Seymeria bipinnatisectaSeem.

Eagle Pass blacksenna

WFO wfo-0000495494 Accepted WFO 2026-06 6 photographs CC BY

Plate 1 figs. a–f · 1 observation

This species has been photographed under an open licence only 1 time, so some figures below are different views of the same plant, taken on the same day, rather than different individuals. They are usually different parts of it: the leaf, the flower, the bark.

Seymeria bipinnatisecta, photographed by Arturo Castro Castro
fig. a Arturo Castro Castro, CC BY 4.0 / 2019-09-26 / obs. 181077066
Seymeria bipinnatisecta, photographed by Arturo Castro Castro
fig. b Arturo Castro Castro, CC BY 4.0 / obs. 181077041
Seymeria bipinnatisecta, photographed by Arturo Castro Castro
fig. c Arturo Castro Castro, CC BY 4.0 / obs. 181077000
Seymeria bipinnatisecta, photographed by Arturo Castro Castro
fig. d Arturo Castro Castro, CC BY 4.0 / obs. 181077019
Seymeria bipinnatisecta, photographed by Arturo Castro Castro
fig. e Arturo Castro Castro, CC BY 4.0 / obs. 181077028
Seymeria bipinnatisecta, photographed by Arturo Castro Castro
fig. f Arturo Castro Castro, CC BY 4.0 / obs. 181077078

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 5 botanical countries

Regions where Seymeria bipinnatisecta is native: Arizona, Mexico Northeast, Mexico Northwest, Mexico Southwest, Texas ArizonaMexico NortheastMexico NorthwestMexico SouthwestTexas
Native distribution of Seymeria bipinnatisecta, 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.
RegionTDWG codeContinent
Arizona ARI NORTHERN AMERICA
Mexico Northeast MXE
Mexico Northwest MXN
Mexico Southwest MXS
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 46 in flower of 51 examined

Peak flowering in Sep. Each bar is the share of Seymeria bipinnatisecta 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. 46 of 51 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 9 months have fewer than 5 examined observations, so no proportion is drawn for them. 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.

Also published as 13 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.

  • Afzelia bipinnatisecta (Seem.) Kuntze
  • Afzelia chihuahuana Pennell
  • Afzelia glandulosa Pennell
  • Afzelia havardii Pennell
  • Afzelia tenuisecta Pennell
  • Afzelia texana (A.Gray) Small
  • Seymeria bipinnatisecta var. texana A.Gray
  • Seymeria chihuahuana (Pennell) Standl.
  • Seymeria glandulosa (Pennell) Standl.
  • Seymeria havardii (Pennell) Standl.
  • Seymeria havardii (Pennell) Pennell
  • Seymeria tenuisecta (Pennell) Standl.
  • Seymeria texana (A.Gray) Pennell

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.