Anales del Jardín Botánico de Madrid, Vol 69, No 1 (2012)

Botanical novelties from Sierra de Maigualida, southern Venezuela. II


https://doi.org/10.3989/ajbm.2299

José R. Grande
Facultad de Ciencias, Universidad Central de Venezuela, Venezuela, Bolivarian Republic of

Jacquelyn Kallunki
New York Botanical Garden, United States

María M. Arbo
CTES, Instituto de Botánica del Nordeste, Argentina

Paul E. Berry
University of Michigan Herbarium and Department of Ecology and Evolutionary Biology, United States

Otto Huber
Fundación Instituto Botánico de Venezuela “Dr. Tobías Lasser”, Herbario Nacional de Venezuela, Universidad Central de Venezuela, Venezuela, Bolivarian Republic of

Ricarda Riina
Real Jardín Botánico, CSIC, Spain

Abstract


Four new species, Siphocampylus acanthidiotrichus J.R. Grande (Campanulaceae), Phyllanthus huberi Riina & P.E. Berry (Phyllanthaceae), Sohnreyia maigualidensis J.R. Grande & Kallunki (Rutaceae), and Turnera maigualidensis J.R. Grande & Arbo (Turneraceae) are described and illustrated from the summit areas of Sierra de Maigualida in the Gua - yana Highlands of southern Venezuela. To date, one genus, 32 spe cies, one subspecies, and one variety of angiosperms are known only from the Maigualida meadows and shrublands, between 1800 m and the highest elevation areas at 2400 m. Here we describe the first iteroparous species for the genus Sohnreyia K. Krause, a Turnera L. species with apically villose, apiculate petals, and a Siphocampylus Pohl species with aculeiform hairs and pinnatisect leaves. The new species, Siphocampylus acanthidiotrichus, together with S. Tillettii Steyerm., represents a morphologically distinct subgroup within the genus.

Keywords


Campanulaceae; Guayana Highlands; Guiana Shield; Pantepui, Phyllanthaceae; Rutaceae; taxonomy; Turneraceae

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