| Perityle | |
|---|---|
 | |
| Perityle emoryi | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Subfamily: | Asteroideae |
| Tribe: | Perityleae |
| Subtribe: | Peritylinae |
| Genus: | Perityle Benth. (1844) |
| Synonyms [1] | |
| |
Perityle is a genus of flowering plants in the daisy family. [2] [3] [4] They are known generally as rock daisies. [5]
Contents
Perityle is a variable genus, with its members sharing few characteristics. They include small herbs to spreading shrubs and most bear yellow or white daisylike flower heads. The fruit is generally a flat seed with thickened margins which may or may not have a pappus or scales. Plants of this genus are native to North and South America. [5]
A study including morphological and cytological analyses and a phylogenomic analysis of chloroplast and nuclear genomes was published in 2022, and concluded that Perityle as previously circumscribed was polyphyletic. The authors revived and/or expanded the genera Galinsogeopsis , Laphamia , and Nesothamnus to establish monophyletic clades. The small genus Amauria and the Desventuradas Islands endemic species Lycapsus tenuifolius were merged into Perityle, leaving it with 13 species. [6]
