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Sagittaria sanfordii
SANFORD'S ARROWHEAD

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: SagittariaView DescriptionDichotomous Key

Common Name: ARROWHEAD
Habit: Annual, perennial herb; roots septate; generally monoecious; scape generally straight at inflorescence. Leaf: petiole cylindric to 3-angled; submersed blades tapered to base; floating or emergent blades generally sagittate (linear to ovate). Inflorescence: lowest node generally with 3 pistillate flowers, those above generally staminate. Flower: sepals 3--10 mm, reflexed to appressed in fruit; petals generally entire. Staminate Flower: stamens 7--30. Pistillate Flower: receptacle convex; pistils many, spiralled on convex receptacle. Fruit: body generally 2--3.5 mm, strongly compressed, abaxially winged or ridged; beak generally lateral, spreading to erect.
Species In Genus: +- 30 species: worldwide, especially America. Etymology: (Latin: arrow, from leaf shape) Note: Some species weedy; tubers of some eaten by humans, wildlife; Sagittaria brevirostra Mack. & Bush reportedly persisting at Stafford Lake and Chileno Laguna, Marin Co.

Sagittaria sanfordii Greene
NATIVE
Habit: Perennial herb; tubers spheric. Leaf: emergent leaves with petioles +- blade-like, +- flat, or 3-angled, blades 14--25 cm, linear to lanceolate. Staminate Flower: filaments papillate. Pistillate Flower: pedicel recurved in fruit, thickened; sepals appressed in fruit. Fruit: side oil-streaked when fresh; beak erect, 0.2--0.6 mm.
Ecology: Ponds, ditches; Elevation: < 300 m. Bioregional Distribution: n NCo (Del Norte Co.), KR, CaRF, GV, n SCo (Ventura Co.). Flowering Time: May--Oct Note: Threatened by development.
eFlora Treatment Author: Charles E. Turner, Robert R. Haynes & C. Barre Hellquist
Jepson Online Interchange
Listed on CNPS Rare Plant Inventory

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botanical illustration including Sagittaria sanfordii

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Citation for this treatment: Charles E. Turner, Robert R. Haynes & C. Barre Hellquist 2016. Sagittaria sanfordii, in Jepson Flora Project (eds.) Jepson eFlora, http://ucjeps.berkeley.edu/cgi-bin/get_IJM.pl?tid=42633, accessed on February 08, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html, accessed on February 08, 2016.


Sagittaria sanfordii
click for enlargement
© 1991 Robert E. Preston, Ph.D.
Sagittaria sanfordii
click for enlargement
© 1991 Robert E. Preston, Ph.D.
Sagittaria sanfordii
click for enlargement
© 1991 Robert E. Preston, Ph.D.

More photos of Sagittaria sanfordii in CalPhotos


Geographic subdivisions for Sagittaria sanfordii:
n NCo (Del Norte Co.), KR, CaRF, GV, n SCo (Ventura Co.).
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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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.