Diastema is a genus of about 21 species in the Gesneriaceae family native to southern Mexico, throughout Central America into northern South America (Venezuela, Colombia, Ecuador, Peru, and northern Bolivia). Plants are summer growing and winter dormant, pulling back to "scaly rhizomes" that are distinctive to some genera of the Gesneriaceae.

Type species. Diastema racemiferum. Benth. Species [ 1] 20; see text. Synonyms [ 1] Diastemation Müll.Berol. (1858) Diastemella Oerst. (1861) Diastema is a genus of flowering plant in the family Gesneriaceae containing approximately 20 species ranging from Mexico to Bolivia and Venezuela.

Diastema is comprised of around 20 small herbaceous plants distributed from southern Mexico southward into Bolivia. The genus has been characterized morphologically using 5 finger-like nectary lobes, purple-spots on the corolla lobes (aside from red-flowered species), and fruit dehiscence. Diastema appears to be an assemblage of more than one ...

苦苣苔科 [1] （學名： Gesneriaceae ）是一个大科，包括约150属3200余种，广泛分布在世界各地的热带和亚热带地区，部分种已经分布到温带地区。 在中国有56属，476余种，大部分生长在长江以南地区。 苦苣苔科的模式屬是苦苣苔屬（Conandron）。. 苦苣苔科植物绝大部分种类为多年生草本或亚灌木，也有 ...

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