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Eichhornia crassipes [Common Water Hyacinth]

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#1 Mark

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Posted 27 May 2019 - 20:00

Duda, M. (2019) Eichhornia crassipes (Mart.) Solms (Pontederiaceae) Common Water Hyacinth. Flower photographs of reflected ultraviolet, visible, ultraviolet induced visible fluorescence, infrared, ultraviolet induced infrared fluorescence, and cyan induced infrared fluorescence. (https://www.ultravio...water-hyacinth/)

Massachusetts, USA
2019.May.26
Greenhouse cultivated

Pollinators: Long-tongued bees.

Comment: This specimen was transported from a greenhouse to the studio for photography. The flowers were completely wilted within several hours after capturing the following photos.

References:
1. Native Plant Trust (2019) Eichhornia crassipes (Mart.) Solms-Laubach:
https://gobotany.nat...rnia/crassipes/
2. Wikipedia (2019.May.22, 14:57 UTC) Eichhornia crassipes:
https://en.wikipedia...ornia_crassipes

Edited by Mark, 23 February 2020 - 13:24.


#2 nfoto

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Posted 27 May 2019 - 21:37

These images are so strikingly pretty one tends to forgive E. crassipes of being such a troublesome aquatic plant ! Excellent documentation of its hidden features.

#3 dabateman

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Posted 28 May 2019 - 12:03

Thats the best UV induced visible fluorescence I have seen. Outstanding work and images Mark. The uv induced IR also looks better than the cyan.
Very interesting.

#4 Andy Perrin

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Posted 28 May 2019 - 15:45

The backlighting looks nifty!

#5 Mark

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Posted 28 May 2019 - 22:12

@Andy: I didn't actually employ any backlighting in this set. Or perhaps you're referring to the translucence of the petals where some of the fluorescence is shining through from within? (which I happen to like very much)

@dabateman: Qualitatively I'm not sure if I have an aesthetic preference for either the UVIIF or CyIIF (each has it's pro's/con's IMO) - but what I do find very interesting is how the longer cyan wavelength lights up that spot in the middle of the central petal, while the same spot does nothing (re: fluorescence) under UV!

#6 Andy Perrin

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Posted 28 May 2019 - 23:56

Mark: the latter.

#7 Andrea B.

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Posted 25 June 2019 - 15:52

Stunning set.
Thanks, Mark!
Andrea G. Blum
Often found hanging out with flowers & bees.