Studies in Neotropical Araliaceae. Three new species of Sciodaphyllum P. Browne (Araliaceae) with globose capitate inflorescences from Ecuador and Peru

In the genus Sciodaphyllum (Araliaceae), some species have paniculate inflorescences with globose capitula as their terminal units, in which numerous tightly packed flowers develop into fruits that are appressed to each other. This informal assemblage, referred to as the “globose-capitate group,” cu...

Full description

Saved in:
Bibliographic Details
Published in:Brittonia 2021, Vol.73 (3), p.262-273
Main Authors: Rodrigues-Vaz, Carlos, Plunkett, Gregory M., Lowry II, Porter P.
Format: Article
Language:English
Subjects:
Araliaceae
Biodiversity
Biomedical and Life Sciences
Botanics
Flowers
Geographical distribution
Life Sciences
Morphology
New species
Original Research
Plant Anatomy/Development
Plant Ecology
Plant Physiology
Plant Sciences
Plant Systematics/Taxonomy/Biogeography
Species extinction
Systematics, Phylogenetics and taxonomy
Threatened species
Vegetal Biology
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In the genus Sciodaphyllum (Araliaceae), some species have paniculate inflorescences with globose capitula as their terminal units, in which numerous tightly packed flowers develop into fruits that are appressed to each other. This informal assemblage, referred to as the “globose-capitate group,” currently includes 20 described species. Three new species with this distinctive morphology are described and illustrated with photographs of plants in the field or scans of herbarium specimens: S. basiorevolutum from northern Ecuador at the border of Carchi and Sucumbíos provinces; S. chachapoyense from the department of Amazonas, Peru, known only from the province of Chachapoyas; and S. rufilanceolatum from the province of Carchi, Ecuador, north of Maldonado along the border with Colombia, and in the Cerro Golondrinas. For each new species, a distribution map and a preliminary risk of extinction assessment (following the IUCN Red List criteria) are provided; S. basiorevolutum is assessed as Vulnerable, whereas S. chachapoyense and S. rufilanceolatum are both considered to be Endangered.
ISSN:0007-196X
1938-436X
DOI:10.1007/s12228-021-09661-0