Typification of binomials in Xyris section Nematopus (Xyridaceae) published by L. A. Nilsson
Author
Wanderley, Maria das Gracas Lapa
Instituto de Botanica, Sao Paulo, Brazil
gracaw@me.com
text
PhytoKeys
2017
2017-06-05
80
65
76
http://dx.doi.org/10.3897/phytokeys.80.12348
journal article
http://dx.doi.org/10.3897/phytokeys.80.12348
1314-2003-80-65
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816394
6
.
Xyris insignis L.A.Nilsson, Kongl. Svenska Vetenskap.-Akad. Handl. 24(14): 44. 1892.
Type
.
"
Brasilien
".
Minas Gerais
, "in campis alpestribus ad Serro Frio",
Martius s.n.
(in herb. Monac.) (
lectotype
,
designated here
: M! [M0241098]; isolectotype: M! [M0241097])
.
According to the protologue, the
Martius's
type collection is from Serro,
Minas Gerais state
,
Brazil
, but with no information of the collector number and date. It is deposited at the Munich herbarium (M) where there are two sheets of the same collection (M0241097 and M0241098). According to
Smith and Downs (1968)
, the
Martius
collection was cited as a type, but without choosing one of the two
Maritus
sheets deposited in
M. The
lectotype
is therefore designated here as the sheet M0241098. This choice was made because the material is more complete, corresponds to the original description of the species, and has annotations in pencil indicating that it is the
holotype
. Another indication of having been used by
Nilsson (1892)
to describe the species is the fact that there is an envelope with fragments of the dried floral spike. The duplicate sheet (M0241097) thus becomes an isolectotype
.