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Aponogeton distachyos

Higher Taxonomy
Family: AponogetonaceaeView Description 

Habit: Perennial herb from corm, tuber, or short, thick rhizome, aquatic, glabrous; sap milky. Leaf: alternate, simple, [generally submersed] or floating, petioled, basal in opposite pairs; blade expanded or not, elliptic to lanceolate if floating. Inflorescence: terminal, scape above water, generally spike or panicle with 2--3(10) spike-like branches, subtended by conspicuous, deciduous bract. Flower: bisexual [unisexual], bilateral; perianth parts [0]1[6], generally petal-like, white or yellow; stamens 6--18 in 2 series or 6--50 in 3--4 series; pistils 2--6(9), fused +- 1/2--2/3, separating in fruit, ovary superior, chamber 1, ovules 1--12, style short, stigmatic surface grooved. Fruit: follicle, leathery. Seed: 4; embryo straight.
Genera In Family: 1 genus, +- 54 species: tropical Asia, Australia, southern Africa.
eFlora Treatment Author: Robert F. Thorne, C. Barre Hellquist & Robert R. Haynes
Scientific Editor: Thomas J. Rosatti.
Genus: AponogetonView Description 

Etymology: (Greek: from aquatic habitat)

Aponogeton distachyos L. f.
Leaf: petiole to 100 cm; blade 6--23 cm, +- narrow-lanceolate to -elliptic. Inflorescence: panicle of generally 2 spike-like branches, emergent; bract +- 3 cm; flowers in 2 rows, +- on 1-side of axis. Flower: perianth part 1, white, enlarging, turning green in fruit, base wide; stamens many. Fruit: to 22 mm, curved or straight; beak terminal, +- 5 mm.
Ecology: Ponds; Elevation: < 150 m. Bioregional Distribution: c-w SnFrB, s SCo, expected elsewhere; Distribution Outside California: native to southern Africa. Flowering Time: Feb--Apr Note: Widely cultivated for aquaria, often escaping but generally a waif.
Synonyms: Aponogeton distachyon, orth. var.
eFlora Treatment Author: Robert F. Thorne, C. Barre Hellquist & Robert R. Haynes
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botanical illustration including Aponogeton distachyos


Citation for this treatment: Robert F. Thorne, C. Barre Hellquist & Robert R. Haynes 2016. Aponogeton distachyos, in Jepson Flora Project (eds.) Jepson eFlora,, accessed on April 29, 2016.

Citation for the whole project: Jepson Flora Project (eds.) 2016. Jepson eFlora,, accessed on April 29, 2016.

Geographic subdivisions for Aponogeton distachyos:
c-w SnFrB, s SCo, expected elsewhere;
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.
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.