| MNHN species code | 3499 |
| abbrevation | Hyptetr (ES) |
| botanical genus | Hypericum |
| botanical family | Hypericaceae |
| phytosociologic indication | Calystegietalia sepium subsp. sepium |
| regne | Plantae |
| phylum | |
| classe | Equisetopsida |
| ordre | Malpighiales |
| famille | Hypericaceae |
| CD_TAXSUP | 193498 |
| rang | ES |
| habitat | 7 |
| statut | P |
| main french name | Millepertuis à quatre ailes, Millepertuis à quatre angles [Hypericum tetrapterum Fr., 1823] |
| main english name | Square-stalked St John's-Wort |
| main german name | Vierflügeliges Johanniskraut |
| main spanish name | |
| Code_BDNFF |
| name | language_id |
|---|---|
| Millepertuis à quatre angles | Français |
| Scharfkantiges Johanniskraut | Deutsch |
| Hypericum acutum Moench | Latin |
| Hypericum quadrangulum L., 1753 | Latin |
| Hypericum quadrangulum var. occidentale Franch., 1875 | Latin |
| Hypericum quadrangulum subsp. tetrapterum (Fr.) Hook.f., 1870 | Latin |
| Hypericum neapolitanum Ten., 1829 | Latin |
| Hypericum anagallidioides Jaub. & Spach, 1842 | Latin |
| Hypericum acutum Moench, 1794 | Latin |
| Hypericum acutum subsp. tetrapterum (Fr.) Maire, 1932 | Latin |
| Hypericum quadrangulare L. | Latin |
| Hypericum tetrapterum Fr. | Latin |
| forage category | Poor various species |
| forage value | 1 |
| unpaletable species | Non |
| value for horse | |
| Value for cattle | |
| vallue for sheep | |
| Value for goat | |
| forage quality stage 1 | |
| forage quality stage 2 | |
| forage quality stage 3 |
| red list | |
| regional protection |
| light | 7 |
| annual temperature index | 5 |
| continentality | 2 |
| resistance to flooding | Yes |
| adpatation to wet and dry conditions | Non |
| soil moisture | 8 |
| nitrogen soil fertility | 5 |
| pH | 7 |
| salinity | 0 |
| soil organic matter content | |
| phosphorus soil fertility | 5 |
| potassium soil fertility |
| resistance to fire | |
| resistance to trampling | |
| cutting resistance |
| life cycle | Perennial |
| raunkier classification | Hemicryptophyte |
| CSR strategy | |
| specific leaf area | |
| leaf dry matter content | |
| Functional Orphée INRA Toulouse |
| diaspore_weight | Hemicryptophyte |
| diaspore shape | Hemicryptophyte |
| seed bank longevity | Hemicryptophyte |
| diaspore type | Hemicryptophyte |
| fructification sum of temperature | |
| fructification beginning date | |
| fructification_ending |
| dispersion sum of temperature | |
| dispersion beginning date | Hemicryptophyte |
| dispersion ending date | Hemicryptophyte |
| dispersion mode | Anemochorous |
| dispersion organ | Anemochorous |
| dispersion : additional data | Anemochorous |
| diaspore number per dispersion | Anemochorous |
| germination season | Anemochorous |
| germination sum of temperature | |
| germination beginning date | |
| germination ending date | |
| optimal germination temperature | |
| minimal germination temperature | |
| maximal germination temperature |
| aerial axis base structure | Anemochorous |
| aerial axis | Erected stem |
| aerial part characteristics | Erected stem |
| aerial part height | |
| branching | Erected stem |
| lignification of aerial part | Non woody |
| leaf life span | Nov Déc Janv Fév |
| leaf nitrogen content | |
| leaf dry matter content | |
| leaf anatomy | |
| leaf shape | |
| leaf area | |
| leaf width | |
| leaf length | |
| leaf distribution |
| root type | Pivotant |
| root depth | 6 |
| root lateral_expansion | |
| root length | |
| root diameter | |
| root organ | Non |
| vegetative reproduction | Surtout par semis |
| type of reproduction | |
| flowering sum of temperature | |
| reproduction beginning date | Juin |
| flowering ending date | Septembre |
| flower dominant colour | Jaune |
| Pollinator insects | abeilles sauvages à langue courte - syrphes - mouches - coléoptères |
| pollination | |
| Main color | yellow |
| UV reflection | 40-66% extérieur et 0-7% intérieur |
| Pollen | beaucoup |
| Nectar |
| id | code | station_id | Actions |
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