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1997-06-13_REPORT - M1981302 (11)
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1997-06-13_REPORT - M1981302 (11)
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Entry Properties
Last modified
9/9/2022 3:19:17 PM
Creation date
11/27/2007 6:37:16 AM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1981302
IBM Index Class Name
Report
Doc Date
6/13/1997
From
US DEPT OF THE INTERIOR
To
TE/UTE LADIES TRESSES COVERY PLAN
Media Type
D
Archive
No
Tags
DRMS Re-OCR
Description:
Signifies Re-OCR Process Performed
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PART I INTRODUCTION <br /> The Ute ladies'-tresses (Soiranthes diluvialis) was listed as a threatened <br /> species on January 17, 1992 (57 FR 2053) under the authority of the Endangered <br /> Species Act of 1973 (Act) , as amended. The U.S. Fish and Wildlife Service <br /> (Service) is responsible for preparing a recovery plan and guiding actions <br /> that will restore populations and remove threats such that the species no <br /> longer requires protection under the Act and can be removed from the list of <br /> threatened species. This recovery plan describes recovery goals and discusses <br /> how they may be achieved so that the Ute ladies'-tresses can be removed from <br /> the list of threatened plants. <br /> A. Description <br /> S. diluvialis is a perennial , terrestrial orchid with stems 20 to 50 cm (8 to <br /> 20 inches) tall , arising from tuberously thickened roots. Its narrow (1.0 cm <br /> ( .39 inches)) leaves can reach 28 cm (11 inches) long. Basal leaves are <br /> longest and become reduced in size up the stem. The flowers consist of few to <br /> many small white or ivory flowers clustered into a spike arrangement at the <br /> top of the stem. The species is characterized by whitish, stout, ringent <br /> (gaping at the mouth) flowers. The sepals and petals, except for the lip are <br /> rather straight, although the lateral sepals are variably oriented, these <br /> often spreading abruptly from the base of the flower; sepals are free to the <br /> base. The rachis is pubescent with the longest trichomes 0.2 mm (0.008 <br /> inches) long or longer, usually much longer. It blooms, generally, from late <br /> July through August. However, depending on location and climatic conditions, <br /> Ute ladies'-tresses may bloom in early July or may still be in flower as late <br /> as early October. <br /> B. Taxonomy <br /> Prior to the description of S. diluvialis in 1984, workers in Orchidaceae had <br /> tried to accommodate specimens from the West in three taxa of white-flowered <br /> $eiranthes orchids: Soiranthes cernua L.C. Richard, Spiranthes romanzoffiana <br /> Chamisso, and Soiranthes oorrifolia Lindley. <br /> In 1980, a specimen of Soiranthes was collected near Golden, Colorado, that <br /> appeared to be S. cernua. In 1981, live plants were collected at that site <br /> and sent to Dr. Charles J. Sheviak, who initiated studies on the genus <br /> Soiranthes in the early 1970's, for examination. In 1982 and 1983, Dr. <br /> Sheviak visited Colorado and Utah. After examining herbarium specimens and <br /> live specimens in the field and after cytologic study, Dr. Sheviak was <br /> convinced that the Colorado-Utah plants were a new species, which he described <br /> in 1984 (Sheviak 1984) . The type locality is along Clear Creek west of <br /> Golden. <br /> In his original description, Sheviak (1984) suggested that S. diluvialis <br /> resulted from the hybridization of Soiranthes maanicamporum and S. <br /> romanzoffiana during a Pleistocene pluvial period when the region supported <br /> lush grasslands and the two parent species would have been sympatric or <br /> parapatric. Under a cooler and wetter climate, S. romanzoffiana would have <br /> 1 <br />
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