| Hypericum hyssopifolium | |
|---|---|
 | |
Scientific classification | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Rosids |
| Order: | Malpighiales |
| Family: | Hypericaceae |
| Genus: | Hypericum |
| Subsection: | Hypericumsubsect. Stenadenum |
| Species: | H. hyssopifolium |
| Binomial name | |
| Hypericum hyssopifolium Chaix (1786)[1] | |
| Synonyms[1] | |
| |
Hypericum hyssopifolium, thehyssop-leaved St. John's wort,[2] is aspecies offlowering plant of the St. John's wortfamily (Hypericaceae) which is native to theMediterranean andBlack Sea regions. It grows on chalky orlimestone soil in open woods or scrub at elevations of 500–1,800 m (1,600–5,900 ft) inSpain,France,Italy,Bulgaria,Crimea, and theCaucasus.[1]
Hypericum hyssopifolium is a smallperennial herb that grows 0.3–0.6 meters tall. Its stems sometimes have scattered amber glands up to the inflorescence. The leaves on the main stem are larger than those on auxiliary stems, and have a flat base and round point, with small pale glands. Eachinflorescence can have many flowers from up to ten difference nodes. The flowers are around 1 centimeter in diameter, with globe-shaped buds. The petals are yellow or golden and are the shape of a lengthened oval. They have a narrow stalk-like base and a rounded point. Each flower has around thirty stamens, the longest of which are 0.9 cm. The seeds are dark reddish-brown and 1.8 mm long.[3]
Plants of the species which are in the Balkan population vary from this description in several minor ways, most notably that their leaves are shaped differently, with acute points instead of rounded ones.[3]
Two subspecies are recognized:[1]
TheInventaire National du Patrimoine Naturel [fr] (INPN), run by theFrench National Museum of Natural History, assessedHypericum hyssopifolium asLeast Concern inmetropolitan France as a whole, butVulnerable in the region ofMidi-Pyrénées.[4]