Ichnanthus tenuis (J.Presl & C.Presl) Hitchc. & Chase

• Region

  South America

• Country

  Brazil

• State/Province

  Maranhão

• County/Municipio

  Loreto Mun.

• Locality

  "Ilha de Balsas" region, between the Rios Balsas and Parnaíba. Several km E of main house of Fazenda "Morros", about 35 km. south of Lorêto. A little SE of house at "Sambaíba", along the brook "Riacho da Macaúba"

• Elevation

  Alt. 300 m. (984 ft.)

• Coordinates

  -7.38, -45.03

• Distribution

  Map all specimens of this taxon

00863688
Ichnanthus tenuis (Presi) H.& C.
(det • J .R.Swallen,1964)
Municipio de Loreto: “Ilha de Balsas” region, between the Bios
Balsas and Parnaiba.SeYeral Ion F. of main house of Fazenda
'‘Morros”, about 35 km. south of LORfiTO. Alt. ca. 300 m.
ca. 7<j23 ’S., 45*8-3 ’W. A little SE .of-house at “Sambaiba” •
Main vegetation types of region1f (1) “chapada”, a semi-closed tree woodland (or
“cerrad&o”) on flat tops & steep sides of plateaus, Mk-st*q»-MHg»4Md, 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) “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-
jao”, 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 Pamaiba
some of its tributary streams. MdftU vegetation types completely deciduous during
dry season. All brooks intermittent. Annual ground firea and cattle grazing In
all areas. Part of “tabuleiro” cut over, forming treeless grassy areas;
“mata” and much “caatinga” & “varjao” 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 feilty clay, very stony on slopes; lowland hqu«
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 Pamaiba.
This habitat: moist, deeply shaded spot below trees
in gallery forest along the brook, "Riacho da
HMacauban •
Grass, growing in thick layer of Selaginella.
22 May 1962
leg. George Eiten and Liene T. Eiten, no. 4647
Distributed by the Instituto de Botànica, Sáo Paulo
00863688