{"id":6360,"date":"2025-12-29T18:20:58","date_gmt":"2025-12-30T00:20:58","guid":{"rendered":"https:\/\/opuntiads.com\/oblog\/?p=6360"},"modified":"2025-09-29T18:22:17","modified_gmt":"2025-09-29T23:22:17","slug":"cactoideae-and-opuntiodeae","status":"publish","type":"post","link":"https:\/\/opuntiads.com\/oblog\/cactoideae-and-opuntiodeae\/","title":{"rendered":"Cactoideae and Opuntiodeae"},"content":{"rendered":"
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Introduction<\/h2>\n

Cactoideae<\/em> and Opuntioideae<\/em> are the two principal subfamilies of Cactaceae (alongside the smaller Pereskioideae<\/em>). All cacti share defining traits\u2014areoles, CAM photosynthesis, betalain pigments, and inferior ovaries\u2014but these subfamilies diverge markedly in stem architecture, presence of glochids, leaf persistence, and seed anatomy. Below, each group is outlined with diagnostic characters and examples to highlight their differences.<\/p>\n

The Deails<\/h3>\n

Cactoideae<\/h4>\n

Members of Cactoideae<\/em> encompass most \u201cclassic\u201d cacti\u2014columnar, globose, ribbed, or tuberculate\u2014with unjointed stems and no glochids. Leaves are typically absent or minute, except in a few basal lineages within the subfamily. Floral diversity is high, ranging from night-blooming, bat- or moth-pollinated species to day-blooming, bee-visited forms.<\/p>\n