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Tillandsia caput-medusae 'unknown cultivar' [Octopus Plant]

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#1 Hornblende

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Posted 07 July 2017 - 19:17

Viala, M. (2017) Tillandsia caput-medusae 'unknown cultivar' E.Morren (Bromeliaceae) Octopus Plant. Flowers photographed in visible, ultraviolet, infrared light and simulated bee vision. http://www.ultraviol...-octopus-plant/

Ottawa, Ontario, Canada
3 July 2017
Cultivar(?) from florist store

Other Common Names
  • Medusa's Head
Comment:
Tillandsia are epiphytic plants native from Central and South America. Their odd shape and easy cultivation makes them quite popular. The bloom are often very showy with bright red to pink bracts and elongated purple flowers with bright yellow anthers.
Like most Bromeliaceae Tillandsia die after flowering. Fortunately they systematically produce basal shoots.
The plant you can see here started as a tiny basal shoot from a mature, flowering parent I bought at a florist store 2-3 years ago.

Equipement [Canon 6D full spectrum + EL-Nikkor 80mm f/5.6]


Visible Light: [f/16 for 1/160" @ISO100 in sunlight with Lifepixel UVIR-block filter - white balance on white PTFE]
Attached Image: IMG_9211s copie 2.jpg

Ultraviolet Light: [f/22 for 6" @ISO800 - in sunlight with Baader UV-pass filter - white balance on white PTFE]
Attached Image: IMG_9215s copie.jpg

Close-up in ultraviolet Light: [same UV settings]
Attached Image: IMG_9216s copie.jpg

Infrared Light: [f/22 for 1/13" @ISO100 - in sunlight with Lifepixel IR-pass filter (830nm) - monochromatic image]
Attached Image: IMG_9212s copie.jpg

Simulated bee vision [UV to blue channel, blue to green channel and green to red channel]:
Attached Image: IMG_9211s copie 3.jpg

Reference:

1. Isley, P. T. (1987). Tillandsia. The world's most unusual air plants (pp. 206-39). Gardena, California.: Botanical Press. https://www.goodread...5219-tillandsia


[Published 7 July 2017]

#2 Andrea B.

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Posted 07 July 2017 - 20:13

What an interesting plant!!!
I have seen these before, but never in bloom.

Many red flowers are pollinated by hummingbirds or other birds. I wonder if the pollinator for this Tillandsia is known?
Andrea G. Blum
Often found hanging out with flowers & bees.

#3 Andrea B.

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Posted 07 July 2017 - 20:20

Well how did we ever live without interweb searches?

Martin, you might enjoy getting this paper.

Inferences about Pollination in Tillandsia
by C.S. Gardner
1986
https://www.jstor.or...an_tab_contents

Here is the intro.
Attached Image: Screen Shot 2017-07-07 at 4.19.32 PM.jpg
Andrea G. Blum
Often found hanging out with flowers & bees.