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Fig. 1 | EvoDevo

Fig. 1

From: Linking the evolution of development of stem vascular system in Nyctaginaceae and its correlation to habit and species diversification

Fig. 1

Diversity of stem ontogenies in Nyctaginaceae, illustrating developmental steps from eustele types to cambial variants. A Ontogeny 1 (interxylary phloem): polycyclic eustele, cambium from the CCP, phloem strands with different arrangements, illustrated by Colignonia glomerata (upper) forming bands and Pisonia aculeata (lower) forming phloem islands. B Ontogeny 2 (successive cambia): regular eustele, extra-fascicular cambium derived from the pericycle, additional successive bands or rings; Leucaster caniflorus. C Ontogeny 3 (successive cambia): regular eustele, regular cambium, new cambium formed de novo from the pericycle, additional successive bands or rings; Reichenbachia hirsuta. D Ontogeny 4 (successive cambia): polycyclic eustele, regular cambium derived from the CCP, new cambium formed de novo from the pericycle, additional small bands or rings of successive cambia; Allionia incarnata (upper) and Okenia hypogaea (lower). Drawing: Marcelo Kubo

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