Perityle | |
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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] | |
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Perityle is a genus of flowering plants in the daisy family. [2] [3] [4] They are known generally as rock daisies. [5]
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]
13 species are currently accepted. [1] [7]