Jepson Flora Project: Jepson Interchange    

 
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Jepson Interchange (more information)
©Copyright 1993 by the Regents of the University of California

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  • Up-to-date information about California vascular plants is available from the Jepson eFlora.

IRIDACEAE

IRIS FAMILY

Elizabeth McClintock, except as specified

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
Seeds few–many
Genera in family: 80 genera, ± 1500 species: worldwide, especially Africa; many cultivated (e.g., Iris, Gladiolus, Crocus, Freesia ).

GLADIOLUS

Perennial; corm rounded, with fibrous covering
Stem generally unbranched
Inflorescence: generally spike; flowers each subtended by 2 leathery, entire bracts
Flower generally bisexual, bilateral; perianth funnel-shaped, tube ± curved, upper 3 lobes > lower 3; stamens attached to base of perianth tube, arching to upper lobes; style ± = stamens, branches each entire, arched
Seeds many, winged or not
Species in genus: ± 180 species: especially Africa, also Madagascar, Eur
Etymology: (Latin: little sword, from leaf shape)
Reference: [Lewis and others 1972 J S Africa Bot, Suppl vol 10]
Many species and hybrids cultivated as ornamental.

Introduced

G. tristis L.


Stem 50–70 cm, < or = leaves
Inflorescence: flowers generally 3–4(8)
Flower bisexual; stamens, style included in perianth tube
Ecology: Uncommon. Disturbed ground, along roadsides
Elevation: < 800 m.
Bioregional distribution: South Coast
Distribution outside California: native to s Africa

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