Dioclea (plant)
{{Short description|Genus of legumes}}
{{Automatic taxobox
|image =
|image_caption =
|taxon = Dioclea
|subdivision_ranks = Species
|subdivision = See text.
|synonyms = *Crepidotropis Walp.
- Hymenospron Spreng.
- Lepidamphora Zoll. ex Miq.
}}
Dioclea is a genus of flowering plants in the pea family, Fabaceae, that is native to the Americas. The seeds of these legumes are buoyant drift seeds, and are dispersed by rivers.
Taxonomy
A molecular phylogenetic study published in 2020 showed that when broadly circumscribed, Dioclea was not monophyletic. Many species were transferred to the genus Macropsychanthus.{{Citation |last1=de Queiroz |first1=Luciano Paganucci |last2=Snak |first2=Cristiane |date=2020 |title=Revisiting the taxonomy of Dioclea and related genera (Leguminosae, Papilionoideae), with new generic circumscriptions |journal=PhytoKeys |issue=164 |pages=67–114 |doi=10.3897/phytokeys.164.55441 |pmid=34531697 |pmc=8359005 |name-list-style=amp |doi-access=free}}
= Species=
{{As of|2021|August}}, Plants of the World Online accepted the following species:{{citation |title=Dioclea Kunth |work=Plants of the World Online |publisher=Royal Botanic Gardens, Kew |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:30004459-2 |access-date=28 August 2021}}
- Dioclea albiflora R.S.Cowan
- Dioclea apurensis Kunth
- Dioclea burkartii R.H.Maxwell
- Dioclea fimbriata Huber
- Dioclea guianensis Benth.
- Dioclea holtiana Pittier ex R.H.Maxwell
- Dioclea lasiophylla Mart. ex Benth.
- Dioclea lehmannii Diels
- Dioclea macrantha Huber
- Dioclea ovalis R.H.Maxwell
- Dioclea paniculata Killip ex R.H.Maxwell
- Dioclea sericea Kunth
- Dioclea vallensis R.H.Maxwell
- Dioclea virgata (Rich.) Amshoff
Species transferred to Macropsychanthus include:
- Dioclea grandiflora → Macropsychanthus grandiflorus
- Dioclea macrocarpa → Macropsychanthus macrocarpus
- Dioclea megacarpa → Macropsychanthus megacarpus
- Dioclea schimpffii → Macropsychanthus schimpffii
Chemistry
The A-type proanthocyanidin, epigallocatechin-(2β→7,4β→8)-epicatechin, together with epicatechin, luteolin 3′β-d-glucopyranoside, chrysoeriol 7β-d-glucopyranoside and 2-methylpentan-2,4-diol, can be found in the leaves of Dioclea lasiophylla.{{cite journal |pmid=11190400 |date=December 2000 |first1=André L. B. S. |last1=Barreiros |first2=Juceni P. |last2=David |first3=Luciano P. |last3=de Queiroz |first4=Jorge M. |last4=David |title=A-type proanthocyanidin antioxidant from Dioclea lasiophylla |volume=55 |issue=7 |pages=805–8 |journal=Phytochemistry |doi=10.1016/S0031-9422(00)00297-1|bibcode=2000PChem..55..805B }}