Clerodendrum hastatum Lindl., Edwards’s Bot. Reg. 16: t. 1307 (1830) (syn: Siphonanthus hastatus (Lindl.) Roxb.);
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S. Bhutan to N. Bangladesh: Assam, Bangladesh, East Himalaya, India as per POWO;
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Help in identification: 1 high res. image.
Habit:- Shrub
Flowering time April – May
Place :- West Bengal
Clerodendrum hastatum Lindl.
We have something similar at
https://efloraofindia.com/efi/clerodendrum-minahassae/
I guess this is different. Leaves do not match.
Maybe you are right as per
https://www.flowersofindia.net/catalog/slides/Arrowleaf%20Glorybower.html
https://rcannon992.com/2015/10/13/a-weird-and-wonderful-plant/
https://www.biolib.cz/en/taxon/id933934/
https://www.gbif.org/occurrence/gallery?taxon_key=3892840
https://www.gbif.org/tools/zoom/simple.html?src=//api.gbif.org/v1/image/cache/occurrence/4072889421/media/e40f61fced9b2486771ca8ff6410a53f
https://www.researchgate.net/publication/362929081_Morphological_notes_on_leaves_of_Clerodendrum_hastatum_Lindl_Lamiaceae_for_on-field_identification_and_its_distribution_in_NE_India
Yes
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References:
POWO
https://www.flowersofindia.net/catalog/slides/Arrowleaf%20Glorybower.html
https://rcannon992.com/2015/10/13/a-weird-and-wonderful-plant/
https://www.biolib.cz/en/taxon/id933934/
https://www.gbif.org/occurrence/gallery?taxon_key=3892840
https://www.gbif.org/tools/zoom/simple.html?src=//api.gbif.org/v1/image/cache/occurrence/4072889421/media/e40f61fced9b2486771ca8ff6410a53f
https://www.researchgate.net/publication/362929081_Morphological_notes_on_leaves_of_Clerodendrum_hastatum_Lindl_Lamiaceae_for_on-field_identification_and_its_distribution_in_NE_India
https://indiaflora-ces.iisc.ac.in/herbsheet.php?id=14431&cat=13