Plate 1 figs. a–h
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.
Flowering n = 2,620 observations
Peak flowering in Apr, from 2,620 community-annotated observations worldwide. This is a global aggregate, not a forecast for your garden: the same species flowers on different dates in different hemispheres, and citizen-science records cluster near cities, at weekends, and in spring. Where a species has fewer than 30 annotated records we do not draw this chart at all.
Also published as 31 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.
- Callistemon citrinus (Curtis) Skeels
- Callistemon citrinus var. splendens Stapf
- Callistemon cunninghamii K.Koch
- Callistemon flavescens Regel
- Callistemon laevis Stapf
- Callistemon lanceolatus (Sm.) Sweet
- Callistemon lanceolatus Sweet
- Callistemon lanceolatus f. semperflorens (G.Lodd.) Voss
- Callistemon lanceolatus var. pendulus Regel
- Callistemon lanceolatus var. semperflorens (G.Lodd.) Heynh.
- Callistemon lanceolatus var. sparsus Regel
- Callistemon lilacinus Cheel
- Callistemon lilacinus f. albus Cheel
- Callistemon lilacinus f. carminus Cheel
- Callistemon longifolius (Dum.Cours.) Anon.
- Callistemon marginatus (Cav.) Sweet
- Callistemon pendulus Regel
- Callistemon pendulus var. confertus Regel
- Callistemon pendulus var. genuinus Regel
- Callistemon pendulus var. rigidus Regel
- Callistemon semperflorens G.Lodd.
- Metrosideros angustifolia Dum.Cours.
- Metrosideros citrina Curtis
- Metrosideros falcata Dum.Cours.
and 7 more.
Sourcesevery claim on this page
- World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
- iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
We publish what we can source and we say so when we cannot. This page has no care advice, no toxicity claim and no native range, because we do not yet have those from a source we can cite.