Machaeranthera bigelovii (A. Gray) Greene
Tansyleaf spine aster, Bigelow’s tansyaster
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Dieteria bigelovii (A. Gray) D.R. Morgan & R.L. Hartm.
8/26/2014 · Rte 117, El Malpais National Monument Badlands, El Malpais, New Mexico · ≈ 9 × 7″ (21 × 18 cm) 
8/26/2014 · Rte 117, El Malpais National Monument Badlands, El Malpais, New Mexico · ≈ 7 × 7″ (17 × 18 cm) 
8/26/2014 · Rte 117, El Malpais National Monument Badlands, El Malpais, New Mexico · ≈ 11 × 7″ (28 × 18 cm) 
8/26/2014 · Rte 117, El Malpais National Monument Badlands, El Malpais, New Mexico · ≈ 10 × 7″ (25 × 16 cm) 
8/26/2014 · Rte 117, El Malpais National Monument Badlands, El Malpais, New Mexico · ≈ 14 × 10″ (35 × 25 cm) 
| Kingdom | Plantae | Plants, but not fungi, lichens, or algae (from Stearn's Botanical Latin) |
| Subkingdom | Tracheobionta | Vascular plants—plants with a “circulatory system” for delivering water and nutrients |
| Division | Magnoliophyta | Flowering plants, also known as angiosperms |
| Class | Magnoliopsida | Dicotyledons—plants with two initial seed leaves |
| Subclass | Asteridae | A large class that encompasses asters |
| Order | Asterales | Flowering plants with a central disk flower and surrounding petals, like daisies |
| Family | Asteraceae | The aster family, which also includes daisies and sunflowers; from the Greek ἀστήρ, “star,” for the star-shaped flowers |
| Genus | Machaeranthera | Greek for sword-like anthers |
| Species | bigelovii | After botanist and physician Jacob Bigelow (1787-1879), author of the first textbook on botany |
Machaeranthera bigelovii description by Thomas H. Kent, not updated.
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