|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
AND IS MAINTAINED FOR ARCHIVAL PURPOSES ONLY
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 averaging 8 mm diam
Stem < 2.5 dm or ± 0
Leaf 25 mm wide; base generally colorless
Inflorescence: flowers 12; lowest 2 bracts opposite, outermost 3.99.5 cm, 39 mm wide
Flower: perianth golden yellow to cream or pale lavender to deep blue-purple, generally with darker veins, tube 3686 mm, upper part with a bowl-shaped enlargement, sepals 3.96.8 cm, 1216 mm wide; style branches 1933 mm, crests 818 mm, stigmas triangular
Ecology: Common. Open to partly shaded slopes
Elevation: generally < 1000 m.
Bioregional distribution: Cascade Range Foothills, n&c Sierra Nevada Foothills, Inner North Coast Ranges, San Francisco Bay Area. Highly variable
Horticultural information: DRN, DRY: 6, 17 &SHD: 7, 8, 9, 14, 15, 16 &IRR: 18.