Cassia javanica microcalyx

Cassia javanica Linnaeus subsp. microcalyx (Irwin & Barneby) K. Larsen

Description (see also Cassia javanica )
Deviates in having linear-acute stipules like in subsp. pubiflora , (see below) combined with a tiny calyx of sepals 4-5.5 mm long, petals 15-20 mm long; ovary hairy.

Malesia: Sumatra and Borneo.

Mixed evergreen forests at lower altitude.

Irwin & Barneby (1982: 51) suggest that their var. microcalyx appears to replace other forms of Cassia javanica in Sumatra and Borneo; this has to be investigated more closely.