Southern Ontario Vascular Plant Species List - Conservation Ontario

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PLANTS - http://plants.usda.gov/index.html VASCAN - http://data.canadensys.net/vascan/search NatureServe - http://www.natureserve.org/explorer/servlet/NatureServe?init=Species Ontario Wildflowers - http://www.ontariowildflowers.com/ A full citation for these websites can be found in the References section. Species Code For data entry in the field it is more efficient to write down (or enter) an abbreviated code, rather than writing out the entire plant species name. It is much quicker to record the code APOCANA for Spreading Dogbane, rather than writing out Apocynum androsaemifolium ssp. androsaemifolium. Each seven digit code is constructed by using the first four characters of the genus name followed by the first 3 characters of the species name. Therefore, White Trillium (Trillium grandiflorum) has the 7 digit code TRILGRA. If there is an additional subspecies or variety ranking for a species, then the first two characters of the species epithet are used and the third (last) character consists of the first letter of the subspecies or varietal epithet. Winged Sumac (Rhus copallinum var. latifolia) has the code RHUSCOL. All of the abbreviated codes produced for this listing are unique for each species, subspecies and variety. In situations where the 7 digit code generated is the same for two separate species, then an alternate alphabetical character is used for the seventh digit of the code. For example, Water Arum (Calla palustris) and Spring Water Starwort (Callitriche palustris) would both produce the same seven character code. In this case the code CALLPLS is used for Water Arum, and CALLPLU is used for Spring Water Starwort. Here are some additional examples; Common Lady Fern Athyrium filix-femina var. angustum ATHYFIA Slender Loose-flower Sedge Carex gracilescens CAREGRA Graceful Sedge Carex gracillima CAREGRM Plantain-leaf Sedge Carex plantaginea CAREPLA Broad-leaved Sedge Carex platyphylla CAREPLT For plants which have had their names changed, the original seven digit code will remain the same as before, with only the scientific name changing in the plant listing. For example, Fireweed listed in the previous versions as Epilobium angustifolium, is now listed as Chamerion angustifolium ssp. circumvagum. The 7 digit code EPILANG will remain the same, even though this species has been placed into the genus Chamerion. Often when new varieties are described for an existing species, the resulting code does not match as it did before. For example Spotted Coralroot (Corallorhiza maculata) had the code CORAMAC assigned to it. Now that there are two varieties listed for this species, the original code of CORAMAC is still used for Corallorhiza maculata var. maculata while Corallorhiza maculata var. occidentalis receives the code CORAMAO. vi
The logistics of trying to go back to all of the exiting versions of these databases and changing the plant species code is very cumbersome. Therefore the original codes developed for a species takes precedence even though there have been recent nomenclatural changes. List of Synonyms To make this third edition of the Southern Ontario Plant Species List more user friendly, a list of synonyms has been included. When looking for Round-lobed Hepatica (Hepatica americana) and not finding it in the main species list, then look in the List of Synonyms. Here the name Anemone americana [ANEMAME] is cited, since this binomial is currently used for this species. If a species name is listed twice in the List of Synonyms, it is a result of genetic evidence indicating that a species once thought of as a single species is actually two closely related species. For example Maidenhair Spleenwort (Asplenium trichomanes) used to be considered just one species. However it has been shown that one subspecies grows specifically on calcareous bedrock, while the other subspecies if found on metamorphic or igneous rock outcrops. Asplenium trichomanes is split into two separate subspecies with Asplenium trichomanes ssp. quadrivalens growing on the Niagara Escarpment, while Asplenium trichomanes ssp. trichomanes is found on the Canadian Shield. SRank The Natural Heritage Information Centre uses a ranking system that considers the provincial rank of a species (element) as a tool to prioritize protection efforts. Provincial (Sub-national) ranks are also known as SRANK. These ranks have been assigned using the best available scientific information, and follow a systematic ranking procedure developed by The Nature Conservancy. Sub-national ranks are based on three factors: estimated number of occurrences, estimated community extent, and estimated range of the community within the province. These provincial ranks are summarized below. SH – Possibly Extirpated (Historical); species occurred historically and there is some possibility that it may be rediscovered. Its presence may not have been verified in the past 20-40 years S1 - Extremely rare in Ontario; usually 5 or fewer occurrences in the province, or only a couple remaining hectares S2 - Very rare in Ontario; usually between 6 and 20 occurrences in the province, or only a few remaining hectares S3 - Rare to uncommon in Ontario; usually between 21 and 80 occurrences in the province; may have fewer occurrences, but with some extensive examples remaining S4 - Considered to be common in Ontario. It denotes a species that is apparently secure, with over 80 occurrences in the province vii
Page 1: Southern Ontario Vascular Plant Spe
Page 5 and 6: Table of Contents Introduction ....
Page 7 and 8: Geographical Coverage This species
Page 9: Nomenclature The nomenclature used
Page 13 and 14: club-moss and quillwort. FO Forb he
Page 15 and 16: (NOPD) Northern Ontario Plant Datab
Page 17: Vascular Plant Species List
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Southern Ontario Vascular Plant Spe
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List of Plant Synonyms OLD NAME Aca
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List of Plant Synonyms OLD NAME Ast
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List of Plant Synonyms OLD NAME Car
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List of Plant Synonyms OLD NAME Den
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List of Plant Synonyms OLD NAME Gau
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List of Plant Synonyms OLD NAME Lin
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List of Plant Synonyms OLD NAME Pan
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List of Plant Synonyms OLD NAME Ran
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List of Plant Synonyms OLD NAME Smi
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List of Plant Synonyms OLD NAME Vio
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Southern Ontario Vascular Plant Species List - Conservation Ontario

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