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Morphology of Cacti - Subfamily Cactoideae, Tribe – Trichocereeae Buxbaum 1958

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Habit

Treelike to shrubby (Anderson 2001).

Stems

Normally unsegmented, globose to columnar, usually ribbed, ribbedtuberculate, or tuberculate; reproductive areas differentiated as lateral or terminal cephalia or undifferentiated

Leaves

Borne laterally to subapically, small to quite large, nocturnal or diurnal, regular or bilaterally symmetrical; pericarpels with scales or hairs

Areoles

 

Flower

 

Fruits

Fleshy, berrylike, sometimes dehiscing longitudinally.

Seeds

Small to medium, variable in shape, hilum and micropyle conjunct or fused, appendages usually absent, strophiole present in some

Glochids

Absent

Spines

 

Roots

Fibrous or tuberous roots

Metabolism

CAM - Crassulacean acid metabolism (Anderson 2001).

Neoteny or paedomorphosis

Absent

Distribution

South of the equator in South America and the Galapagos Islands

  

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