|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, glabrous; monoecious; rhizomes or stolons long; colonial, in wet soil to aquatic. Stem: aerial stem 1, ± cylindric. Leaf: basal and cauline, alternate, 2-ranked, spongy; sheath open; ligule 0; blade ± linear. Inflorescence: spike-like or of spheric, unisexual heads; staminate flowers or heads distal to pistillate ones. Flower: small, densely-packed. Staminate flower: filaments fused proximally. Pistillate flower: pistil 1, ovary superior, ovules 1–2(4). Fruit: follicle, splitting in water, or drupe-like.
2 genera, ± 32 species: worldwide. —Scientific Editors: Douglas H. Goldman, Bruce G. Baldwin.
Key to Typhaceae
Plants generally submerged except inflorescence, or vegetative when all-submerged (emergent to ± terrestrial); rhizomes, stolons slender. Stem: unbranched proximal to inflorescence. Leaf: blade flat to convex, 3-sided, or abaxially keeled. Inflorescence: heads axillary and terminal, 2–60+; bracts leaf-like, distal reduced. Staminate flower: stamens 2–8. Pistillate flower: ovary chambers 1–2(4), stigmas generally 1(2–4). Fruit: drupe-like, spongy; perianth parts attached, style and generally stigmas persistent as beak; floating, water-dispersed.Key to Sparganium
± 17 species: northern temperate, western Pacific. (Probably Greek: swaddling band, for strap-shaped leaves) [Kaul 2000 FNANM 22:271–277] Fruit head diam including fruit beaks; fruit body lengths except beak, stalk-like base; beak lengths including stigmas.
Unabridged references: [Cook & Nicholls 1986 Bot Helv 96:213–267, 1987 Bot Helv 97:1–44]
Plants generally terrestrial to emergent, erect, to 75 cm, or aquatic and limp, to 1(2) m, distal parts floating. Leaf: widest blades 5–13 mm wide, generally 3-angled or keeled proximally; on vegetative plants in deep or fast-flowing water to 2.2 m, 18 mm wide, flat, generally not keeled. Inflorescence: emergent; main axis branches 0; staminate heads 3–7, well separated to crowded in flower; pistillate heads 1–6, proximal in axils, peduncled, distal sessile, 1.3–2.5 cm diam in fruit. Flower: perianth parts not dark-thickened distally; stigma 1–2(2.5) mm. Fruit: body 3.5–4 mm, 2–2.5 mm wide, ellipsoid to fusiform, tapered distally, beak 3–4 mm.
2n=30. ± Unpolluted freshwater habitats; < 2600 m. North Coast, Klamath Ranges, Outer North Coast Ranges, n&c High Sierra Nevada, San Bernardino Mountains, Modoc Plateau; to Alaska, northeastern North America; circumboreal. Locally common. Plants near coast generally robust, stiff, erect, in wet ground or shallow water; higher elevation inland plants generally slender, limp, ± submerged. Apparently intergrades with Sparganium angustifolium. Summer [Online Interchange]
Unabridged synonyms: [Sparganium angustifolium Michx. subsp. emersum (Rehmann) Brayshaw; Sparganium chlorocarpum Rydb.; Sparganium chlorocarpum var. acaule (Beeby) Fernald; Sparganium emersum subsp. acaule (Beeby) C.D.K. Cook & M.S. Nicholls]
Previous taxon: Sparganium angustifolium
Next taxon: Sparganium eurycarpum
Citation for the whole project: Jepson Flora Project (eds.) 2013. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on Sep 1 2014
Citation for this treatment: [Author of taxon treatment] 2013. Sparganium, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=45025, accessed on Sep 1 2014
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 Sparganium emersum|| 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