Group C Value Fidelity IN CR Taxon IN CR IN CR A A Chara braunii N N N N A A Chara globularis N N N N A A Chara foliolosa N N N N A A Myriophyllum spicatum N N N N A A Nitella flexilis N N N N A A Riccia fluitans N N N N A A Ricciocarpus natans N N N N A C Ceratophyllum demersum 1 5 EL M A A Typha latifolia 1 1 EL EL B C Elodea canadensis 3 5 L M B D Junuos effusus 3 7 L H B C Lemna minor 3 5 L M B C Lycopus americanus 3 5 L M B D Persicaria hydropiperoides 3 7 L H B C Sagittaria latifolia 3 4 L M B C Stuckenia pectinata 3 5 L M C E Brasenia
schreberi 4 10 M EH C C Carex comosa 6 5 M M C C Cephalanthus occidentalis 5 5 M M C D Heteranthera dubia 4 8 M H C D Lemna trisulca 6 7 M H C C Najas flexilis 5 6 M M C D Nuphar advena 6 7 M H C D Nymphaea odorata subsp.
Najas fiexilis and Brasenia schreberi decrease significantly but persist to the uppermost level, indicating that closure of open water over the core site was relatively recent.
Subfossil seeds of Brasenia schreberi and Nuphar advena indicate that open water developed into a shallow marsh.
The area around the coring site in Stage II developed into a shallow marsh, evidenced by seeds of Brasenia schreberi and Nuphar advena, with a fen mat containing Dulichium arundinaceum, Menyanthes trifoliata, Scirpus validus/acutus and Vaccinium macrocarpon becoming ever closer to the coring site.
Inundation of the peatland in Stage III, to the point where standing water was agaln present, is indicated by seeds of Brasenia schreberi and Nymphaea tuberosa.
The transition between Stages I and II is characterized by the disappearance of submergent aquatic macrophytes and the appearance of floating-leaved marsh plants, namely Brasenia schreberi and Nu phar advena.
Stage II is marked by a sharp decline of Najas and the presence of floating-leaved aquatics such as Brasenia schrelieri and Nymphaea tuberosa, indicating a shallow marsh condition.
Carpels in Brasenia
(Cabombaceae) are completely ascidiate despite a long stigmatic crest.
Often associated with Brasenia schreberi, Ceratophyllum demersum Lemna minor, Najas flexilis, Nuphar advena, and Pontedaria cordata.
X X Dulichium arundinaceum Fuirena pumila Ceratophyllum demersum X Nuphar advena X X Nymphaea odorata X Brasenia schreberi X Sarracenia purpurea Impatiens capensis Myriophyllum exalbescens X Andromeda glaucophylla Chamaedaphne calyculata Vaccinium macrocarpon Menyanthes trifoliata Bidens sp.
The presence of Brasenia
schreberi and Ceratophyllum demersum, suggests relatively quiet, protected waters.
Nymphaea tuberosa, Nuphar advena, and Brasenia
An examination of the phytotoxicity of the water shield, Brasenia
Often associated with Brasenia schreberi, Ceratophyllum demersum, Lemna minor, Nalas flexilis, Nuphar advena, and Pontedaria cordata.
Nymphaea odorata, Nuphar advena and Brasenia schreberi, because of the shallow depth, probably grew across the entire water body.