| Arnaldoa | |
|---|---|
| |
| Arnaldoa macbrideana | |
Scientific classification 
| |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Subfamily: | Barnadesioideae |
| Tribe: | Barnadesieae |
| Genus: | Arnaldoa Cabrera |
| Type species | |
| Arnaldoa magnifica (syn of A. weberbaueri) Cabrera | |
Arnaldoa is a genus of flowering plants in the aster family, Asteraceae. It is native to Ecuador and Peru.
These plants are shrubs with spines located at the attachment point of each leaf to the stem. The flower heads contain disc florets in shades of orange, orange-red, purple, or cream and the pappus-tufted fruits are adapted for wind dispersal. The plants grow on dry, wooded or shrubby slopes at elevations between 1370 and 3000 metres.
- Species
- Arnaldoa argentea C.Ulloa, P.Jørg. & M.O.Dillon – up to 3.5 meters tall with light orange or cream-colored florets (Ecuador)
- Arnaldoa coccinosantha (Muschl.) Ferreyra - Peru
- Arnaldoa macbrideana Ferreyra – purple florets (Peru)
- Arnaldoa weberbaueri (Muschl.) Ferreyra – bright orange-red or occasionally purple florets up to 5 centimeters long (Peru)
Gallery
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Detail of woody stem of A. macbrideana, showing paired spines
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Flowering shoot of
A. macbrideana in bud, Dresden Botanical Garden -
Flowering growth of A. macbrideana, showing bud and infructescences, that on left still enclosing pappus-tufted fruits
References
- ^ Ulloa, C. U., et al. (2002). Arnaldoa argentea (Barnadesioideae: Asteraceae), a new species and a new generic record for Ecuador. Novon 12 415-419.
- Tropicos, Arnaldoa Cabrera
- Flann, C (ed) 2009+ Global Compositae Checklist
| Taxon identifiers | |
|---|---|
| Arnaldoa | |
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