The genus Carex of Renfrew County:
A comparative study

By Grant A. Bickel, 2020

Carex castanea Wahl., Chestnut Sedge (Section HYMENOCHLAENAE)

Carex castanea is sparse in Renfrew County. It is a species of alvars and calcareous woodlands/shores

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Achenes, perigynia and scales of Carex castanea

Figure 1. Achenes, perigynia and scales.
Inflorescence of Carex castanea

Figure 2. Inflorescence.
Carex castanea in natural habit

Figure 3. Inflorescence in natural habit.
Carex castanea in natural habit

Figure 4. Inflorescence in natural habit.
An occurrence map of Carex castanea in Renfrew County

Figure 5. Occurence map for Renfrew County and surrounding area.
Accession records for specimens from Renfrew County
Accession # Collector Date
CAN 608978 G.A. Bickel 2014-June-21
DAO 859647 A. Ward, S. Kyte, G. Gregorich, P.M. Catling & G. Mitrow 2011-June-02
CAN 498233 A. Vogg 1984-August-04
CAN 487280 S.J. Darbyshire & W.J. Crins 1983-June-05