Abatia spicata

Abatia spicata is a shrub or small tree in the family Salicaceae, order Malpighiales, with the specific epithet spicata derived from the Latin spica meaning spike, indicating that this species bears its flowers in spike-like inflorescences rather than the branched racemes or panicles characteristic of some congeners. Spike inflorescences, in which flowers are sessile or nearly sessile along an elongated unbranched axis, are a common floral arrangement in many plant families and represent an efficient way of displaying multiple flowers in sequence for insect pollination or for wind pollination at high altitudes. The genus Abatia comprises approximately ten species distributed across the Andean highlands of South America and, in the case of Abatia mexicana, extending into the montane highlands of Mexico. Abatia spicata occupies montane forest, cloud forest, and shrubland habitats in the Andes, where it grows as a shrub or small tree contributing to the vegetation structure of forest margins and shrubby mountain slopes. The leaves are alternate and simple, with toothed or serrate margins and stipules characteristic of the family Salicaceae. The distinctive spike-like inflorescences bear small flowers with sepals, petals, and stamens, and the fruit is a dry capsule that splits at maturity to release seeds. The vertical spike inflorescence may facilitate efficient pollinator access in the wind-swept conditions of high Andean montane habitats. The expanded Salicaceae, within which Abatia is placed through modern molecular systematics, is a large family of order Malpighiales containing over 1000 species worldwide, ranging from Arctic willows to tropical trees.