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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 December 03, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on December 03, 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
click for enlargement
© 2014 Aaron E. Sims and CNPS
Brasenia schreberi
click for enlargement
© 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

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. Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues. Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
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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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Data provided by the participants of the Consortium of California Herbaria.
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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.