Panicum trichoides Sw.

• Region

  South America

• Country

  Brazil

• State/Province

  Maranhão

• County/Municipio

  Loreto Mun.

• Locality

  "Ilha de Balsas" region, between the Rios Balsas and Parnaiba. About 40 km. south of Lorêto. Place called "Picada". Along the creek, "Riacho da Picada"

• Elevation

  Alt. 250 m. (820 ft.)

• Coordinates

  -7.43, -45.12

• Distribution

  Map all specimens of this taxon

FLORA OF BRAZIL
STATE OF MARANHÀO
Pani cum trichoides Swartz
(det.J. R.Swallen,1964)
Municipio de Loreto: “Ilha de Balsas” region, between the
Rios Balsas and Parnaiba. About 4£) km. south of LORfiTO.
,7° 26’S., 45° 7 ’W. Place called "Picada".
Alt. ca. 250 m.
Main vegetation types of region: (1) “chapada”, a semi-closed tree woodland (or
“cerradfto”) on flat tops & steep sides of plateaus, au eteep> HHf lanAi and on
some areas of rolling or flat dry land; (2) “tabuleiro”, a semi-closed 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 &
..—----- „ omii.ni«n forest of few forest tree species on low
“var-
usually Wltix paims, m oucam	— — —----«------ - -----
courses; (4) “caatinga”, a semi-open forest of few forest tree species o
moist flat land and In narrow valleys between I,tabulelro”-covered hills; (5)
j&o”, low moist flat land with scattered forest trees of one or a few species;
(6) “cocal”, thick groves of babacu calm on flat river plain of Rio Parnaiba and
some of its tributary streams. U AlMvegetation 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” & “varj&o” cultivated or abandoned, forming dense
secondary vegetation of low trees & tall shrubs (“capoeira”); some areas of
“chapada” with dense secondary vegetation (“carrascd”). 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: cultivated land (formerly gallery forest)
along the creek, "Riacho da Picada”. !Soil black,
with much humus.
26 March 1962
Weed grass in deep shade of a banana grove. Each
specimen of this number is a separate plant.
leg. George Eiten and Liene T. Eiten, no. 3860
Distributed by the ¿istituto de Botànica, Sào Paulo
00864614