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346.0000 Family Podostemaceae Rich. ex Kunth; Nov. Gen. Sp. [H.B.K.] 1: ed. qu. 246 (1816), nom. cons.
ca. 50 genera, ca. 370 spp. Latest phylogeny: Ruhfeld et al. (2024) who could include only about half of the genera due to DNA extraction problems from herbarium specimens. There are obviously too many species described because the plastic variability of many species (depending on the site conditions) has been underestimated. Many species are known from only 1-2 locations and are extremely threatened by climate changes, river changes, drought, deforestation and other man-made influences.
Species listed in database: 367
= Marathraceae Dumort.; Anal. Fam. Pl. 60, 62 (1829)
= Philocrenaceae Bong.; Mém. Acad. Imp. Sci. St.-Pétersbourg, Sér. 6, Sci. Math. 3(2): 87 (1834)
= Tristichaceae Willis; J. Linn. Soc., Bot. 43: 51 (1915)
346.3033 Genus Letestuella G.Taylor; Bull. Brit. Mus. (Nat. Hist.), Bot. 1: 57 (1953)
Distribution: Tropical W-Africa
Species listed in database: 1
species :
Letestuella tisserantii G.Taylor; Bull. Brit. Mus. (Nat. Hist.), Bot. 1: 57 (1953)
Distribution: S-Mali; Ivory Coast; Togo; ?Benin; Niger; Cameroon; Central African Republic; ?D.R.Congo [Zaire]; Angola; Namibia
22 IVO MLI NGR TOG 23 CAF CMN 26 ANG 27 NAM
Synonyms: hidden
= Letestuella chevalieri G.Taylor; Bull. Brit. Mus. (Nat. Hist.), Bot. 1: 59 (1953)
= Leiothylax warmingii (Engl.) Warm.; Kongel. Danske Vidensk. Selsk. Skr., Naturvidensk. Math. Afd., Ser. 6, 9: 150 (1899)
= Leiocarpodicraea warmingii (Engl.) Engl.; Bot. Jahrb. Syst. 38: 98 (1905)
= Dicraeia warmingii Engl.; Bot. Jahrb. Syst. 17: 135 (1894)
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A complete, synonymic checklist of the Higher Plants of the World

Version 26.03 (March 30th, 2026)

Covering 359,184 accepted species,
8,882 hybrids, 47,737 accepted infraspecific taxa and 1,007,635 synonyms,
in total 1,423,438* names

[*about 25,000 dubious, "unplaced" names and about 4,000 invalid names (Art. 24.3) like "typicus" are deliberately omitted]

With complete, detailed distribution data (countries and regions) and literature references

Arranged in linear phylogenetic sequence reflecting true relationships

Fully searchable and continously updated

With 38,209 pictures of 15,787 species

Assembled through 40 years independently from other databases

In cooperation with Catalogue of Life