caa a22 4500 475807227 CHVBK 20180406123750.0 cr unu---uuuuu 170329e20000301xx s 000 0 eng 10.1007/BF00985370 doi (NATIONALLICENCE)springer-10.1007/BF00985370 Jäger-Zürn Irmgard Hainerbergweg 61, D-61462, Königstein, Germany aut Developmental Morphology of Roots and root-borne shoots of Podostemum subulatum as compared with Zeylanidium olivaceum (Podostemaceae—Podostemoideae) Part VII of the series ‘Morphology of Podostemaceae' [Elektronische Daten] [Irmgard Jäger-Zürn] The root structure ofPodostemum subulatum is investigated and compared with that ofZeylanidium olivaceum. Podostemum has thread- or ribbon-like roots. The root tip consists of an inner apical meristem and a single-layered root cap. From roots arise numerous shoots of endogeneous origin. Their vascular bundle isab initio connected with the root bundle. By the simple (reduced) apical zonation, the roots ofPodostemum subulatum appear more advanced than the crustose roots ofZeylanidium olivaceum, which bear an ordinary (though asymmetrical) root cap. With regard to the endogeneous root-borne shoots, however,Zeylanidium appears more advanced because of the shoot dimorphism. The floriferous shoots have a short axis that grows plagiotropously above the crust surface, whereas the axes of the vegetative shoots are extremely short and remain, together with the apical meristem, within the crust. Only the leaves protrude from the crust surface. Springer-Verlag, 2000 Podostemum subulatum nationallicence Zeylanidium olivaceum nationallicence Podostemaceae nationallicence Podostemoideae nationallicence root nationallicence crustose root nationallicence root-borne shoot nationallicence modification of roots nationallicence root cap nationallicence Plant Systematics and Evolution Springer-Verlag 220/1-2(2000-03-01), 55-67 0378-2697 220:1-2<55 2000 220 606 https://doi.org/10.1007/BF00985370 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF00985370 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Jäger-Zürn Irmgard Hainerbergweg 61, D-61462, Königstein, Germany aut NATIONALLICENCE 773 0- Plant Systematics and Evolution Springer-Verlag 220/1-2(2000-03-01), 55-67 0378-2697 220:1-2<55 2000 220 606 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer