A New and Rare, Plate-Shaped Geranium from the Cumbres Calchaquíes, Tucumán, Argentina

A New and Rare, Plate-Shaped Geranium from the Cumbres Calchaquíes, Tucumán, Argentina

A new species of Geranium endemic to a small (~10 ha) area of the high Cumbres Calchaquíes, Tucumán, Argentina, is described. The species is unique within the genus in its highly condensed, plateshaped growth form, its subterranean branching system, its thick, deep taproot, and its minute leaves wit...

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Veröffentlicht in:Brittonia 1998-10, Vol.50 (4), p.467-472
1. Verfasser: Halloy, Stephan R. P.
Format: Artikel
Sprache:eng
Schlagworte:
Beak
Calyx
Crop science
Diurnal variations
Endemic species
Fluctuations
Food crops
Freeze thaw cycles
Geranium
Leaves
Moisture effects
New species
Pedicels
Petioles
Plants
Soil moisture
Soil temperature
Soil water
Stems
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Beschreibung
Zusammenfassung:A new species of Geranium endemic to a small (~10 ha) area of the high Cumbres Calchaquíes, Tucumán, Argentina, is described. The species is unique within the genus in its highly condensed, plateshaped growth form, its subterranean branching system, its thick, deep taproot, and its minute leaves with mostly 5-7 lobes. The environment is cold (~1.5 C mean annual temperature), but equable(low diurnal fluctuations). Soils are subject to intense moisture fluctuations and freeze-thaw cycles. The total population of the species is estimated at
ISSN:0007-196X
1938-436X
DOI:10.2307/2807756