Cystopteris tenuis (Michx.) Desv.

• Region

  North America

• Country

  United States of America

• State/Province

  Illinois

• County/Municipio

  LaSalle Co.

• Locality

  Starved Rock State Park, west of South Ottawa; west side upper LaSalle Canyon. South side IL Rt. 71, 20-50 feet from bridge culvert.

• Elevation

  Alt. 158.5 - 164.6 m. (520 - 540 ft.)

• Coordinates

  41.3099, -88.9717

• Distribution

  Map all specimens of this taxon

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PLANTS OF ILLINOIS, USA
Cvstopteris tenuis (Michx.) Desv.
Dryopteridaceae
Det.: S.R.Hill, (ILLS) ¿003
LA SALLE COUNTY 41° 18’ 35.5?” N. Lat. 088° 58’
17.96” W. Long. T. 33N, R. 2E, SW1/4 SW1/4 SW1/4
SECT. 23 Starved Rock State Park, west of South
Ottawa; west side upper LaSalle, Canyon; Starved Rock
7.5’ quad. South side IL Rt. 71, 20-50 feet from bridge
culvert; elevation 158.5 m - 164.6 m (520 - 540 ft).
Nearly vertical shaded wet St. Peter’s Sandstone
outcrop.
Sandstone seep, slightly degraded, with Aster
cordifolius, Polystichum acrostichoides, Cystopteris
spp., Hydrangea arborescens, Carpinus, Staphylea,
Dryopteris marginalis. Local, infrequent, with
bryophytes along stream; base of frond (stipe) dark
purplish-black.
Steven R. Hill 35221
29 May 2003
02530190