Mikania cordifolia(L.f.) Willd.

Florida Keys hempvine

WFO wfo-0000035778 Accepted WFO 2026-06 8 photographs CC BY

Plate 1 figs. a–h · 8 separate observations

Mikania cordifolia, photographed by Joseph Aubert
fig. a Joseph Aubert, CC BY 4.0 / 2022-05-29 / obs. 201801414
Mikania cordifolia, photographed by Bahiano Ayala
fig. b Bahiano Ayala, CC BY 4.0 / obs. 196167537
Mikania cordifolia, photographed by Andrea Gantzer
fig. c Andrea Gantzer, CC BY 4.0 / obs. 196908570
Mikania cordifolia, photographed by Eduardo Luis Beltrocco
fig. d Eduardo Luis Beltrocco, CC BY 4.0 / obs. 187609422
Mikania cordifolia, photographed by Eduardo Luis Beltrocco
fig. e Eduardo Luis Beltrocco, CC BY 4.0 / obs. 187108361
Mikania cordifolia, photographed by Eduardo Luis Beltrocco
fig. f Eduardo Luis Beltrocco, CC BY 4.0 / obs. 186625652
Mikania cordifolia, photographed by María Zeta
fig. g María Zeta, CC BY 4.0 / obs. 176816255
Mikania cordifolia, photographed by Tom Field
fig. h Tom Field, CC BY 4.0 / obs. 169054452

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.

Native range 44 botanical countries

Regions where Mikania cordifolia is native: Alabama, Florida, Georgia, Louisiana, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Mississippi, Texas, Argentina Northeast, Argentina Northwest, Belize, Bolivia, Brazil North, Brazil Northeast, Brazil South, Brazil Southeast, Brazil West-Central, Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, El Salvador, French Guiana, Guatemala, Guyana, Haiti, Honduras, Jamaica, Leeward Is., Nicaragua, Panamá, Paraguay, Peru, Puerto Rico, Suriname, Trinidad-Tobago, Uruguay, Venezuela, Windward Is. AlabamaFloridaGeorgiaLouisianaMexico CentralMexico GulfMexico NortheastMexico NorthwestMexico SoutheastMexico SouthwestMississippiTexasArgentina NortheastArgentina NorthwestBelizeBoliviaBrazil NorthBrazil NortheastBrazil SouthBrazil SoutheastBrazil West-CentralColombiaCosta RicaCubaDominican RepublicEcuadorEl SalvadorFrench GuianaGuatemalaGuyanaHaitiHondurasJamaicaNicaraguaPanamáParaguayPeruPuerto RicoSurinameTrinidad-TobagoUruguayVenezuela Leeward Is.Windward Is.
Native distribution of Mikania cordifolia, 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
Argentina Northwest AGW
Belize BLZ
Bolivia BOL
Brazil North BZN
Brazil Northeast BZE
Brazil South BZS
Brazil Southeast BZL
Brazil West-Central BZC
Colombia CLM
Costa Rica COS
Cuba CUB
Dominican Republic DOM
Ecuador ECU
El Salvador ELS
French Guiana FRG
Guatemala GUA
Guyana GUY
Haiti HAI
Honduras HON
Jamaica JAM
Leeward Is. LEE
Nicaragua NIC
Panamá PAN
Paraguay PAR
Peru PER
Puerto Rico PUE
Suriname SUR
Trinidad-Tobago TRT
Uruguay URU
Venezuela VEN
Windward Is. WIN
Alabama ALA NORTHERN AMERICA
Florida FLA
Georgia GEO
Louisiana LOU
Mexico Central MXC
Mexico Gulf MXG
Mexico Northeast MXE
Mexico Northwest MXN
Mexico Southeast MXT
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.

Flowering 56 in flower of 119 examined

Peak flowering in Nov. Each bar is the share of Mikania cordifolia observations in which someone actually recorded the reproductive state and found the plant in flower, not the raw number of flowering records. That distinction matters: people observe plants far more in spring than in winter, so a bare count of flowering records partly measures when people go outside. Dividing by the number examined removes that. 56 of 119 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. This is still a global aggregate and not a forecast for your garden: the same species flowers on different dates in different hemispheres. Where a species has fewer than 30 flowering records we do not draw this chart at all. Computed from 10.15468/dl.cgje2x.

Where it actually grows measured, from 888 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low 6.1 °C 8.5 °C 17.1 °C
Warmest month, mean daily high 26.7 °C 30.8 °C 33.8 °C
Annual rainfall 973 mm 1,333 mm 1,908 mm
Rainfall in the driest quarter 38 mm 177 mm 381 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 888 research-grade observations of Mikania cordifolia 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. Climate from CHELSA V2.1 (Karger et al. 2017); occurrences from 10.15468/dl.cgje2x.

Also published as 49 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.

  • Cacalia angulata Vahl
  • Cacalia cordata Vell.
  • Cacalia cordata Vell.Conc.
  • Cacalia cordifolia L.f.
  • Cacalia pilosa Vell.
  • Cacalia pilosa Vell.Conc.
  • Cacalia triangularis Vell.Conc.
  • Cacalia triangularis Vell.
  • Eupatorium cowleyanum M.Gómez & Molinet
  • Eupatorium crenatum Gomes
  • Eupatorium crenatum Gomes
  • Eupatorium ludovicianum DC.
  • Eupatorium marquezianum M.Gómez
  • Eupatorium opiferum Baill.
  • Eupatorium opiferum (Martins) Baillon
  • Mikania amara Bertero ex DC.
  • Mikania biformis Sch.Bip. ex Baker
  • Mikania carnosula DC.
  • Mikania carnulosa DC.
  • Mikania cissampelina DC.
  • Mikania cocaensis Gardner
  • Mikania convolvulacea DC.
  • Mikania convolvulacea var. convolvulacea
  • Mikania convolvulacea var. portoriccensis DC.

and 25 more.

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. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. 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.