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Chromosome Counts from the Flora of the Juan Fernandez Islands, Chile. III.

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Title:Chromosome Counts from the Flora of the Juan Fernandez Islands, Chile. III.
Authors:Sun, Byung Yun
Stuessay, Tod F.
Crawford, Daniel J.
Date Issued:Jul 1990
Publisher:University of Hawaii Press
Citation:Sun BY, Stuessy TF, Crawford DJ. 1990. Chromosome counts from the flora of the Juan Fernandez Islands, Chile. III. Pac Sci 44(3): 258-264.
Abstract:Thirty-four chromosome counts are reported from populations
in 20 species from Masafuera in the Juan Fernandez Islands, Chile. New species
counts are in Abrotanella crassipes (2n = 18), Carpobrotus aequilaterus (n = 9),
Coprosma pyrifolia (n = 22), Drimys confertifolia (n = ca. 43), Euphrasia Jormosissima
(n = 44), Parietaria debilis (n = 8), and UrticaJernandeziana (n = ca.
11). A new chromosomal level for Hypochoeris glabra (n = 12) also is provided.
The taxonomic implications of certain of these counts are discussed. These data
help extend chromosomal information for endemic taxa of the archipelago as
part of broad evolutionary studies on the origin of the vascular plants. This study
again emphasizes the absence of aneuploid or euploid chromosomal alterations
during speciation within the archipelago.
Appears in Collections: Pacific Science Volume 44, Number 3, 1990

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