Spiraea blumei var. obtusa is
a deciduous shrub, 1-1.5m in height, in sunny rocky areas in hilly
districts, branching well. Leaves are alternate, approximately 3cm
in length, and cut shallowly in three, with margins with uneven
teeth or incisions. Flowers are white, 6-8mm in diameter; pedicels
measure 10-15mm; calyx lobes are triangular, 1mm in length, and bend
not after flowers. Bloom time: April-May.