Apium repens
(Jacq.) Lag.
Familia
APIACEAE
Apio rastrero
Apium repens (commonly known as creeping celery, wild celery or
river celery) is a small, perennial, amphibious herbaceous plant
belonging to the Apiaceae family. Also classified by the scientific
community under the name Helosciadium repens, it is notable for being a
highly specialised, rare species that is strictly protected under
various European legal frameworks due to the disruption of its habitats.
Its stems are prostrate (lying flat on the ground) and have the unique
ability to root at each node, forming a low-growing carpet. Both the
leaves and the flowering stems emerge vertically from these nodes.
The leaves are once-divided (pinnatisect), typically comprising between
5 and 11 rounded or suborbicular leaflets with slightly toothed or lobed
margins.
The flowers are small and white, grouped in umbrella-shaped
inflorescences called compound umbels. These grow on peduncles that are
usually considerably longer than the rays of the inflorescence itself.
It is extremely easy to confuse it with the common berraza (Helosciadium
nodiflorum). However, creeping celery differs in that it is much
smaller, its umbels have long peduncles and its stems always remain
prostrate, as well as having well-defined reflexed bracts.
Tenerife