genusReseda

Reseda alba

Linnaeus

Sp. Pl. 1: 449. 1753.

Common names: White mignonette mignonette-blanche réséda blanc
WeedyIntroducedIllustrated
Treatment appears in FNA Volume 7. Treatment on page 192. Mentioned on page 191.
Revision as of 12:05, 30 July 2020 by imported>Volume Importer
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)

Plants annual or biennial (perennial), 30–90 cm, glabrous. Stems erect, usually branched. Leaves (cauline shorter distally); blade ovate to ovate-oblong, pinnatisect (lobes 4–15 pairs, lanceolate-oblong), 3–15 × 3–5 cm, (base attenuate), margins entire or repand to raggedly toothed, surfaces glabrous. Racemes (dense) 20–40 cm; bracts persistent, lanceolate-linear, 3–3.5 mm. Pedicels 2–8 mm. Flowers: sepals persistent, 5 (–6), not reflexed in fruit, lanceolate-linear, 2–2.5 mm; petals 5 (–6), white, (3.5–) 4–6 mm, subrounded-clawed, adaxial ones 3-lobed; stamens 10–14; filaments persistent, 2–3.5 mm, glabrous; intrastaminal nectary-discs papillose; anthers 1–2 mm; placenta entire. Capsules erect, 4-carpelled, cylindric to ovoid-oblong, 8–14 × 4–6 mm, apically 4-toothed, glabrous or ribs papillose. Seeds 1–1.3 mm, dull, finely papillose. 2n = 40.


Phenology: Flowering May–Aug(-Nov).
Habitat: Muddy shores, dunes, waste places, railroad ballasts, roadsides, basic soils
Elevation: 0-800 m

Distribution

V7 246-distribution-map.gif

Introduced; B.C., Man., Ont., Que., Sask., Ark., Calif., Conn., Del., Ill., Kans., Maine, Mass., Mich., N.H., N.J., N.Y., Ohio, Oreg., Pa., Vt., Wash., s Europe, sw Asia, n Africa, also in South America, s Africa, Australia

Discussion

Selected References

None.

Lower Taxa

None.
... more about "Reseda alba"
colporate +, colpate +, binucleate +  and tetrasporangiate +
3-aperturate +, introrse +  and dehiscing +
0.1 cm1 mm <br />0.001 m <br /> (0.2 cm2 mm <br />0.002 m <br />) +
Santiago Martín-Bravo +, Gordon C. Tucker +  and Thomas F. Daniel +
Linnaeus +
3 cm30 mm <br />0.03 m <br /> (15 cm150 mm <br />0.15 m <br />) +
lobed +  and pinnatisect +
ovate +  and ovate-oblong +
3 cm30 mm <br />0.03 m <br /> (5 cm50 mm <br />0.05 m <br />) +
persistent +
lanceolate-linear +
0.3 cm3 mm <br />0.003 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1.4 cm14 mm <br />0.014 m <br />) +
4-toothed +, cylindric +  and ovoid-oblong +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
White mignonette +, mignonette-blanche +  and réséda blanc +
B.C. +, Man. +, Ont. +, Que. +, Sask. +, Ark. +, Calif. +, Conn. +, Del. +, Ill. +, Kans. +, Maine +, Mass. +, Mich. +, N.H. +, N.J. +, N.Y. +, Ohio +, Oreg. +, Pa. +, Vt. +, Wash. +, s Europe +, sw Asia +, n Africa +, also in South America +, s Africa +  and Australia +
0-800 m +
0.2 cm2 mm <br />0.002 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
ovoid +, subglobose +, ovoid-oblong +  and cylindric +
Muddy shores, dunes, waste places, railroad ballasts, roadsides, basic soils +
alternate +  and rosulate +
basal +  and cauline +
repand +  and raggedly toothed +
[2-]3-4[-5]-carpelled +
[6 +, 4 +  and 3 +
campylotropous +
0.2 cm2 mm <br />0.002 m <br /> (0.8 cm8 mm <br />0.008 m <br />) +
heteromorphic +
0.35 cm3.5 mm <br />0.0035 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
connate +  and distinct +
subrounded-clawed +
0.4 cm4 mm <br />0.004 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
Flowering May–Aug(-Nov). +
20 cm200 mm <br />0.2 m <br /> (40 cm400 mm <br />0.4 m <br />) +
papillose +
not arillate +
dark-brown;black +
papillose +
reniform +
0.1 cm1 mm <br />0.001 m <br /> (0.13 cm1.3 mm <br />0.0013 m <br />) +
persistent +
not reflexed +
lanceolate-linear +
unequal +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
Weedy +, Introduced +  and Illustrated +
Reseda alba +
species +
chartaceous +  and membranous +
biennial +  and annual +
8] +, [7 +, 6 +  and 5 +