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Natural communities are not listed in order of frequency of occurrence, but are rather derived from the full set of natural communities, organized by Ecological Group. In many cases, the general habitat descriptions should provide greater clarity and direction to the surveyor. In future versions of the Rare Species Explorer, we hope to incorporate natural community fidelity ranks for each taxon.

The primary need for this species is a status survey to obtain much more detailed habitat information. The species likely requires protection of habitat and maintenance of a semi-open condition. Random meander search covers areas that appear likely to have rare taxa, based on habitat and the judgment of the investigator. Plants and Animals.

Sisymbrium – Wikipédia, a enciclopédia livre

Salix pellita Satiny willow Emmet J. Emmet J. Key Characteristics Shrub of northern beaches and riverbanks; leaves narrowly lanceolate with smooth, inrolled margins, green above and densely silky-hairy beneath. Habitat Satiny willow grows along marshy river banks, and sandy shores. Natural Community Types Emergent marsh Northern shrub thicket Northern wet meadow Sand and gravel beach Volcanic bedrock lakeshore Methodology For each species, lists of natural communities were derived from review of the nearly 6, element occurrences in the MNFI database, in addition to herbarium label data for some taxa.

Associated Plants No data are available concerning associates in Michigan. Management Recommendations The primary need for this species is a status survey to obtain much more detailed habitat information. Survey Methods Random meander search covers areas that appear likely to have rare taxa, based on habitat and the judgment of the investigator. References Survey References Elzinga, C. Salzer, and J. Measuring and Monitoring Plant Populations. BLM Technical Reference Goff, G.

Dawson, and J. Site examination for Threatened and Endangered plant species. Environmental Management 6 4 : Nelson, J.


  • PDF Download Flora of North America: Volume 7: Magnoliophyta: Salicaceae to Brassicaceae: North.
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Rare Plant Field Survey Guidelines. In: J. Smith and R. Inventory of rare and endangered vascular plants of California. California Native Plant Society, Berkeley. Nelson, J. Natural Areas Journal 5 3 In: Conservation and management of rare and endangered plants.

About this book

California Native Plant Society, Sacramento. Technical References Chadde, S.


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  6. A Great Lakes Wetland Flora. A complete, illustrated guide to the aquatic and wetland plants of the Upper Midwest. Stem leaves are alternate, dark green, egg-shaped ovate to lanceolate, or lanceolate with their tapered end at the base oblanceolate , and 1 to 10 cm long and may be simply pinnate, bipinnate or the lower ones again pinnatifid. They are sessile to short stalked petiolate , the upper blades are smaller and upper lobes often narrower.

    The basal leaves usually wither by flowering. The flowers are borne separately on short equal stalks along the stem raceme and it elongated as it matures. Axes of the raceme have stalked glands. The flowers have yellow sepals that are oblong, 0. The petals are whitish or yellow, narrowly lanceolate with the tapered end at the bottom oblanceolate and 1 to 3 mm long by 0.

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    The fruit siliques are club-shaped clavate , broadly linear, elongated 4 to 13 mm long by 1. The seeds number 5 to 10 arranged in two rows biseriate in each of the two cavities locules. FNA For positive identification the entire plant with leaves and either mature fruits or flowers is needed. There are two other Descurainia taxa in New York. Descurainia sophia is a weedy species covered with eglanduar stellate hairs, giving the plant a white appearance.

    Flora of North America North of Mexico, Volume 7: Magnoliophyta: Salicaceae to Brassicaceae

    It has eglandular hairs densely covering the herbage, but it may have glandular hairs scattered in the inflorescence. It has rose colered sepals at least on the tip , smaller sepals and petals 0. Northern tansy-mustard flowers late May to mid-June with fruits persisting until early September. The time of year you would expect to find Northern Tansy-mustard flowering and fruiting in New York. Northern Tansy-mustard Descurainia pinnata ssp. Flora of North America Editorial Committee.

    Flora of North America North of Mexico. Magnoliophyta: Salicaceae to Brassicaceae. Oxford University Press, New York. Fernald, M. Gray's Manual of Botany. Van Nostrand, New York. Gleason, Henry A. Holmgren, Noel. Mitchell, Richard S.

    Taxonomic Comments

    Contributions to a Flora of New York State. Checklist IV. Bulletin No. New York State Museum.

    Panarctic Flora

    Albany, NY. New York Natural Heritage Program. Weldy, T. New York flora atlas. Landry, K. Campbell, and L. Online Conservation Guide for Descurainia pinnata ssp. Accessed September 22, Descurainia pinnata Todd Stout. For animals, taking, importation, transportation, or possession is prohibited, except under license or permit. For plants, removal or damage without the consent of the landowner is prohibited.


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