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Brasenia schreberi

Higher Taxonomy
Family: CabombaceaeView DescriptionDichotomous Key

Common Name: WATERSHIELD FAMILY
Habit: Perennial herb, aquatic, rhizomes in mud. Stem: elongate, leafy, ends floating. Leaf: of 2 kinds: submersed, palmately dissected, opposite [whorled], short-petioled, not peltate; floating, simple, alternate, petioled, peltate, entire; stipules 0. Inflorescence: flowers 1 on long axillary peduncles, generally on or above water surface. Flower: bisexual, parts +- free; sepals, petals each 3[4], alternate, persistent; stamens 3--6 or 18--36(51), filaments slender, anthers opening lengthwise; carpels [1]2--18, ovaries superior, 1-chambered, ovules [1]2--3[5]. Fruit: achene- or follicle-like, indehiscent. Seed: 1--3, aril 0.
Genera In Family: 2 genera, 6 species: temperate, tropical America, Africa, eastern Asia, Australia; some Cabomba species cultivated for aquaria. Note: Separation from Nymphaeaceae (carpels fused, fruits berry-like) confirmed by molecular data (Les et al. 1999 Syst Bot 24:28--46).
Unabridged Note: Pollinated by wind (Brasenia) or insects (Cabomba).
eFlora Treatment Author: Thomas J. Rosatti
Scientific Editor: Bruce G. Baldwin, Robert E. Preston.
Genus: BraseniaView Description 

Common Name: WATERSHIELD

Species In Genus: 1 sp. Etymology: (Christoph Brasen, 1738--1774, Danish surgeon and plant collector, leader of the 1771 missionary expedition that established the Moravian mission of Nain on the coast of Labrador (Charters & Hollombe, pers. comm.))

Brasenia schreberi J.F. Gmel.
NATIVE
Habit: Submersed parts covered with thick mucilage. Stem: slender, 3--20 dm, branching, red-brown. Leaf: centrally peltate; blade << petiole, 3.5--12(13.5) cm, 2--8 cm wide, elliptic to ovate, +- entire. Inflorescence: flowers 1 in axils. Flower: perianth 10--20 mm, +- red-purple or purple-brown; petals +- > sepals, linear-oblong; filaments thread-like; carpels (2)4--18, stigmas linear-decurrent. Fruit: 6--8(10) mm, oblong, leathery. Seed: 1--2. Chromosomes: 2n=80.
Ecology: Ponds, slow streams; Elevation: < 2200 m. Bioregional Distribution: KR, NCoR, CaRH, SNH, ScV, MP (exc Wrn); Distribution Outside California: to Alaska, Montana; eastern North America, Central America, South America, Africa, eastern Asia, eastern Australia. Flowering Time: Apr--Oct
eFlora Treatment Author: Thomas J. Rosatti
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

Previous taxon: Brasenia
Next taxon: Cabomba

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botanical illustration including Brasenia schreberi

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Citation for this treatment: Thomas J. Rosatti 2016. Brasenia schreberi, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=16062, accessed on April 29, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on April 29, 2016.


Brasenia schreberi
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© 2014 Aaron E. Sims and CNPS
Brasenia schreberi
click for enlargement
© 2014 Aaron E. Sims and CNPS
Brasenia schreberi
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© 2008 Dean Kelch
Brasenia schreberi
click for enlargement
© 2014 Aaron E. Sims and CNPS
Brasenia schreberi
click for enlargement
© 2014 Aaron E. Sims and CNPS
Brasenia schreberi
click for enlargement
© 2014 Aaron E. Sims and CNPS

More photos of Brasenia schreberi in CalPhotos


Geographic subdivisions for Brasenia schreberi:
KR, NCoR, CaRH, SNH, ScV, MP (exc Wrn);
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.
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map of distribution 1
(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).

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CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa.
Blue line denotes eFlora flowering time.