|Jepson Flora Project: Jepson Interchange|
|TREATMENT FROM THE JEPSON MANUAL (1993)||
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California
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Perennial, bulbed, cormed, or rhizomed
Stem generally erect
Leaves generally basal (a few cauline), 2-ranked, ± linear, generally grass-like, generally sharply folded along midrib; bases overlapping, sheathing
Inflorescence: spike, raceme, panicle, ± terminal, or flowers solitary; bracts ± like leaf bases, sheathing
Flower generally bisexual, generally radial; hypanthium fused to ovary; perianth parts generally fused into tube above ovary, generally petal-like, in 2 series of 3, outer (sepals) generally ± like inner (petals); stamens 3, generally attached to sepals, filaments fused below into a tube or not; ovary inferior, 3-chambered, placentas generally axile, style 1, each of 3 branches entire or 2-branched or -lobed, petal-like or not, with stigma on under surface instead of at tip
Fruit: capsule, loculicidal
Genera in family: 80 genera, ± 1500 species: worldwide, especially Africa; many cultivated (e.g., Iris, Gladiolus, Crocus, Freesia ).
Perennial; rhizome creeping or ± tuber-like
Inflorescence: flowers 1many
Flower: perianth parts clawed, sepals (wider, spreading or reflexed) unlike petals (generally narrower, erect); style branches ± petal-like, arching over stamens, each with flat, scale-like stigma on surface facing stamen, just below generally 2-lobed tip (crest)
Seeds compressed, pitted
Species in genus: Perhaps 150 species: generally n temp
Etymology: (Greek: rainbow, from flower colors)
Reference: [Lenz 1958 Aliso 4:172; Clarkson 1959 Madroño 15:115122]
Hybrids are common, especially in I. tenax alliance; some authors lump taxa recognized here.
Horticultural information: Pacific Iris hybrids; CVS.
Rhizome 59 mm diam
Stem 0.54 dm
Leaf generally 210 mm wide
Inflorescence: flowers 13; lowest 2 bracts generally alternate, up to 9 cm apart, lowermost 512.5 cm, 39 mm wide
Flower: perianth generally pale yellow or cream with darker veins, sometimes deep yellow, lavender, purple, or bluish violet, tube 515 mm, sepals 47 cm, 1427 mm wide, petals 3.56 cm, 514 mm wide, narrowly oblanceolate; style branches 1630 mm, crests 515 mm, stigmas triangular
Ecology: Open or partly shaded slopes
Elevation: 6002300 m.
Bioregional distribution: s Cascade Range, Sierra Nevada, San Gabriel Mountains, San Bernardino Mountains, San Jacinto Mountains.
Leaf 35 mm wide; base faint pink
Inflorescence: flowers 2; lowest bract 57 cm, 36 mm wide
Flower: perianth pale creamy yellow, tube 1115 mm, sepals conspicuously golden veined
Ecology: Common. Yellow-pine forests
Elevation: 10001400 m.
Bioregional distribution: s Cascade Range, n&c Sierra Nevada
Horticultural information: DRN: 17 &SHD, IRR: 1, 2, 3, 7, 9, 14, 15, 16, 17, 18.