Albugo tragopogonis
| Pustula helianthicola | |
|---|---|
 | |
| A sunflower leaf with white rust infection caused by Pustula helianthicola in the field. | |
| Scientific classification | |
| Kingdom: | Chromalveolata |
| Phylum: | Heterokontophyta |
| Class: | Oomycetes |
| Order: | Albuginales |
| Family: | Albuginaceae |
| Genus: | Pustula |
| Species: | Pustula obtusata |
| Binomial name | |
| Pustula obtusata (Link) C. Rost, (2012) | |
Pustula obtusata, Goatsbeard White Rust, is an oomycete plant pathogen unrelated to fungal organisms.
Albugo tragopogonis is the old but illegitimate name for Pustula obtusata, the causal agent of white blister disease on goatsbeard (Tragopogon spp.). This name has often been misapplied to the subflower white blister pathogen.