Rubiaceae
Au
Kadua acuminata
- Family
- Rubiaceae
- Genus
- Kadua
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![Au: Au [syn. Hedyotis acuminata] Rubiaceae Endemic to the Hawaiian islands Oʻahu (Cultivated) nativeplants.hawaii.edu/plant/view/Kadua_acuminata](https://thumb.wikimedia.org/wikipedia/commons/thumb/7/71/Kadua_acuminata_%284743801717%29.jpg/1280px-Kadua_acuminata_%284743801717%29.jpg)
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Common names
By language (2)
- English
- Au
- Hawaiian
- Au, Pilo
Synonyms
- Hedyotis acuminata (Cham. & Schltdl.) Steud.
- Hedyotis acuminata f. alanii Fosberg
- Hedyotis acuminata f. alicarpa Fosberg
- Hedyotis acuminata f. alicarpoides Fosberg
- Hedyotis acuminata f. brevimucronata Fosberg
- Hedyotis acuminata f. brownii Fosberg
- Hedyotis acuminata f. compacta Fosberg
- Hedyotis acuminata f. cylindrica Fosberg
- Hedyotis acuminata f. duripes Fosberg
- Hedyotis acuminata f. eamesii Fosberg
- Hedyotis acuminata f. elliptica Fosberg
- Hedyotis acuminata f. forbesii Fosberg
- Hedyotis acuminata f. grandis (A.Gray) Fosberg
- Hedyotis acuminata f. grayana Fosberg
- Hedyotis acuminata f. greenwellae Fosberg
- Hedyotis acuminata f. halawana Fosberg
- Hedyotis acuminata f. haupuensis Fosberg
- Hedyotis acuminata f. heteripes Fosberg
- Hedyotis acuminata f. hirtella Fosberg
- Hedyotis acuminata f. hirticalyx Fosberg
- Hedyotis acuminata f. honopui Fosberg
- Hedyotis acuminata f. iaoensis Fosberg
- Hedyotis acuminata f. kaalae (Wawra) Fosberg
- Hedyotis acuminata f. koolauensis Fosberg
- Hedyotis acuminata f. lanaiensis Fosberg
- Hedyotis acuminata f. liberipes Fosberg
- Hedyotis acuminata f. microliberipes Fosberg
- Hedyotis acuminata f. obovata Fosberg
- Hedyotis acuminata f. ovalicalyx Fosberg
- Hedyotis acuminata f. ovalifolia (A.Gray) Fosberg
- Hedyotis acuminata f. pilicalyx Fosberg
- Hedyotis acuminata f. pololuensis Fosberg
- Hedyotis acuminata f. quadricosta Fosberg
- Hedyotis acuminata f. scherffiana Fosberg
- Hedyotis acuminata f. skottsbergiana Fosberg
- Hedyotis acuminata f. sphaerocarpa Fosberg
- Hedyotis acuminata f. st-johnii Fosberg
- Hedyotis acuminata f. storeyi Fosberg
- Hedyotis acuminata f. subsessilis Fosberg
- Hedyotis acuminata f. toppingii Fosberg
and 10 more.
Plant problems
Pothos leaves turning yellow in fall: causes and fixesLearn why pothos leaves turn yellow in fall, how light shifts and watering cause it, and simple steps to keep your plant healthy all winter.
Peony leaves turning black in fall: causes and carePeony leaves turning black in fall are usually dying back for winter alongside common end-of-season fungal blotch. Here is how to clean them up.
Fiddle leaf fig dropping leaves in fall: causes and fixesWhy your fiddle leaf fig drops leaves in fall, how to dial in autumn light and watering, and how to tell normal shedding apart from root rot.
Pothos long stems with few leaves: causes and fixesLong, sparse pothos vines often need more light. Check for watering-related leaf loss, improve light, and prune selectively for fuller growth.
Photos
Photo: David Eickhoff from Pearl City, Hawaii, USA, CC BY 2.0, from Wikimedia Commons 
Photo: Forest & Kim Starr, CC BY 3.0, from Wikimedia Commons 
Photo: Forest & Kim Starr, CC BY 3.0, from Wikimedia Commons ![Au: Au [syn. Hedyotis acuminata] Rubiaceae Endemic to the Hawaiian Islands Oʻahu (Cultivated) nativeplants.hawaii.edu/plant/view/Kadua_acuminata](https://upload.wikimedia.org/wikipedia/commons/thumb/f/f6/Kadua_acuminata_%284766623630%29.jpg/500px-Kadua_acuminata_%284766623630%29.jpg)
Photo: David Eickhoff from Pearl City, Hawaii, USA, CC BY 2.0, from Wikimedia Commons ![Au: Au [syn. Hedyotis acuminata] Rubiaceae Endemic to the Hawaiian islands Oʻahu (Cultivated) nativeplants.hawaii.edu/plant/view/Kadua_acuminata](https://thumb.wikimedia.org/wikipedia/commons/thumb/7/71/Kadua_acuminata_%284744439870%29.jpg/1280px-Kadua_acuminata_%284744439870%29.jpg)
Photo: David Eickhoff from Pearl City, Hawaii, USA, CC BY 2.0, from Wikimedia Commons 
Photo: Forest and Kim Starr, CC BY 2.0, from Wikimedia Commons
![Au: Au [syn. Hedyotis acuminata] Rubiaceae Endemic to the Hawaiian Islands Oʻahu (Cultivated) nativeplants.hawaii.edu/plant/view/Kadua_acuminata](https://upload.wikimedia.org/wikipedia/commons/f/f6/Kadua_acuminata_%284766623630%29.jpg)
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Sources: classification, synonyms from World Flora Online Plant List (2026-06, CC0 1.0); common names, popularity from Wikidata (2026-10-26, CC0 1.0). About our plant data.