Jepson eFlora: Taxon page
Vascular Plants of California
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Higher Taxonomy
Family: GunneraceaeView Description 

Habit: Perennial herb, often large, terrestrial [semi-aquatic]; rhizome often with large scales. Stem: +- 0. Leaf: simple, generally alternate, often large; stipules 0; blades < to > petioles, +- round to reniform or ovate, generally toothed or lobed. Inflorescence: panicle (generally spikes along 1° axis), terminal or from upper axils, large; flowers many, often pistillate below, staminate above, bisexual between. Flower: very small, unisexual or bisexual; sepals generally 2 [+- 0]; petals 2 [0]; stamens 1--2; ovary inferior, chamber 1, styles 2. Fruit: drupe.
Genera In Family: 1 genus, +- 35 species: Mexico, southern hemisphere, Hawaii; several cultivated. Rhizome scales previously interpreted as stipules.
eFlora Treatment Author: Livia Wanntorp & Elizabeth McClintock
Scientific Editor: Thomas J. Rosatti.

Etymology: (J.E. Gunner, Norwegian bishop, botanist, 1718--1773) Note: Plants obtain fixed nitrogen from cyanobacteria (Nostoc) living just under surface of rhizomes, roots, in the only such symbiosis in angiosperms.
Jepson eFlora Author: Livia Wanntorp & Elizabeth McClintock
Reference: Wanntorp & De Craene 2005 Int J Pl Sci 166:945--953
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Citation for this treatment: Livia Wanntorp & Elizabeth McClintock 2012, Gunnera, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on March 03, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora,, accessed on March 03, 2024.