Botanical name: Macaranga denticulata Family: Euphorbiaceae (Castor family)
Synonyms: Macaranga pustulata, Mappa wallichii, Tanarius denticulatus
Blistery Macaranga is an evergreen tree up to 18 m tall, characterized by trunk with shield shaped leaf scars. Exudate watery becoming gum-like, pinkish-red. Bole straight, often tapering, bark pale grey, smooth, with U-shaped ridges and shield -shaped leaf scars. Twigs angled and ridged, glabrous or covered with minute hairs. Exudate watery, becoming gum-like, pinkish-red. Leaves simple, alternate and spiral, below densely red-brown hairy, becoming glabrous or with minute hairs and yellow dots, glaucous, broadly ovate to almost round, apex acuminate, base peltate, margin entire or shallowly toothed with glands at the end of the teeth. Primary vein 3-5, radiating, secondary veins obtuse, tertiary veins oblique. Stipules present, narrow, falling off early. Flowers are arranged in a many-flowered inflorescence, axillary, or just below the leaves, unisexual, on different trees, flower-stalks up to 3 mm long. Fruit is up to 0.8 cm long, capsule splitting into 2 sections, with sticky yellow powder from glandular scales outside. Blistery Macaranga is found in the Himalayas, from Nepal to Sikkim, Burma, Andaman, Thailand, S. China, and Malaysia, at altitudes of 200-1400 m. Flowering: April-June.
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The flower labeled Blistery Macaranga is ...