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Damasonium californicum

Higher Taxonomy
Family: AlismataceaeView DescriptionDichotomous Key

Common Name: WATER-PLANTAIN FAMILY
Habit: Annual, perennial herb from caudices, corms, stolons, rhizomes, or tubers, aquatic (+- emergent or on mud); roots fibrous, septate or not; monoecious, dioecious, or flowers bisexual. Stem: caudex short. Leaf: basal, simple, palmately veined, floating or not; submersed generally linear to ovate; emergent linear to sagittate. Inflorescence: generally scapose, umbel-, raceme-, or panicle-like; flowers, branches whorled. Flower: radial; sepals 3, generally green, generally persistent; petals 3, generally > sepals, white or pink; stamens 6--many; pistils 6--many, free or +- fused at base. Fruit: achene, generally compressed, beaked.
Genera In Family: +- 12 genera, 75--100 species: especially tropics, subtropics.
eFlora Treatment Author: Charles E. Turner, Robert R. Haynes & C. Barre Hellquist
Scientific Editor: Thomas J. Rosatti.
Genus: DamasoniumView Description 

Habit: Perennial herb; roots not septate; flowers bisexual. Leaf: blade linear to ovate, tapered to base or petioled, base tapered to rounded. Inflorescence: peduncle generally smooth. Flower: receptacle +- flat; sepals generally 3.5--6 mm; petals cut, white to pink; stamens 6; pistils 6--15, in 1 whorl, +- fused at base, ovules 1[2]. Fruit: generally +- spreading, laterally compressed, sides generally opaque, abaxially +- rounded, ribbed; beak >= body, generally terminal.
Species In Genus: +- 5 species: North America, Europe, Australia. Etymology: (Greek: ancient name)

Damasonium californicum Torr. ex Benth.
NATIVE
Leaf: 5--35 cm; blade 3--9 cm, 0.5--3 cm wide, generally < petiole, linear to narrowly ovate. Inflorescence: generally > leaves; pedicels 15--65 mm in fruit, spreading to ascending. Flower: petals 6--10 mm, basal spot yellow; anthers +- red. Fruit: body 3--5.5 mm; beak 3--6 mm.
Ecology: Ponds, vernal pools, streams; Elevation: < 1700 m. Bioregional Distribution: NCoRI, n SNF, GV, nw SnFrB, MP; Distribution Outside California: to Oregon, Idaho, Nevada. Flowering Time: Late summer
Synonyms: Machaerocarpus californicus (Torr. ex Benth.) Small
eFlora Treatment Author: Charles E. Turner, Robert R. Haynes & C. Barre Hellquist
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Citation for this treatment: Charles E. Turner, Robert R. Haynes & C. Barre Hellquist 2016. Damasonium californicum, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=22313, accessed on December 10, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on December 10, 2016.


Damasonium californicum
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© 2009 George W. Hartwell
Damasonium californicum
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© 2008 Steve Matson
Damasonium californicum
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© 2003 Steve Matson
Damasonium californicum
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© 2008 Aaron Schusteff
Damasonium californicum
click for enlargement
© 2009 George W. Hartwell
Damasonium californicum
click for enlargement
© 2009 George W. Hartwell

More photos of Damasonium californicum in CalPhotos


Geographic subdivisions for Damasonium californicum:
NCoRI, n SNF, GV, nw SnFrB, MP;
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.