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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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 ).

WATSONIA

Perennial; corms rounded, coating fibrous
Inflorescence: spike, branched below or not; flowers facing in 2 opposite directions, appearing to be in 1 plane, each subtended by 2 leathery, entire bracts
Flower asymmetric, sessile; perianth funnel-shaped, tube bent, lobes ± equal, oblong or lanceolate; stamens attached to perianth throat; style ± = stamens, branches each 2-lobed
Fruit oblong
Species in genus: ± 60 species: s Africa
Etymology: (Sir William Watson, English botanist-physician, 1715–1787)

Introduced

W. meriana (L.) Mill.


Stem 1–1.5 m
Leaves ± 5–6, < 60 cm, < 6 cm wide; axils with bulblets after flower
Inflorescence 10–15-flowered, ± open
Flower: perianth 6–7 cm, brick-red, tube 4–5 cm, sharply bent, lobes ± 2.5 cm, oblong to obovate. Uncommon, but may be locally abundant
Ecology: Disturbed roadsides, fields, waste places
Elevation: < 50 m.
Bioregional distribution: North Coast
Distribution outside California: native to s Africa
Reproduces by bulblets, can be invasive.

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bioregional map for WATSONIA%20meriana being generated
 
YOU CAN HELP US make sure that our distributional information is correct and current. If you know that a plant occurs in a wild, reproducing state in a Jepson bioregion NOT highlighted on the map, please contact us with that information. Please realize that we cannot incorporate range extensions without access to a voucher specimen, which should (ultimately) be deposited in an herbarium. You can send the pressed, dried collection (with complete locality information indicated) to us (e-mail us for details) or refer us to an accessioned herbarium specimen. Non-occurrence of a plant in an indicated area is difficult to document, but we will especially value your input on those types of possible errors (see automatic conversion of distribution data to maps).

Retrieve Jepson Interchange Index to Plant Names entry for Watsonia meriana
Retrieve dichotomous key for Watsonia
Overlay Consortium of California Herbaria specimen data by county on this map
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