A NEW COMBINATION IN LOLIUM PERENNE (POACEAE: POEAE); L. PERENNE SUBSP. STOLONIFERUM

2010·0.72 MB·English

by  Joseph K Wipff

NEW
A
COMBINATION LOLIUM PERENNE
IN (POACEAE: POEAE);
PERENNE STOLONIFERUM
SUBSP.
L.
Joseph
K.Wipff,lll
West Coast Research Center
Barenbrug USA,
Inc.
36030 Tennessee
Rd.
Oregon
Albany, 97322, U.S.A.
ABSTRACT
RESUMEN
Lawson (1836) described a very distinct taxon of the Lolium perenne complex as Lolium perenne var. stoloniferum,
new
giving the common name of ‘Spreading Ryegrass.’ Lawson described this taxon as follows;
it
n very sparingly.
The very long determinate-stolons, which root at the nodes, and aggressive spreading habit of L. stoloniferum
are very distinct from L. perenne sensu stricto and warrants recognition at the subspecific level, thus neces-
new
combination.
sitating the following
comb,
subsp. stoloniferum (C. Lawson) Wipff, et stat. i
le L.
Hwy
OREGON. 226
C. Uwson, Agric. Man. 104. 1836. Type: Linn Co.: S of anc
Lebanon, on West Coast Research Center farm, Barenbrug USA, Inc. 22 Jun 2i
the
MO,
BRCH, NY).
here; isoneotypes: BRIT, L,
specimens within the protologue and no record of collecti
cited
Discussion regarding the basionym:
At Lawson was describing a new species because his protologue (pg. 104) started
appears that (1836)
first
it
as follows; “10. Spreading Ryegrass (L. stoloniferum).”
But an examination of his treatment reveals several places where his intention that he recognized this
new
he was actually describing a variety of
taxon at the varietal rank, and not at a specific rank. Indicating
new
taxon rank
new Lawson (1836) explicitly recognized this at the
L. perenne and not a species of Lolium.
of a variety on the following pages.
there are several varieties of the
which have received an extensive cultivation,
Pg. 102. .“Uke other plants
1.
. .
Common which follows;—
Ryegrass, the principal of are as ...” ^
E^gi^s.
Spre^ing
one which (no. 10) being
He then goes on to describe 11 varieties of L. perenne,
name remarkably stoloniferous
applied to a
“10 (L stolom/erum).-This is
2. Pg. 104. Spreading Ryegrass
which were procured from Germany, ...”
variety, the seeds of
many more
of infenor
3. Pg. 105. “The above are the most esteemed varieties of Lolium perenne, but there are
permanent
importance, and possessing less characters.”
684
ACKNOWLEDGMENTS
(HUH)
i for his invaluable as«
REFERENCES
C
Lawson, 1836. Agriculturist's manual: agricultural plants cu tivated Europe; climate of Great Forming
in Britain.
Museum
a report of Lawson's Agricultural in Edinburgh. lliam Blackwood and Sons, Edinburgh, Scotland.
\