Notes:
This species has rather robust leaves, multiflowered cymes, and rather well developed calyx limbs. It is the most commonly collected species of Sommera, perhaps because it is common in secondary vegetation with a size accessible to botanists, but certainly also because southern Central America is well collected. Plants of Sommera donnell-smithii from Costa Rica and Panama were identified in the 1960's and 1970's as Sommera grandis but only one species of Sommera is recognized from this area now (Lorence, 2012). Sommera donnell-smithii is similar to Sommera guatemalensis, which at least to some extent replaces it to the north.
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