Iris fulva

Ker Gawler

Bot. Mag. 36: plate 1496. 1812.

Common names: Copper iris
IllustratedEndemic
Synonyms: Iris fulvaurea Small
Treatment appears in FNA Volume 26. Treatment on page 392. Mentioned on page 373, 391, 393.

Rhizomes compact, greenish brown or sometimes red-tinged, many-branched, with ringlike scars of old leaves, 1.5–2 cm diam. Stems simple or sometimes 1–2-branched, solid, 3–9 dm. Leaves: basal arching distally, blade bright green, lightly ribbed, linear-ensiform, 6–10 dm × 1.5–2.5 cm; cauline subtending branches, blade 4.5–6 dm. Inflorescence units 1–2-flowered; spathes unequal, outer green, 10–12 cm, herbaceous, inner 6–8 cm, partly scarious. Flowers: perianth copper colored or reddish-brown (yellow in forma fulvaurea); floral-tube hollow to ovary, 2–2.5 cm; sepals widely spreading or arching downward, obovate, with 1–3 prominent veins, 4.5–5.5 cm, glabrous, often with lighter yellow basal signal; petals spreading or declining with sepals, 4–5 × 1.5–2 cm, base gradually attenuate, apex deeply emarginate; ovary green, hexagonal, 1.5–1.7 cm; style convex, not keeled, 1.8–2 cm, crests reflexed, rounded-triangular, margins shallowly toothed; stigmas 2-lobed, lobes pointed, margins entire; pedicel 2–4 cm. Capsules remaining green even after seeds mature, oblongelliptic, hexagonal in cross-section, with 6 equally spaced ribs, short beak, 4.5–8 × 2.5 cm. Seeds in 2 rows per locule, irregular, flattened, 10–15 mm, corky. 2n = 42.


Phenology: Flowering Apr–Jun.
Habitat: Shallow water or low wet areas

Distribution

V26 803-distribution-map.jpg

Ark., Ill., Ky., La., Miss., Mo., Tenn.

Discussion

Iris fulva hybridizes with I. brevicaulis to produce I. ×fulvala Dykes, which has reddish purple sepals; with I. giganticaerulea to produce I. ×vinicolor Small; and with I. savannarum to produce I. ×cacique (J. Berry) N. C. Henderson.

Selected References

None.

Lower Taxa

None.

"dm" is not declared as a valid unit of measurement for this property."dm" is not declared as a valid unit of measurement for this property. "dm" is not declared as a valid unit of measurement for this property."decreasing" is not a number."dm" is not declared as a valid unit of measurement for this property.

... more about "Iris fulva"
dehiscing +  and latrorse +
Norlan C. Henderson +
Ker Gawler +
Iris subsect. Hexagonae +
4.5cm;8cm +
bright green +
linear-ensiform +
1.5cm;2.5cm +
additional +
cordlike +
enlarging +
hexagonal +  and oblongelliptic +
Copper iris +
rounded-triangular +
monochasial +
Ark. +, Ill. +, Ky. +, La. +, Miss. +, Mo. +  and Tenn. +
distinct or;partly completely connate +
ridged +  and terete +
2 cm20 mm <br />0.02 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
sessile +  and pedicellate +
fragrant +
upward-facing +
hollow +, solid +, branched +  and simple +
flattened +, terete +  and cordlike +
indehiscent +  and loculicidal +
woody;firm;cartilaginous +
Shallow water or low wet areas +
multicellular +
distinct +
scale-like +
distinct +
conspicuous +
pointed +
hexagonal +
1.5 cm15 mm <br />0.015 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
4 cm40 mm <br />0.04 m <br /> (18 cm180 mm <br />0.18 m <br />) +
differentiated +
declining with sepals , 4-5×1.5-2 cm , base +  and spreading +
reduced +
Flowering Apr–Jun. +
many-branched +
red-tinged +  and greenish brown +
1.5 cm15 mm <br />0.015 m <br /> (2 cm20 mm <br />0.02 m <br />) +
heterogeneous +
ringlike +
tan;dark-brown +
conspicuously roughened +  and extensively corky +
4 +  and 20 +
flattened +
downward +, arching +  and spreading +
obovate +
expanding +
4.5 cm45 mm <br />0.045 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
persisting +
inner +  and outer +
unequal +
6 cm60 mm <br />0.06 m <br /> (8 cm80 mm <br />0.08 m <br />) +
Illustrated +  and Endemic +
monochasial +
solid +, 1-2-branched +  and simple +
not keeled +  and convex +
1.8 cm18 mm <br />0.018 m <br /> (?) +  and 2 cm20 mm <br />0.02 m <br /> (?) +
Iris fulvaurea +
Iris fulva +
Iris (sect. Limniris) ser. Hexagonae +
species +
connate +  and distinct +
scarious +
spathaceous +  and more-flowered +
1 +  and 3 +
hardened +  and papery +
unequal +