Jepson eFlora: Taxon page
Vascular Plants of California
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Salvinia oblongifolia

Higher Taxonomy
Family: SalviniaceaeView Description 
Habit: Free-floating aquatic; roots 0. Stem: horizontal. Leaf: in groups of 3 along stem, each group of 2 floating leaves, 1 submersed; floating leaves simple, +- sessile or short-petioled, generally ovate to cordate, entire, notched at tip or not, green, hairy, hairs water-repellent on upper face; submersed leaf dissected, root-like, generally petioled, +- white, hairy. Sporangia: in +- spheric, indehiscent cases of 2 kinds, submersed, on axes in chain-like arrangements or on leaves. Sporangium Case: few to many; sporangia many per case; spores 32 or 64 per sporangium, spheric, in hard mass. Male Sporangium Case: few to many; sporangia many per case; spores 32 or 64 per sporangium, spheric, in hard mass. Female Sporangium Case: 1--few, basal; sporangia few per case; spore 1 per sporangium, spheric.
Genera In Family: 1 genus, +- 10 species: +- worldwide, generally tropics. Note: Closest relatives of Azollaceae. In California, probably all are escapes from cultivation, aquaria, reproducing vegetatively (fertile material documented in California only for Salvinia minima).
eFlora Treatment Author: Bruce G. Baldwin
Scientific Editor: Thomas J. Rosatti.
Genus: SalviniaView DescriptionDichotomous Key

Etymology: (A.M. Salvini, Italian botanist, 1633--1729)
Reference: Riefner & Smith 2009 J Bot Res Inst Texas 3:855--866
Salvinia oblongifolia Mart.
Leaf: floating blade 25--45 mm, oblong, length generally 2--3 × width, papillae on upper face < 0.1 mm, hairs on papillae with free tips.
Ecology: Sluggish water, among emergent roots, urban riparian woodland; Elevation: < 15 m. Bioregional Distribution: SCo (Bixby Slough, Los Angeles Co.); Distribution Outside California: native to Brazil.
Jepson eFlora Author: Bruce G. Baldwin
Reference: Riefner & Smith 2009 J Bot Res Inst Texas 3:855--866
Index of California Plant Names (ICPN; linked via the Jepson Online Interchange)

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Citation for this treatment: Bruce G. Baldwin 2012, Salvinia oblongifolia, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on June 22, 2024.

Citation for the whole project: Jepson Flora Project (eds.) 2024, Jepson eFlora,, accessed on June 22, 2024.

No expert verified images found for Salvinia oblongifolia.

Geographic subdivisions for Salvinia oblongifolia:
SCo (Bixby Slough, Los Angeles Co.)
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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).


Data provided by the participants of the  Consortium of California Herbaria.
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All markers link to CCH specimen records. The original determination is shown in the popup window.
Blue markers indicate specimens that map to one of the expected Jepson geographic subdivisions (see left map). Purple markers indicate specimens collected from a garden, greenhouse, or other non-wild location.
Yellow markers indicate records that may provide evidence for eFlora range revision or may have georeferencing or identification issues.

CCH collections by month

Duplicates counted once; synonyms included.
Species do not include records of infraspecific taxa, if there are more than 1 infraspecific taxon in CA.
Blue line denotes eFlora flowering time (fruiting time in some monocot genera).