Hapaxanth

Hapaxanthe ( from the ancient Greek hapax ἅπαξ " once " and ancient Greek ἄνθος anthos " flower ", " flower " ) or semelpare plants are plants that bloom only once in their lives, bear fruit and then die off completely, in contrast to persistent or pollakanthen plants, the flower within their life cycle several times.

Hapaxanthe plants themselves differ again as follows:

• One-year or annual agricultural species lay the entire development of seed germination to seed maturity within one growing season back.
• Two-year or bienne species lay the entire development of seed germination to seed maturity within two summers and one or two winters back. The seed germinates in the first fall and then survived as a rosette or seedling winter. The development is not completed until the following summer. Example: Root
• Perennial or plurienne species are hapaxanthe plants that are older than two years and sometimes need many years to get to Blühreife, where they expend through the flower and fruit formation so that they then completely die. Examples: Some agave species as well as many bamboo species ( subfamily Bambusoideae ) are perennial hapaxanth - depending on the type remain latter may many years or decades in a vegetative state before all the stocks of the same species bloom suddenly in the same year. The talipot palm ( Corypha umbraculifera ) requires even about 30 years to reach flowering. The Bromeliad plants eventually Puya raimondii is the most striking example of such a perennial plant hapaxanthen: Puya raimondii takes about 50 to 70 years to form the largest inflorescence of all known plant species. Another Bromeliad, Tillandsia ferreyrae, also makes no Kindel. Most others, however, bromeliad species are not hapaxanthen plants.