Arnaldoa is a genus of flowering plants in the aster family, Asteraceae. It is native to Ecuador and Peru.[1][2]
| 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) | |
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.[1]
- Species[3]
- 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 edit
-
Detail of woody stem of A. macbrideana, showing paired spines -
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 edit
- ^ a b 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
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