Confirmation ID - Convolvulus tricolor

Requests about identification of wild plants in Malta and Gozo. (Please include precise details and pictures to help the experts in their ID process)

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Confirmation ID - Convolvulus tricolor

Post by MWP admin »

Does the flower below belong to Convolvulus tricolor. I dont remember sizes (to follow haslam keys) but less from 2cm.

Plant with long soft white hairs. Leaf very short petioled or sessile, auriculate base. Fruit small globose capsules. Sepals with an acute tip. (acuminate probably)

Should be the Three coloured bindweed in my non-expert opinion.
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Post by robcar »

No, it is Convolvulus pentapetaloides - corolla with 5 distinct pointed lobes (unlike C.tricolor) and flower much smaller than C. tricolor - i have never actually seen C. tricolor myself.
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U R Right

Post by MWP admin »

Yes, in fact I feel ashamed that I inputted this post as it was easy to distinguish between the two convolvulus spp., just from the flower size alone where the tri-color is more or less 3 times larger from the 7-10mm diameter of C. pentaloides. The three colours of the flower fooled me for the tri-color in the first place.


Curiosity - the front garden of the house in front of us might have the C. tricolor (or a similar cultivar) planted. It s a large spreading climber with large trumpet shaped flowers composed of 3 distinct colours. It practically has as much flowers as leaves coverage all year round!

If you want a photo just tell me.
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Post by IL-PINE »

Yes Convolvulus pentapetaloides. I have met with it at Wied Encita.
The plant in the garden opposite might be Ipomoea which is commonly cultivated in our islands.
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Post by MWP admin »

Yes it must be that one... so we have to forget C. tricolor :(
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Post by MWP admin »

I have revised a bit my images and this should be Convolvulus siculus.

The yellow centre as a distinguishing feature for C. pentapetaloides vs C. siculus is a bit misleading, becasue C. siculus also have a slight yellow centre, but not as well marked as C. pentapetaloides. The latter usually have the white part in a form of a star while for siculus is somehow circular. If you have Bonnett's photobook, it is clear.

Lets forget flower colour...

From Haslam keys, the first distinguishing feature between the two is the leaves.

Well petioled and broad = C. siculus

Subsessile or base tapering to a petiole, and the shape of lamina is linear or narrow obovate = C. pentapetaloides
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Post by IL-PINE »

I guess it is siculus yes.
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