Vincetoxicum, Wolf, 1776

Güven, Seher, Makbul, Serdar, Coskuncelebi, Kamil & Pinar, Nur Münevver, 2015, Pollinarium morphology of Vincetoxicum (Apocynaceae: Asclepiadoideae) in Turkey, Phytotaxa 230 (1), pp. 22-38 : 33

Key to Turkish Vincetoxicum based on pollinarium morphology

1. Pollinium ovate or elliptical ............................................................................................................................................................ 2.

- Pollinium clavate or obovate ........................................................................................................................................................... 5.

2. Pollinium elliptical, corpusculum oblong, pollen surface gemmate ........................................................................... V. parviflorum

- Pollinium ovate, corpusculum ovate, pollen surface rugulate ......................................................................................................... 3.

3. Corpusculum length 210–240 μm .................................................................................................................................... V. tmoleum

- Corpusculum length 250–310 μm ................................................................................................................................................... 4.

4. Pollinium length 270–295 μm ........................................................................................................... V. canescens subsp. canescens

- Pollinium length 250–260 μm ........................................................................................................ V. canescens subsp. pedunculata

5. Pollen surface rugulate .................................................................................................................................................................... 6.

- Pollen surface gemmate ................................................................................................................................................................... 7.

6. Pollinium length 250–270 μm and caudicle length 110–116 μm ....................................................................................... V. funebre

- Pollinium length 230–250 μm and caudicle length 90–105 μm ............................................... V. hirundinaria subsp. hirundinaria

7. Pollinium clavate ............................................................................................................................................................................. 8.

- Pollinium obovate ............................................................................................................................................................................ 9.

8. Pollinium length 220–240 μm and corpusculum length 190–206 μm .................................................. V. fuscatum subsp. boissieri

- Pollinium length 250–275 μm and corpusculum length 220–240 μm .................................................. V. fuscatum subsp. fuscatum

9. Pollinium length 210–240 μm and corpusculum length 175–200 μm ............................................................................ V. scandens

- Pollinium length 315–360 μm and corpusculum length 220–250 μm .......................................................................... V. speciosum