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Selaginella boomii (Selaginellaceae – Lycopodiophyta): A new and widely distributed spikemoss from South America
- Valdespino, Iván A.
- Brittonia 2015 v.67 no.4 pp. 328-335
- Selaginella, conservation status, forests, granite, leaves, new species, savannas, spores, Brazil, Guyana, Suriname, Venezuela
- Selaginella boomii is described as a new species and compared to the similar S. roraimensis. The new species is widely distributed in Venezuela, Guyana, Suriname, and Brazil where it grows on granite outcrops and boulders in forests and savannas. Selaginella boomii is illustrated with Scanning Electron Micrographs of stem sections, leaves, and spores, and its conservation status is discussed based on IUCN Categories and Criteria. This new species is classified within subgenus Stachygynandrum because of its heteromorphic vegetative leaves and monomorphic sporophylls that are arranged in quadrangular strobili. Finally, a brief overview on the current number of Selaginella species known from South America is provided to highlight that our knowledge of the diversity of this genus in the region is far from complete.