Anacadiaceae  

Trees or shrubs, also woody climbers or perennial herbs, resiniferous secretory ducts in bark and foliage, plants turpentine-smelling, blackening when wounded, hermaphroditic, polygamo-dioecious or dioecious. Leaves often clustered distally, alternate, exstipulate, simple, trifoliolate or imparipinnate. Inflorescences terminal or axillary thyrsoids or panicles; floral subtending bracts small, or sometimes large, membranous and fused to pedicel (Dobinea). Flowers small, actinomorphic, 3-5-merous, bisexual to unisexual; receptacle sometimes elongate and barrel-shaped (Mangifera). Perianth usually double (single in Pistacia or lacking in female flowers in Dobinea); sepals fused basally and lobed (bractlike in Pistacia), imbricate or valvate in bud, caducous or persistent. Petals free or adnate basally to extended receptacle, imbricate or valvate, deciduous to persistent. Stamens in 1 or 2 whorls, 1 (Anacardium, Mangifera), several, or all fertile; filaments slender, sometimes connate basally (Anacardium); anthers ovoid or oblong, introrse, dorsi- or basifixed, longitudinally dehiscent, 2-celled with 4 pollen sacs. Disk usually distinct, intrastaminal to extrastaminal, fleshy, crenulate, stipe-shaped or 5-10-notched, round, flattened or subcupular. Ovary superior, sometimes half inferior or inferior (Pegia and Semecarpus), either (a) 1-carpellate and 1-locular, (b) syncarpous and 2-5-locular (rarely more), (c) 4-6-carpellate and apocarpous (Buchanania), or (d) 5-carpellate and incompletely connate (Dracontomelon); stigmas 1-5 (rarely more), ± distinct, each locule with one apotropous ovule, usually with one carpel developing to maturity. Fruit drupaceous or dry and indehiscent (Dobinea), sometimes borne on enlarged fleshy hypocarp formed by pedicel and receptacle (Anacardium and Semecarpus) or fused to membranous accrescent floral subtending bract (Dobinea), composed of 1-5, rarely more, cells, each containing 1 seed; epicarp thin; mesocarp usually fleshy, fibrous and resinous; endocarp crustaceous to bony.