br /> (9 cm90 mm <br />0.09 m <br />) +
free +  and distinct +
Snow-wreath +
w +  and se United States +
not +  and aggregated +
For Reuben Denton Nevius, 1827 – 1913 clergyman and amateur botanist +
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 +
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 +
0 (?) +  and 4 (?) +
free +  and distinct +
2 +  and 1 +
adnate +, free +, connate +  and distinct +
Mem. Amer. Acad. Arts, n. s. +
not arillate +
persistent +
free +  and distinct +
spreading +  and reflexed +
elliptic +  and obovate or lanceolate +
tubelike +
Conservation concern +  and Endemic +
free +  and distinct +
branched +  and simple +
1 +  and 6 +
slender +
persistent +
distinct +
subapical +
elongate +
Neviusia +
Rosaceae tribe Kerrieae +
inconspicuous +
17 +, 15 +, 9 +  and 8 +