Rain tree is Albizia saman, more fondly known as its obsolete name Samanae saman, a tree originated from
the Neotropics, range from Mexico to Peru and Brazil. However, it is widely introduced to South and
SE Asia, as well as the Pacific Islands.
The generic name Albizia is to honor an Italian nobleman
Filippo degli Albizzi, who introduced Albizia
julibrissin to the Europe in the mid-18th century. The specific name saman is from the Spanish word originated from South American
aboriginal name zamang.
The name ‘rain tree’ was coined in
India, due to the possible excreta of cicada inhabiting the trees. It Hawaii, its known as ‘monkeypod’. Its common name varies in different regions
and different languages.
Albizia saman F.Muell. was known as by numerous synonyms :
·Acacia propinqua A.Rich.
·Albizzia saman (Jacq.) Merr. (orth.var)
·Calliandra saman (Jacq.) Griseb.
·Enterolobium saman (Jacq.) Prain
·Feuilleea saman (Jacq.) Kuntze
·Inga cinerea
Willd.
·Inga salutaris Kunth
·Inga saman
(Jacq.) Willd.
·Mimosa pubifera Poir.
·Mimosa saman
Jacq.
·Pithecellobium cinereum Benth.
·Pithecellobium saman (Jacq.) Benth.
·Pithecellobium saman var. saman
(Jacq.) Benth.
·Pithecolobium saman (Jacq.) Benth.
·Samanea saman (Jacq.) Merr.
·Zygia saman
(Jacq.) A.Lyons
Albizia saman is a wide canopied tree with a large symmetrical crown of up to 20m
in diameter. It can reach a height of
25m and trunk diameter of 40cm. The bark is gray, rough, thick, furrowed. Its leaves are alternate, bipinnate with
diamond-shaped leaflets. Flowers are in
clusters, pink to yellow, depending on its lineage. Seed pods are long, 10-20cm long. Seeds oblong, reddish brown.
The large crown provides a nice
canopy, thus often planted in parks. It can
also planted in row along road shoulders.
Yet, the large branches tend to break off. The vast root system also often found
damaging roads, drains, pedestrian walkway and buildings.