Cordiera humilis var. amplexicaulis (S.Moore) C.Perss. & Delprete

Cordiera humilis (K. Schum.) O. Kuntze
var. amplexicaulis (S. Moore) C. Persson & P.G. Delprete
Det. C. Persson & P.G. Delprete, 2003
The New York Botanical Garden (NY)
FLORA OF BRAZIL
STATE ÓF MATO GROSSO
SERRA DO RONCADOR
¿f.
IO.
Mis'
Municipio de Barra do Garzas: 255 km alone new road NNE of
village of XAVANTINA (Ca#10 km due SW of Royal Society-
Royal Geographic Society Base Camp. Base Camp is at 12°51’S. 51°45’W.)
Ait. ca. 450 m. Along "Lag© Leo" trail. 11^0c|
(Area of 10 km radius around Base Camp is situated on crest of the Serra do
Roncador, a gently-sloped divide between Xingu drainage (via Rio SuiiL Migu)
to west end Aragu6ia drainage (via Rio das Mortes) to east. The yet undlssected
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 forest, 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 cerrado, in the form 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 teAnite mound. On the upland the cerrado region
grades into the continuous dry forest 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 t.ftta 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
HaMtat’S'Stt«: in low-tree & scrub woodland
cerrado west of highway* (This n*t shrub
2 1/2 m tall* Fruit pear-shaped) 23 mm long
"by 23 mm diam., light green to yellowish-
green before ripe, brown when ripe* Palp
edible, tastes like dried prunes.
leg. George Eiten & Liene T. Eiten, n.° 9292
n*v» "marmelada" or "pgrittzinho" _
Distributed by the Instituto de Bot&nica, Sao Paulo
NEW YORK BOTANICAL GARDEN
00949259
00949259