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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Lawrence R. Heckard

Annual, perennial herb, carnivorous, of moist or aquatic habitats
Stem a caudex (Pinguicula ) or filamentous with alternate or whorled branch systems in place of leaves (Utricularia )
Leaves 0 or in basal rosette, simple
Inflorescence: raceme, spike, 1-flowered or scapose
Flower bisexual; calyx 2-lipped, generally 4–5-lobed; corolla 2-lipped, 5-lobed, spurred at base, lower lip arched and generally pouched upward, blocking throat; fertile stamens 2, epipetalous; ovary superior, chamber 1, placenta generally free-central; stigma unequally 2-lobed, ± sessile
Fruit: capsule, round, generally 2-valved (sometimes irregularly dehiscent)
Seeds generally many, small
Genera in family: 4 genera, 200 species: worldwide, especially tropical.



Annual, perennial herb, generally aquatic
Stem submersed or creeping, uncoiling at tip, sometimes with claw-like appendages, with generally alternate green branch systems ("leaves") of ± linear or thread-like segments; bladders borne on stem or "leaves" trap small organisms when entrance hairs triggered; terminal, overwintering buds dispersed in some species
Leaves: true leaves 0
Inflorescence: raceme (rarely 1-flowered), bracted, emergent
Flower: calyx lips entire; corolla generally yellow, lower lip entire or 3-lobed, generally blocking throat, hairy, red-spotted, upper lip ± entire
Fruit generally circumscissile (or opening irregularly)
Species in genus: ± 180 species: worldwide, especially. tropical
Etymology: (Latin: little bag, from bladders)
Reference: [Ceska & Bell 1973 Madroño 22: 74–84]
Horticultural information: Pure water ponds; DFCLT.


U. intermedia Hayne

Stems both creeping (with bladders, without "leaves") and floating (with "leaves," generally without bladders); winter buds bristly; "leaves" dense where present, 3–15 mm, generally 3- parted at base, each part unequally 1–3-forked; ultimate segments < 20, ± linear, flat, margin bristly
Inflorescence 1–5-flowered; peduncle < 25 cm, < 1 mm wide; pedicel erect in fruit
Flower: corolla 10–18 mm; lower lip ± 2 X upper, slightly < cylindric, obtuse spur
Fruit rarely produced
Seed not seen
Chromosomes: 2n=44
Ecology: Uncommon. Shallow water
Elevation: 1200–2700 m.
Bioregional distribution: Cascade Range, High Sierra Nevada, Modoc Plateau
Distribution outside California: to Alaska, Utah, e N.America; circumboreal
See the CNPS Inventory for information about endangerment and rarity.
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bioregional map for UTRICULARIA%20intermedia 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 Utricularia intermedia
Retrieve dichotomous key for Utricularia
Overlay Consortium of California Herbaria specimen data by county on this map
Show other taxa with the same California distribution | Read about bioregions | Get lists of plants in a bioregion
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