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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Plant systematics and evolution 176 (1991), S. 205-219 
    ISSN: 1615-6110
    Keywords: Pteridophyta ; Selaginellales ; Selaginella moratii ; spec. nova ; Systematics ; growth form ; habitat ; Flora of Madagascar
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Selaginella moratii W. Hagemann & W. Rauh, spec. nova, is described. The Madagascarian plant from Fianarantsoa has a strongly differentiated subterranean rhizome system with a dichocladial mother rhizome bearing anisotomous branch systems with tufted tubers. These rhizophore tubers are observed for the first time inSelaginella. The green photophilous aerial shoots are produced by unbranched subterranean runners. The plant is adapted to carpets ofColeochloa setifera lying on granite rocks. Within these carpets,Selaginella moratii is associated withDrosera, Genlisea, Xerophyta, Myriothamnus, Kalanchoë, Senecio, andAloë among others. The description of the unique plants ofSelaginella moratii Rauh & Hagemann is based on alcohol-fixed material collected in 1963 by the senior author. The largest plants from this material measured approximately 10 cm. It is unknown whether larger plants exist in nature. It must be stated that the collected material is incomplete in many respects. Thus, it does not permit a complete reconstruction of the growth form of the natural plants, and further, it turned out that some anatomical details could not be sufficiently cleared up. Due to the fact that, in the natural sites, plant collectors can see only the aerial shoot systems, which show no striking differences to other dorsiventral selaginellas, it happened that the species was overlooked. Also, since the collected material has not been described until now, the plant has not been rediscovered since the year of its first observation. Thus, a comprehensive comparative study of the living plants remains a desideratum.
    Type of Medium: Electronic Resource
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