Mimosa camporum Benth.

• Region

  South America

• Country

  Brazil

• State/Province

  Maranhão

• County/Municipio

  Loreto Mun.

• Locality

  "Ilha de Balsas" region between the Rios Balsas and Parnaíba. About 40 km S of Lorêto. Near place called "Picada," about 450 m S of the creek, "Riacho da Picada."

• Coordinates

  -7.43, -45.12

• Distribution

  Map all specimens of this taxon

Cited as M\a.
in Bameby, Mem. NYBG 65. 1991.
NEW YORK BOTAMCAL GARDEN
00932489
FLORA OP BRAZIL
STATE OF MARANHÀO
Mimosa aff • camporum Be nth«
Bet* H. S. Irwin, 1966
Municipio de Loreto: “Ilha de Balsas” region, between the
Rios Balsas and Pamaiba. About 40 km* south of LORETO.
ca«7° 26’S., 45° ? tv. Near place called "Picada*» about
450 m. 8 of the creek, "Biaoho da Picada*.
Main vegetation types of region: (1) “chapada”, a semi-closed tree woodland (or
“cerradfto”) on flat tops & steep sides of plateaus, —	and on
some areas of rolling or flat dry land; (2) “tabuleiro”, a semi-dosed woodland,
or "cerrad&o”, of different physiognomy & species composition, on tops of hilly
or gently rolling land; (3) “mata”, a closed tropical forest of many tree species,
usually with palms, in flat stream valleys and In or alongside of brook ravines &
courses; (4) “caatinga”, a semi-open forest of few forest tree species on low
moist flat land and in narrow valleys between “tabuleiro”-covered hills; (5) “var-
jfio”, low moist flat land with scattered forest trees of one or a few species;
(6) “cocal”, thick groves of baba$u palm on flat river plain of Rio Pamaiba and
some of its tributary streamsvA^ AllUvegetation types completely deciduous during
dry season. All brooks intermittent! Annual ground fires and cattle grazing in
all areas. Part of “tabuleiro” cut over, forming treeless grassy areas; most
“mata” and much “caatinga” & “varjao” cultivated or abandoned, forming dense
secondary vegetation of low trees & tall shrubs (“capoeixa”); some areas of
“chapada” with dense secondary vegetation (“carrasco”). Upland soils grayish,
tan, or light reddish brown silt or silty clay, very stony on slopes; lowland soils
mostly reddish brown to black silt loam, silty day loam or day loam, without
stones. Country rock horizontal light brown sandstone, exposed only on tops
of morros and on cliffs along the Rio Pamaiba.	S
This habitat: at head of brook ravine (now dry) out into
gentle slope of side of low plateau. In shade of
arboreal vegetation transitional between forest 4
»chapada»« Fine sandy dark brown soil with a few
pebbles.	25 March 1962.
¿bis a®: leaves very sensitive. Filaments white.
This part consists of one whole plant._
Distributed by the Institute' de Bot&nica, Sfto Paulo
00932489