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Utricularia Dunlopii


Jens R.

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Hi,

my Utricularia dunlopii plants have started to flower. Unfortunately I have trouble pollinating the flowers. They are extremely small, ca. 2 mm without the "antennae" and unlike other Utricularia flowers the corolla lobes cannot be forced apart. I tried it with a small brush but can't see if i have been successful. Any other ideas ?

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Regards

Jens

Edited by Jens R.
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Search for toothpick and pollination here, there are some good advices.

I would have tried a toothpick, but the entrance is too small. A toothpick would tear the flower apart.

I wish I had the persistence to try more of these annuals,but most of them disappear in my collection after being in flower.

I know what you mean. I just sowed my few U. multifida seeds from last year's flowers. If they don't germinate I will loose this species too.

Regards

Jens

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Hi All,

These ephemerals are a nightmare! I've just lost the U. georgei I posted pictures of last summer.

I grew and flowered this species about 13 years ago, and was confident I had achieved pollination using a toothpick, but alas not!

Just got some more seed though so will try again.

I wrote an article at the time, and in the same journal Allen Lowrie wrote an artice on pseudo-copulation pollination of this group of species. Perhaps you need more mosquitos!?

Have you noticed the incredible perfume produced by the flowers in the evenings? This is the time when the mosquitos would appear in habitat I guess, and the flowers glow when the setting sun hits them at a certan angle. There are some plants even among our group of botnical mis-fits that really push the limits!

Somewhere I have some pictures I took at the time and will post them if I can find them. I did have one image on the front cover of the CPS journal the following year.

Nigel H-C

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Wow, what a fantastic species!! I would love to see a series of pics showing those antennae uncurling from within the closed flower bud!

Anyways, by what I've seen. it seems that ripping it open wouldn't help since it's already open. For Lentibulariaceae, I used to use a piece of string pulled from my shirt or pants. I'd roll it up between my fingers and then poke around every day inside the flower.

Good luck!

Fernando Rivadavia

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Not sure of their availability to the general public but an inoculating wire (used in microbiology for making "stab" cultures) would probably suit your needs. Basically it is a thin platinum or NiChro wire mounted in a handle.

You can also use a thin piece of fishing line. Same concept as Fernando except the fishing line is a bit more rigid so less likely to "crumple" when you are working with it.

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