Chamaecrista supplex (Mart. ex Benth.) Britton & Rose ex Britton & Killip

• Region

  South America

• Country

  Brazil

• State/Province

  Maranhão

• County/Municipio

  Loreto Mun.

• Locality

  "Ilha de Balsas" region, between the Rios Balsas & Parnaíba. 2 km north of main house of Fazenda "Morros", about 35 km south of Loréto. Along "Morros"-"Picada" trail

• Elevation

  Alt. 300 m. (984 ft.)

• Coordinates

  -7.37, -45.07

• Distribution

  Map all specimens of this taxon

Chamaecrista supplex (Benth.) Britton & Rose
Britton & Killip
FLORA OF BRAZIL
STATE OF MARANHAO
Cassia cordistipula Mart.
Bet! H. S. Xrwin, 1966
Municipio de Loreto: “Hha de Balsas” region, between the Rios
Balsas and Parnaiba. 2 km» north of main house of Fazenda
“Morros”, about 35 km. south of LORETO. Alt. ca. 300 m. Approx*
7° 22 ’S., 45% ’W. Along !lMorrosH - "Picada" trail*
Main vegetation types of rngien: (1) “chapada”, a semi-closed: tree woodland (or
“cerradao”) on Hat tops «steep sides of plateaus, met BteayMMyAanrt) imii on
some areas of roUing or flat dry land; (2) “tabuleiro”, a semi-closed woodland,
or “cerradSo”, 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 babagu palm on flat river plain of Bio Parnaiba and
some of its tributary streams .M AHPvegetation 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 "caatlnga” & “varj&o” cultivated or abandoned, forming dense
secondary vegetation of low trees & taU shrubs (“capoeira”); some areas of
“chapada” with dense secondary vegetation (“carrasco”). Upland soUs 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:"chapada”: trees to 12 m* tall with trunks
to 5 dm. dib.h* (must thinner), spaced few-10 m* apart.
Shade semi-continuous• Shrubs to 2 l/2 m* tall, spaced
1/2-few meters apart. Ground covered 50$ by grasses,
herbs and low shrubs*	24 March 1962.
HERB forming flat mat.appress^d to ground, not rising
more than 1 cm* from surface of soil* Flowers 5 mm*
j^iam*	Liene T. Eiten, no. 3765
Distributed by the Instituto de Bot&nica, Sao Paulo
New York Botanical Garden
Revision of Cassia sect. Chamaecrista
of the Americas
Cassia supplex Mart« ex Benth.
H. S. Irwin & R. C. Bameby
00978878