Clerodendrum speciosissimumDrapiez

Javanese glorybower

WFO wfo-0000886588 Accepted WFO 2026-06 8 photographs CC BY

Plate 1 figs. a–h · 2 observations

This species has been photographed under an open licence only 2 times, 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.

Clerodendrum speciosissimum, photographed by Arthur Windsor
fig. a Arthur Windsor, CC BY 4.0 / 2020-06-13 / obs. 79093252

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
01026579
Filed as
Clerodendrum speciosissimum C.Morren
Det. by
H. N. Moldenke 1968-12-01
Collected
A. A. Heller 1902-11-19
Origin
PR
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 8 botanical countries

Regions where Clerodendrum speciosissimum is native: Bismarck Archipelago, Borneo, Jawa, Malaya, New Guinea, Solomon Is., Sumatera, Vanuatu Bismarck ArchipelagoBorneoJawaMalayaNew GuineaSolomon Is.Sumatera Vanuatu
Native distribution of Clerodendrum speciosissimum, 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
Bismarck Archipelago BIS ASIA-TROPICAL
Borneo BOR
Jawa JAW
Malaya MLY
New Guinea NWG
Solomon Is. SOL
Sumatera SUM
Vanuatu VAN PACIFIC

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 65 in flower of 68 examined

Proportion of examined Clerodendrum speciosissimum in flower, by month
Month In flower Examined Share 95% interval
Jan 7 7 100% 65% to 100%
Feb 5 6 83% 44% to 97%
Mar 1 2 too few examined
Apr 2 2 too few examined
May 8 8 100% 68% to 100%
Jun 8 8 100% 68% to 100%
Jul 8 8 100% 68% to 100%
Aug 5 5 100% 57% to 100%
Sep 2 2 too few examined
Oct 6 6 100% 61% to 100%
Nov 7 7 100% 65% to 100%
Dec 6 7 86% 49% to 97%

Peak flowering in Jan. Each bar is the share of Clerodendrum speciosissimum 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. 65 of 68 examined observations were in flower, every one of them research grade. The whisker on each bar is a 95% Wilson interval. 3 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.

Where it actually grows measured, from 200 observations

Condition 5th percentile Median 95th percentile
Coldest month, mean daily low 11.3 °C 16.6 °C 24.1 °C
Warmest month, mean daily high 25.6 °C 30.7 °C 31.6 °C
Annual rainfall 1,175 mm 1,539 mm 2,680 mm
Rainfall in the driest quarter 119 mm 151 mm 329 mm

It is not found anywhere that gets close to freezing. This is not care advice and it is not a forecast. It is a measurement: we sampled the climate at every one of the 200 research-grade observations of Clerodendrum speciosissimum 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 10 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.

  • Clerodendrum blumeanum Schauer
  • Clerodendrum buchananii var. fallax (Lindl.) Bakh.
  • Clerodendrum colebrookeanum var. forbesii King & Gamble
  • Clerodendrum fallax Lindl.
  • Clerodendrum greyi Baker
  • Clerodendrum horsfieldii Miq.
  • Clerodendrum papuanum Scheff.
  • Clerodendrum pulchrum Fawc.
  • Clerodendrum speciosissimum f. album Moldenke
  • Clerodendrum speciosum Teijsm. & Binn. ex Wigman

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.