Bolivian Mimosa (Leguminosae, Mimosoideae): three new species and a species checklist
Author
Margoth Atahuachi
Author
M. Leontien Van Der Bent
Author
John R. I. Wood
Author
Gwilym P. Lewis
Author
Colin E. Hughes
text
Phytotaxa
2016
2016-05-13
260
3
201
222
journal article
37705
10.11646/phytotaxa.260.3.1
42186781-dd9d-418a-ba65-05680906269a
1179-3163
192175
58. *
Mimosa
aff.
procurrens
Benth.
Two recent collections (of flowering material, with very immature fruits),
J.R.I. Wood & D. Soto 27165
(LPB, K, USZ) and
27339
(LPB, K, USZ) from near Taperas, Prov. Chiquitos,
Santa Cruz
clearly belong within Barneby’s (
1991
) subseries
Hirsutae
of sect.
Mimosa
, ser.
Mimosa
, and most closely match
M. procurrens
, representing a new country record for this subseries and species, with
M. procurrens
previously only known from southeastern
Goias
and the
Distrito Federal
in
Brazil
. While these collections are in almost all respects a good match for
M. procurrens
, the Taperas plants have an appressed indumentum on the leaflets, while
M. procurrens
is described as having glabrous or thinly spreading setose leaflets. With several closely allied species in subseries
Hirsutae
from adjacent
Brazil
and
Paraguay
, all of them currently represented by few collections, the identification of these new Bolivian collections as
M. procurrens
should be verified, especially once mature fruits are available. This species in
Bolivia
forms a prostrate functionally herbaceous plant arising from a small knotty xylopodium and is immediately recognizable within
Bolivia
by its sub-palmate (palmatipinnate) leaves with two pairs of pinnae. It grows in
cerrado Chaqueño
(Abayoy), apparently resprouting and flowering after fire, sometimes in seasonally moist places, but often on drier porous soils. Currently known in
Bolivia
from only a single locality and from incomplete material. Fruiting collections and additional populations should be sought.