Ctenodon viscidulus(Michx.) D.B.O.S.Cardoso & A.Delgado

sticky jointvetch

WFO wfo-1000002880 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Ctenodon viscidulus, photographed by Ben Machado
fig. a Ben Machado, CC BY 4.0 / 2022-05-01 / obs. 193086514
Ctenodon viscidulus, photographed by Eric Knight
fig. b Eric Knight, CC BY 4.0 / obs. 135714695
Ctenodon viscidulus, photographed by Jay Horn
fig. c Jay Horn, CC BY 4.0 / obs. 88633919
Ctenodon viscidulus, photographed by Eric Knight
fig. d Eric Knight, CC BY 4.0 / obs. 86334113
Ctenodon viscidulus, photographed by natalie
fig. e natalie, CC0 1.0 / obs. 153029880
Ctenodon viscidulus, photographed by Brandon Corder
fig. f Brandon Corder, CC BY 4.0 / obs. 204189011
Ctenodon viscidulus, photographed by Athena Philips
fig. g Athena Philips, CC BY 4.0 / obs. 143405109
Ctenodon viscidulus, photographed by Athena Philips
fig. h Athena Philips, CC BY 4.0 / obs. 135202558

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

The specimen a real sheet, in a real collection

Herbarium
The New York Botanical Garden
Accession
02687478
Filed as
Aeschynomene viscidula Michx.
Det. by
W. M.B. São-Mateus 2011-09-22
Collected
W. M.B. São-Mateus 2011-09-11
Origin
BR
The sheet
View the digitised specimen (CC BY 4.0)

A real pressed plant, in a real collection, under the accession number above. Not an illustration of one. The holding institution does not serve this sheet’s image to third parties, so there is no photograph here. The record is real and the link goes to it. Where we hold no openly licensed sheet for a species this section is simply absent, and where a sheet never recorded who determined it, that field stays empty rather than being filled in. Roughly half of all herbarium sheets never recorded a determiner, which is ordinary.

Native range 23 botanical countries

Regions where Ctenodon viscidulus is native: Alabama, Florida, Georgia, Mexico Northeast, Mexico Southwest, Mississippi, Texas, Argentina Northeast, Belize, Bolivia, Brazil North, Brazil Northeast, Brazil Southeast, Brazil West-Central, Cuba, El Salvador, Guatemala, Leeward Is., Netherlands Antilles, Nicaragua, Paraguay, Venezuela, Windward Is. AlabamaFloridaGeorgiaMexico NortheastMexico SouthwestMississippiTexasArgentina NortheastBelizeBoliviaBrazil NorthBrazil NortheastBrazil SoutheastBrazil West-CentralCubaEl SalvadorGuatemalaNicaraguaParaguayVenezuela Leeward Is.Netherlands AntillesWindward Is.
Native distribution of Ctenodon viscidulus, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows. Regions too small to draw at this scale are marked with a dot.
RegionTDWG codeContinent
Argentina Northeast AGE SOUTHERN AMERICA
Belize BLZ
Bolivia BOL
Brazil North BZN
Brazil Northeast BZE
Brazil Southeast BZL
Brazil West-Central BZC
Cuba CUB
El Salvador ELS
Guatemala GUA
Leeward Is. LEE
Netherlands Antilles NLA
Nicaragua NIC
Paraguay PAR
Venezuela VEN
Windward Is. WIN
Alabama ALA NORTHERN AMERICA
Florida FLA
Georgia GEO
Mexico Northeast MXE
Mexico Southwest MXS
Mississippi MSI
Texas TEX

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Where it actually grows measured, from 153 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low 7.3 °C 9.9 °C 17.1 °C
Warmest month, mean daily high 29.7 °C 31.8 °C 35.0 °C
Annual rainfall 806 mm 1,345 mm 1,584 mm
Rainfall in the driest quarter 144 mm 181 mm 323 mm

It is barely found anywhere that freezes. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 153 research-grade observations of Ctenodon viscidulus that carry a coordinate, and this is the range those places actually span. The 5th and 95th percentiles are used rather than the minimum and maximum, because a single cultivated specimen in a heated conservatory should not widen a tropical plant's range to the Arctic.

This is not a hardiness zone. A USDA zone is the average annual extreme minimum temperature. The figure above is the mean daily minimum of the coldest month, which is a different quantity and is typically far warmer. Reading one as the other would place a plant several zones too warm, so we do not publish a hardiness zone, because we do not have one.

Also published as 6 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Aeschynomene eriocarpa Standl. & Steyerm.
  • Aeschynomene gilbertoi Brandão
  • Aeschynomene littoralis Vogel
  • Aeschynomene prostrata F.Dietr.
  • Aeschynomene viscidula Michx.
  • Secula viscidula (Michx.) Small

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. USDA PLANTS Database. common name, checklist symbol AEVI. public domain. Retrieved 2026-07-13.
  4. Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.