Iris chrysophylla Howell

Yellowleaf iris (en)

Species

Angiosperms > Asparagales > Iridaceae > Iris

Characteristics

Rhizomes compact, dark brown, slender, 0.5–0.6 cm diam., covered with old leaf bases; roots few, fibrous. Stems simple, solid, slender, 0.25–2 dm. Leaves: basal with blade light green, pink or red-tinged basally, finely ribbed, linear-acute, 2.5–5 dm × 0.3–0.5 cm, somewhat glaucous, margins not thickened; cauline 1–3, imbricated, blade bractlike, inflated. Inflorescence units usually 2–flowered; spathes sometimes flushed pink or purple apically, lanceolate to linear-lanceolate, 5–10 cm × 3–7 mm, unequal, outer much shorter and narrower than inner, herbaceous, margins often scarious, apex acute. Flowers: perianth cream or very pale yellow, with deeper yellow or lavender veins; floral tube linear, slender, 4.5–12 cm; sepals with bluish tinge and veins, oblanceolate, 4.6–7 × 1–2 cm, base gradually attenuate; petals lanceolate, 3–5.5 × 0.6–1.2 cm, base gradually attenuate, apex emarginate; ovary 1–1.8 cm, base abruptly attenuate into pedicel (when present), apex gradually acuminate into floral tube; style 2–3 cm, crests 1.5–2 cm, sometimes exceeding arms, apex narrowly pointed; stigmas tongue-shaped, margins entire; pedicel absent or 0.5–1 cm at anthesis. Capsules sometimes on elongated pedicel, oblong, round in cross section, sharply beaked, 2–3 cm. Seeds buff, slightly compressed. 2n = 40.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention -
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.03 - 0.2
Root system fibrous-root rhizome
Rooting depth (meter) -
Root diameter (meter) -
Flower color
Blooming months
JanFebMar
AprMayJun
JulAugSep
OctNovDec
Fruit color -
Fruiting months -
Nitrogen fixer -
Photosynthetic pathway -

Environment

Light 7-9
Soil humidity 1-5
Soil texture 3-4
Soil acidity -
Soil nutriment -
Hardiness (USDA) -

Usage

Uses -
Edible -
Therapeutic use -
Human toxicity -
Animal toxicity -

Cultivation

Mode -
Germination duration (days) 30 - 545
Germination temperacture (C°) 15 - 21
Germination luminosity -
Germination treatment stratification
Minimum temperature (C°) -
Optimum temperature (C°) -
Size -
Vigor -
Productivity -

Images

Flower

Iris chrysophylla flower picture by Mike Mike Zeller (cc-by-sa)
Iris chrysophylla flower picture by Nicole Nicole (cc-by-sa)

Distribution

Iris chrysophylla world distribution map, present in United States of America

Identifiers

LSID urn:lsid:ipni.org:names:130037-2
WFO ID wfo-0000783205
COL ID 3PZLF
BDTFX ID -
INPN ID -
Wikipedia (EN) Link
Wikipedia (FR)

Synonyms

Iris chrysophylla Limniris chrysophylla Iris tenax subsp. chrysophylla