About
The dataset is primarily based on herbarium records within Massachusetts (and in some cases within most of New England except northernmost parts of NH and VT) retrieved from CNH Portal and also on Natural Heritage & Endangered Species Program (NHESP) Massachusetts records by town (2017) for rare plants.
It may also include generic records, such as observations published in county floras, as well as salicicola photo records.
This application employs client-side JavaScript Library from OpenLayers (http://www.openlayers.org); it does not use a GIS-enabled database.
Disclaimer
Each record is to be verified, as records retrieved from CNH Portal are not free from database or parsing errors. This database may not yet contain recent additions to CNH Portal records for every taxon (work in progress).
In the current version, some records pertaining to cultivated plants may not be excluded.
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Anemone virginiana
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Calycanthus floridus
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Carex panicea
— millet sedge, grass-like sedge
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Persicaria hydropiper
— waterpepper smartweed, water pepper
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Persicaria virginiana
— jumpseed, Virginia smartweed
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Polygonum achoreum
— Blake's knotweed
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Polygonum aviculare
— common knotweed, dooryard knotweed, doorweed
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Polygonum aviculare ssp. aviculare
— common knotweed, dooryard knotweed, doorweed
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Polygonum aviculare ssp. depressum
— mat-forming common knotweed
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Polygonum aviculare ssp. neglectum
— narrow-leaved common knotweed
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Polygonum aviculare ssp. rurivagum
— fibrous-veined common knotweed
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Polygonum buxiforme
— boxleaf knotweed, box knotweed
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Polygonum erectum
— upright knotweed, erect knotweed
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Polygonum glaucum
— seaside knotweed
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Polygonum ramosissimum
— saltmarsh knotweed
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Polygonum ramosissimum ssp. prolificum
— productive yellow-flowered knotweed, productive saltmarsh knotweed
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Polygonum ramosissimum ssp. ramosissimum
— bushy yellow-flowered knotweed, bushy saltmarsh knotweed
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Polygonum tenue
— slender knotweed, rock knotweed
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Viola ×populifolia
— poplarleaf hybrid violet (palmate-leaved × common blue)
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TownMapper version: 5.1.5 alpha [revno 5+]
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