Iris hookeri Penny ex Loudon

Species

Angiosperms > Asparagales > Iridaceae > Iris

Characteristics

Rhizomes many-branched, forming dense, cespitose clumps with many crowded fans with persistent old leaf bases, 3–5 × 1.3–1.5 cm. Stems several to many from a single clump of fans, simple, 0.5–6 dm. Leaves: basal erect or strongly ascending, blade 1–5.2 dm × 0.5–1.4 cm; cauline 2–4, proximal 2–3 similar to basal leaves, distalmost leaf occasionally borne nearly midway on stem, clasping, blade bracteiform, lanceolate, 0.5–1.5 dm. Inflorescence units 1–2-flowered; spathes herbaceous, lanceolate to oblong-ovate, 2.5–6 cm, firm, outer spathe apex acute, inner similar or scarious at apex. Flowers: perianth deep to pale blue or blue-violet; floral tube 0.5–0.75 cm; sepals broadly rounded, 2.5–4 cm wide, base strongly attenuate to claw, signal diffuse white basal patch; petals much reduced to insignificant, involute or tubular rudiments, 1–2 cm, apex with short bristle, mostly hidden by sepal bases; ovary green or flushed purple, acutely trigonal; style white with purple keel, 2–5 cm, crests overlapping, 2-lobed, subquadrate, margins coarsely serrate; stigmas rounded-triangular, margins entire; pedicel 2.5–4 cm. Capsules thin walled, trigonal, with rounded angles and grooved sides, 2–4 cm, apex blunt. Seeds in 2 rows per locule, dark brown with prominent white raphe, compressed-pyriform, 4–6 mm, lustrous. 2n = 38.
Life form perennial
Growth form herb
Growth support free-standing
Foliage retention deciduous
Sexuality hermaphrodite
Pollination -
Spread -
Mature width (meter) -
Mature height (meter) 0.05 - 0.6
Root system 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 5-9
Soil humidity 1-5
Soil texture 3-4
Soil acidity 2-6
Soil nutriment -
Hardiness (USDA) 6-8

Usage

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

Cultivation

Can be grown by divisions or seedlings. Seeds needs stratification.
Mode divisions seedlings
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

Iris hookeri unspecified picture

Distribution

Iris hookeri world distribution map, present in Canada, France, and United States of America

Identifiers

LSID urn:lsid:ipni.org:names:438707-1
WFO ID wfo-0000783449
COL ID 3PZRW
BDTFX ID -
INPN ID 761993
Wikipedia (EN) Link
Wikipedia (FR) Link

Synonyms

Iris hookeri Iris canadensis Xiphion tripetalum Iris hookeri f. pallidiflora Iris hookeri f. zonalis Iris tripetala Iris hookeri f. hookeri Limniris hookeri Iris setosa var. canadensis Iris setosa subsp. pygmaea Iris setosa f. pallidiflora Iris setosa f. zonalis