Mimosa exalbescens Barneby

• Region

  South America

• Country

  Brazil

• State/Province

  Maranhão

• County/Municipio

  Lorêto Mun.

• Locality

  "Ilha de Balsas" region, between the Rios Balsas and Parnaíba. About 25-30 km south of Lorêto. At place called "Sao Joao do Baixo", several km north of Faz. Lagoa. Along trail from Faz. Aldeia to Faz. Morros

• Coordinates

  -7.28, -45.07

• Distribution

  Map all specimens of this taxon

XH. A)rtj*	ttJrj
FLORA OF BRAZIL
** * STATE OF MARANHAO
- ' ? ? '	- IS - ^ >* ' *S*
Mimosa binaacronata (DC*) Xuntze
Sett S. S. Trwin, 1966
Municipio de Lorêto: “Hha de Balsas” region, between the
Rios Balsas and Pamaiba. About 2*>—302ttsouth of LORÊTO.
J°17 ’s>	At place called "Sao J»a# do
Balxon, several km. north of Fas. Lagoa.
'Main vegetation types of region: (1) “chapada”, a semi-closed tree woodland (or
“cerradâo") on flat tops & steep sides of plateaus, w ?*>»> Mlly hind, and on
some areas of rolling or flat dry land; (2) * “tabulelro”, a semi-closed woodland,
or "cerrad&o”, of different physiognomy êc species composition, on tops of hilly
or gently rolling land; (3) “mata”, a closed tropical forest of many tree speeles,
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 oxi low
moist flat innrt and in narrow valleys between “tabuleiro”-covered hills; (5) “var-
j&o”, low moist flat land with scattered forest trees of one or a few species;
(6) “cocal”, thick groves of babaçu palm on flat river plain of Bio Pamaiba and
some of Its tributary streams ftlUjvegetatlon types completely deciduous during
dry season. All brooks intermittent?. Annual ground fires and cattle grazing In
all areas. Part' of “tabulelro” cut over, forming treeless grassy areas; most
“mata” and much "caatinga” & “varjfto” cultivated or abandoned, forming dense
secondary vegetation of low trees & tall shrubs (“capoelra”); some areas of
“chapada” with dense secondary vegetation (“carrasco”). Upland soils grayish,
ton or light reddish brown silt or silty clay, very stony on slopes; lowland soils
mostly reddish brown to black silt loam, silty clay loam or elay loam, without
stones Country rock horizontal light brown sandstone, exposed only on tops
of morros and on cliffs along the Bio Pamaiba.
This habitat: along trail from Paz. Aide la to
Paz. Morroâ. Secondary growth In cut-over,
arboreal “caatinga*; thick with 2~h m. tall
"alagadiça* shrubs. 15 June 1962
Shrub with several ascending stems to 3 1/2 m.
tall, trunks to 7 cm. d. b. h.. .Almost ripe frt.
is green, ripe fruit, is brown, n.v. "alagadiça"
leg. George Eiten and Liene T. Eiten, no. 48 ol
(All specimens of this number from one plant.)
Distributed by the Instituto de Botânica, S&o Paulo	.*•
00933339