Three new grass records for Madagascar
Author
Vorontsova, Maria S.
Royal Botanic Gardens, Kew, Richmond, Surrey, TW 9 3 AB, United Kingdom
m.vorontsova@kew.org
Author
Nanjarisoa, Olinirina Prisca
Kew Madagascar Conservation Centre, II J 131 B, Ambodivoanjo Ivandry, Antananarivo 101, Madagascar.
Author
Besnard, Guillaume
Université de Toulouse, ENFA, UMR 5174 EDB (Laboratoire Evolution & Diversité Biologique), route de Narbonne 118, 31062 Toulouse, France and CNRS, Université Paul Sabatier, UMR 5174 EDB, 31062 Toulouse, France.
text
Candollea
2014
2014-07-01
69
1
85
87
journal article
3379
10.15553/c2014v691a10
777b3eba-ef2c-4947-9763-77d66526fd6d
2235-3658
5715359
Ehrharta stipoides
Labill.
,
Nov. Holl. Pl. 1: 91. 1805
.
≡
Microlaena stipoides
(Labill.) R. Br.
, Prodr.: 210. 1810.
Typus:
AUSTRALIA
.
Tasmania
:
Capite van-Dieman
,
Labillardière
s.n.
(
holo-
:
FI
)
.
Observations.
– An Australian and South East Asian species,
Ehrharta stipoides
Labill.
(also referred to as
Microlaena stipoides
(Labill.) R. Br.
or meadow rice grass, now included in the genus
Ehrharta
Thunb.
following
Verboom & al. 2003
) is recorded as naturalised in Kwa-Zulu Natal, Sri Lanka, and Easter Island (
WCSP, 2014
), and in both Hawaii and Réunion, where it has become invasive (
PACIFIC ISLAND ECOSYSTEMS AT RISK, 2014
). It invades disturbed sites rapidly as the awned florets are dispersed on clothing or animal fur and is reported to increase with fire (
HAWAIIAN ALIEN PLANT STUDIES, 2014
). With its distinctive long awns this species is rarely misidentified and is more likely to attract the attention of collectors than other
Poaceae
. The lack of other collections and other sightings suggests this could be a recent arrival brought in by visitors to the Andringitra National Park. No other species of
Ehrharta
have been recorded in Madagascar in spite of the common occurrence of
E. erecta
Lam.
in South Africa and Réunion.
Specimen examined.
–
MADAGASCAR
. Prov.
Fianarantsoa
:
Parc National Andringitra
,
Riampotsy
, at camp 3, single plant sheltered under the picnic table,
22°10’49’’S 46°54’12’’E
,
2064 m
,
28.X.2013
,
Nanjarisoa
,
Vorontsova
,
Rakotonasolo
&
Joseph
90
(
K
!,
P
!,
TAN
!)
.