Cyperus surinamensis Rottb.

• Region

  South America

• Country

  Brazil

• State/Province

  Maranhão

• County/Municipio

  Lorêto Mun.

• Locality

  "Ilha de Balsas" region, between the Rios Balsas and Parnaiba. Several km E of main house of Fazenda "Morros", about 35 km south of Lorêto.

• Elevation

  Alt. 300 m. (984 ft.)

• Coordinates

  -7.38, -45.03

• Distribution

  Map all specimens of this taxon

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MM* AÂ/ŸYd****9
Determined by Melinda F. Denton at the
University of Washington. \<iy
FLORA OF BRAZIL
STATE OF MARANHÀO
Cyperus surinamensis Eottb.
(det. L.T.Biten,1970)
Municipio de Lorêto: “Hha de Balsas” region, between the Rios
Balsas and Parnaiba. Several km E of main house of Fazenda
“Morros”, about 35 km. south of LORÊTO. Alt. ca. 300 m.
««. 70 23’S, 45» 2 ”W.	22: May 1962
Main vegetation types of region: (1) “chapada”, a semi-closed tree woodland (or
“cerrad&o”) on flat tops & steep sides of plateaus, aw atssp hÉlly Iwé, and on
some areas of rolling or flat) dry land; (2) “tabuleiro”, a semi-closed woodland,
or “cerrad&o”, of different physiognomy <fe 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-
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 Parnaiba and
some of its tributary streams/*44Jllivegetatlon types completely deciduous during
dry season. All brooks intermittent. Annual ground fired and cattle grazing in
all areas. Part of “tabuleiro” cut over, forming treeless grassy areas; most
“mata” and much “caatinga” & “varj&o” cultivated or abandoned, forming dense
secondary vegetation of low trees & tail shrubs (“capoeira”); 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 clay loam or clay loam, without
stones. Country rock horizontal light brown sandstone, exposed only on tops
of morros and on cliffs along the Bio Parnaiba.	~
This habitat: edge of darned pood At "Sambaiba
In mod in open mm.
Tall sedge*
leg. George Eiten and Liene T. Eiten, no.
_Ihssa, v)
Distributed by the Instituto de Botánica, S&o Paulo
00925497