Lasiacis divaricata var. austroamericana Davidse

• Region

  South America

• Country

  Brazil

• State/Province

  Maranhão

• County/Municipio

  Loreto Mun.

• Locality

  "Ilha de Balsas" region, between the Rios Balsas and Parnaíba. Santa Barbara, due SSE of Lorêto, on shore of Rio Parnaiba

• Elevation

  Alt. 140 m. (459 ft.)

• Coordinates

  -7.5, -45.05

• Distribution

  Map all specimens of this taxon

NEW YORK BOTANICAL GARDEN
FLORA OF BRAZIL
STATE OF MARANHÄO
00650013
HERBARIUM OF IOWA STATE UNIVERSITY
JJift"	Studies in Lasiacis
Lasiacis divaricata (L.) Hitchc. var.
austroamericana Davidse
Determined by Gerrit Davidie 1972
1
yo*
BOTANICAL
®ARD^,
Lasiacis sorghoides (Desv.) H.& C.
(det. J.R.Swallen,1964)
Municipio de Loreto: “Ilha de Balsas” region, between the Rios
Balsas and Parnaiba. SANTA BARBARA, due SSE of Loreto, on
shore of Rio Parnaiba. Flat river* plain, less than 1 km. wide, several
meters above river level, covered with dense babagu palm grove.
Alt. 140 m. 7°30’S., 45°3’W.
Main vegetation types of region: (1) “chapada”, a semi-closed tree woodland (or
"cerrad&o”) on flat tops & steep sides of plateaus, cf°°r tlllly 1,,,J 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 &
courses; (4) “caatlnga”, 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 baba$u palm on flat river plain of Bio Parnaiba and
some of its tributary streams TV^&IlUvegetation 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 (“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: several hundred meters east of the brook,
"Riacho da Simiana”, in deep shad« of banana grove
(formerly a buriti palm; grove). Moist black silt
with much humus*	26 May 1962
Grass. n.v. “Taquari.11
leg. George Eiten and Liene T. Eiten, no. 4-736
Distributed by the Instituto de Botànica, S&o Paulo
00650013