Sloanea uniflora D.Samp. & V.C.Souza

FLORA OF BRAZIL
STATE OF MATO GROSSO
SERRA DO RONCADOR
MQycspenm*	?
(JupiJet i	ftH)
(few Yo*£.
BOTANICAL
.garde^
PONTIFICIA UNIVERSIDAD CATOLICA DEL ECUADOR
Sloanea ternfflora (Moc. and Sessé) Standl.
Fecha: Abril, 5 del 2005 det. Jaime L Jaramülo A
INSTITUTO NACIONAL DE PESQUISAS DA AMAZONIA
Sloanea tern if lora(Moe.& Sessé) Standl.
Det D.A]faro Castañeda
NEW YORK BOTANICAL GARDEN
04385780
Monograph of American Sloanea
Sloanea uniflora D. Sampaio & V. C. Souza
Det. T.D. Pennington (Kew) 2014
Municipio de Barra do Gargas:Ca *300 km along new road NNE of
village of XAVANTINA. ( Ca.50km due $ of Royal Society-
Royal Geographic Society Base Camp. Base Camp is at 12°51’S. 51°45*W.)
Alt. ca. 450 m.	Sept 1968
At the Rio Suia-migu.
(Area of 10 km radius around Base Capap is situated on crest of the Serra do
Roncador, a gently-sloped divide between JKingu drainage (via Rio Sui& Migu)
to west end AraguSia drainage (via Rio das MorteS) tor east. The yet undissected
few-km wide crest is flat or gently rolling with a few low lateritic scarps and
ridges. Brook valleys with very gentle to moderately steep slopes. Base Camp
area is exactly at climatic boundary between Amazonian forest region and central
• Brazil ‘‘cerrado” region (savanna sens. lat.>. North-western half of area is covered
with the outer edge of the continuous Amazonian foregt, here a slightly semide-
ciduous dry mesophytic forest 15-18 m tall on the upland, taller along the
seasonally dry brooks. Southeastern half of area has, on the upland, xeromorphic
semideciduoUs >c£rrado, in the fqnfe of medium-tall open scrub or tree-and-scrub
woodland, With "evergreen gallery forests 20-30 m tall along the permanent brooks,
usually a band of seasonally marshy grassy campo, a few meters to a few tens
of meters wide, borders the gallery forests, separating them from the cerrado,
but where the campo is lacking, the cerrado grades directly into gallery forest
through a narrow band of its, arboreal form, “cerradSo’.\ The campos usually
have scattered circular groves of cerrado scrub several meters in diameter on
slightly raised soil, each with a .wmite mound. On the upland the cerrado region
grades into the continuous dry^ot-est region through a few-km wide ecotone of
cerradSo. Underlying rock is various kinds of sandstone, giving rise to slightly
clayey fine-sandy deep latosols, sterile and reddish or yellowish-tan with almost
no humus on upland under cerrado, and dark red with more clay under dry
forest. In restricted areas under cerrado, small laterite blocks or quartz pebbles
may form a thin permeable subsurface layer, or the upper soil layer may be
purely of laterite pebbles. Valley soils are deep light; gray fine sand with little
or no clay, sterile on drier upper slopes, black with 'humus in upper layer on
moister or soaking lower slopes and floors. Shales underlie soils in a few valleys.
At this date the Base Camp region has not yet been settled; the forests are virgin;
the cerrado and campo are uncut and ungrazed, but have been subjected to ground
fires set by Indians every 3-5 years. In the cerrado, these infrequent fires
temporarily reduce density of the lower shrubs but otherwise have no effect
on the physiognomy.)	_ , . - «, _ ,
Habitat of this n.°: edge of a lake in a low forest*
This nshrub 5 m tall*
leg. George Eiten & Liene T. Eiten, n.° &925
Distributed by the Instituto de Botánica, SSo Paulo
04385780