Hypericum tetrapterum
| Hypericum tetrapterum | |
|---|---|
 | |
| Scientific classification | |
| Kingdom: | Plantae |
| (unranked): | Angiosperms |
| (unranked): | Eudicots |
| (unranked): | Rosids |
| Order: | Malpighiales |
| Family: | Hypericaceae |
| Genus: | Hypericum |
| Species: | H. tetrapterum |
| Binomial name | |
| Hypericum tetrapterum Fries | |
| Synonyms | |
|
Hypericum quadrangulum | |
Hypericum tetrapterum (syn. H. quadrangulum) is a herbaceous perennial plant species in the flowering plant family Hypericaceae. Its common names include St. Peter's wort, Peterwort, square stemmed St. John's wort, and square stalked St. John's wort.
Description
Hypericum tetrapterum is a rhizomatous, glabrous perennial plant growing to about 60cm in height. The stems are square in cross section, with conspicuous wings at the corners. The leaves are in opposite pairs, simple and entire, and have many translucent glandular dots. The yellow flowers are 9-13mm diameter and there may be black glands on the five petals and sepals, as well as on the leaves.[1]:340
Distribution
Hypericum tetrapterum is common in damp habitats throughout Europe. [2]
References
- ↑ Stace, C.A. (2010). New flora of the British isles (Third ed.). Cambridge, U.K.: Cambridge University Press. ISBN 9780521707725.
- ↑ "Hypericum tetrapterum L.". Retrieved 19 August 2015.
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