- Plants
- ›Vascular Plants
- ›flowering plants
- ›Dicots
- ›Gentians, Dogbanes, Madders, and Allies
- ›madder family
- ›Rubioideae
- ›Spermacoceae
Kadua
Kadua is a genus of flowering plants in the family Rubiaceae. It comprises 29 species, all restricted to Polynesia. Twenty-two of these are endemic to the Hawaiian Islands. Some of the species are common at high elevation. Others are single-island endemics or very rare, and a few are probably extinct. Kadua affinis is widely distributed in Hawaii and is polymorphic. The type species for the genus is Kadua acuminata.
Kadua was formerly included in a broadly defined and polyphyletic Hedyotis, which encompassed, in addition to Kadua, species now placed in Oldenlandia, Oldenlandiopsis, Houstonia, and other genera. Hedyotis is now circumscribed more narrowly.
27 branches of this genus, most-observed first
manono
speciesKadua affinis
Manono
speciesKadua centranthoides
manono
speciesKadua munroi
Kadua acuminata
speciesKadua acuminata
Kadua cordata
speciesKadua cordata
Kadua foggiana
speciesKadua foggiana
Kadua elatior
speciesKadua elatior
Kadua parvula
speciesKadua parvula
Kadua axillaris
speciesKadua axillaris
Kadua tryblium
speciesKadua tryblium
Kadua fluviatilis
speciesKadua fluviatilis
Kadua knudsenii
speciesKadua knudsenii
Kadua littoralis
speciesKadua littoralis
Kadua lichtlei
speciesKadua lichtlei
Kadua st-johnii
speciesKadua st-johnii
Kadua romanzoffiensis
speciesKadua romanzoffiensis
'awiwi
speciesKadua cookiana
Kadua flynnii
speciesKadua flynnii
Kadua formosa
speciesKadua formosa
Kadua rapensis
speciesKadua rapensis
Kadua haupuensis
speciesKadua haupuensis
Kadua laxiflora
speciesKadua laxiflora
Kadua nukuhivensis
speciesKadua nukuhivensis
Kadua degeneri
speciesKadua degeneri
Kio`ele
speciesKadua coriacea
Kadua foliosa
speciesKadua foliosa
Kadua grantii
speciesKadua grantii
Where it lives
Recorded sightings
—
geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the stacks
Searching the stacks…
Every page naming Kadua in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 448479.