New York Natural Heritage Program
Shrubby St. John's-wort
Hypericum prolificum L.
Dicots
Hypericum prolificum Paul Rutledge
Family: st. john's-wort family (Clusiaceae)

State Protection: Threatened
listed species are those with: 1) 6 to fewer than 20 extant sites, or 2) 1,000 to fewer than 3,000 individuals, or 3) restricted to not less than 4 or more than 7 U.S.G.S. 7 minute topographical maps, or 4) listed as threatened by U.S. Department of Interior.

Federal Protection: Not Listed

State Rarity Rank: S2
A State Rarity Rank of S2 means: This plant is threatened/imperiled in New York because of rarity (typically 6-20 populations or few remaining individuals) or is vulnerable to extirpation from New York due to biological factors.

Global Rarity Rank: G5
A Global Rarity Rank of G5 means: This species is demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.


Did you know?
Shrubby St. John's-wort has a wide range of population sizes. In southeastern New York there are populations of just a few to dozens of plants, while in an agricultural setting in Cattaraugus county there is one population estimated to contain a million plants. It is certainly living up to its species name there.

State Ranking Justification [-]
There are five existing occurrences, two of which have more than 1000 plants. The best population has over hundreds of thousands of plants. The three remaining populations have less than 50 plants each and may not be viable long-term. There are six historical occurrences which still need to be surveyed.

Short-term Trends [-]

Long-term Trends [-]