Cyperus luzulae (L.) Rottb. ex Retz.

• Region

  South America

• Country

  Brazil

• State/Province

  Mato Grosso

• County/Municipio

  Barra do Garças Mun.

• Locality

  Serra do Roncador. 235 km along new road NNE of village of Xavantina, (ca. 24 km due S of Royal Society - Royal Geographic Society Base Camp).

• Elevation

  Alt. 450 m. (1476 ft.)

• Coordinates

  -12.85, -51.75

• Distribution

  Map all specimens of this taxon

No botanical uses.

NEW YORK BOTANICAL GARDEN
5/V
35.
FLORA OF BRAZIL
STATE OF MATO GROSSO
SERRA DO RONCADOR
03147582
'Tev* Yo*>
BOTANICAL
Cypems hizuiae
Municipio de Barra do Gargas: ca. 235 km along new road NNE of village of
XAVANTINA (Ca, 24 km due of Royal Society-Royal Geographic
Society Base Camp.) Base Camp is at 12°51’ S. 51 °45’W. Alt.ca.450 m.
At the stream "Corrego dos Porcos", along main road. 4 Oct 1968
Study area of 10 km radius around Base Camp is situated on crest of the Serra do Roacador, a divide between
die Xingu drainage (via Rio Sui&Mipu) to west and Araguaia drainage (via Rio das Mortes) to east The yet
ondissected 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) NW half of study area is
covered with the outer edge of the continuous Amazon forest here a slightly semideciduous dry mesophytic
forest 15-18 m tall on the upland, taller along the seasonally dry brooks. SE half of area has, on the upland,
xeromorphic semideciduous cerrado, in the form of miatall open scrub or open-canopy 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 campo grades directly into gallery
forest through a narrow band of its arboreal form, “cerradfio”. The campos usually have scattered circular
groves of cerrado scrub several meters in diameter on slightly raised soil, each with a termite mound On the
upland die cerrado province grades into the continuous Amazon forest province through a few-km wide
ecotone of cerradfio. Underlying; rock is various kinds of sandstone, giving rise to sli^rtly clayey fine-sandy
deep latosols, very infertile and reddish or yellowish-tan with almost no humus on upland under cerrado, and
dark red with more clay under dry forest "Tn restricted areas under cerrado, small laterite blocks or quartz
the apper soil layer nay be
or no clay, with no humus on
P__________________________________....	or saturated lower slopes and
valley floors. Shales underlie soils in a few valleys. At this date die Base Camp region has not yet been
settled; the forests are virgin; die cerrado and campo are uncut and ungrazed but hawe been subject to ground
fires set by Indians every 3-5 years. In the cerrado, these infrequent tires temporarily reduce density of the
lower shrubs but otherwise have no effect on the physiognomy.
Habitat of this n°: Cleared soil at roadside, the road traversing a wet campo
adjoining a gallery forest; open to the sun. Sedge.
leg. George Eiten & Liene T. Eiten, n° 9116
(Xavantina is now the city of Nova Xavantina.)
03147582