|University of California, Berkeley|
|Directory News Site Map Home|
|Jepson eFlora: Taxon page
Key to families | Table of families and genera
Indexes to all accepted names and synonyms:
| A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z |
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 ; stamens 1–2; ovary inferior, chamber 1, styles 2. Fruit: drupe.
1 genus, ± 35 species: Mexico, southern hemisphere, Hawaii; several cultivated. Rhizome scales previously interpreted as stipules. —Scientific Editor: Thomas J. Rosatti.
(J.E. Gunner, Norwegian bishop, botanist, 1718–1773) [Wanntorp & De Craene 2005 Int J Plant Sci 166:945–953] Plants obtain fixed nitrogen from cyanobacteria (Nostoc) living just under surface of rhizomes, roots, in the only such symbiosis in angiosperms.
Rhizome scales 10–20 cm, deeply cut. Leaf: covered with stiff, hard prickles; petiole 1–1.5 m; blade 1–2 m, ± round, ± concave abaxially, thick, rough, main lobes palmate, teeth irregular, veins prominent, especially abaxially. Inflorescence: arising ± from ground, 50–75 cm, < 10 cm wide, ± conic; spikes many, dense, 2–5 cm, stout; peduncle generally 2–20 cm. Flower: style < 1.2 mm, >= sepals. Fruit: many, 1–2 mm, ± red, ovate to oblong.
Uncommon. Disturbed, shaded, damp areas; < 100 m. Central Coast (Marin, San Francisco cos.); native to Chile. May spread aggressively by seeds, rhizomes. Jul–Oct WEEDINESS: Potentially problematic weed [Online Interchange]
Previous taxon: Gunnera
Next taxon: Haloragaceae
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Sep 1 2015
Citation for this treatment: [Author of taxon treatment] 2013. Gunnera, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=27405, accessed on Sep 1 2015
Copyright © 2014 Regents of the University of California
We encourage links to these pages, but the content may not be downloaded for reposting, repackaging, redistributing, or sale in any form, without written permission from The Jepson Herbarium.
|Geographic subdivisions indicated for the distribution of Gunnera tinctoria|| Markers link to CCH specimen records. If the markers are obscured, reload the page [or change window size and reload]. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.
READ ABOUT YELLOW FLAGS
(Note: any qualifiers in the taxon distribution description, such as 'northern', 'southern', 'adjacent' etc., are not reflected in the map above, and in some cases indication of a taxon in a subdivision is based on a single collection or author-verified occurence).
View elevation by latitude chart
| Data provided by the participants of the Consortium of California Herbaria.
View all CCH records
CCH collections by month