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19941 SHEVIAK; SPIRANTHES I1
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<br /> Fir,.2. A—C.Spiranthes diturmhs.plant and inflorescences.Jeffemon Co.,Colorado.D.Spiranthes
<br /> rnagnicampaiurst flower,lateral view,and hp,Dcrnalillo Co.,New Mexico-Sheriak 915.E.Spirandies
<br /> rornanoo(jana. flower, lateral view, and lip. Summit Co., Colorado- Sheriak 230211. F. Spiranthes
<br /> dilurrahs, flower,lateral view,and lip.Garfield Co., Utah, Sheriak 230011'.
<br /> Spiranthes diluvialis Sheriak, sp. nov. (Fig. 2)
<br /> Herba erecia, inferno glabra, superne trichomatibus capitatis copiose obsita. Radices tuberose-
<br /> Incrassatac. Folia basalia Imeari-lanceolate.in fructuum mamritatem persislentia. Flores 7.5-15 mm
<br /> longi, levuer cumarino-aromatics,albi vel eburnei,labelli pane centrali saepe flava.Sepata libera vel
<br /> ad basim connata, laloralia late paientia vel laxe incurva vel appressa, lineari•lanceolaia acuminata.
<br /> Labellum ovaium,lanceolatum vel oblongum 7-12 x 2.5-6.8 mm,ad medium consirictum et inter-
<br /> dum subpanduratum.
<br /> Herb, erect, slender to stout. 20-50 cm tall. glabrous below, pubescent above
<br /> with numerous capitate trichomes. Roots tuberously thickened, up to I cm in
<br /> diam. Leares linear-lanceolate, the larger to 28 x 1.5 cm, basal, usually restricted
<br /> to the very base of the stem and rapidly reduced upward to sheathing bracts,
<br /> persisling past anthesis. Spike dense, 3-15 x 1.2-2.5 cm. Floral hiacts ovate,
<br /> attenuate or acuminate,the lower 9-33 mm long. Flowers 7.5-15 mm long. faintly
<br /> fragrant with the scent of countarin, white or ivory, the lip often yellow centrally.
<br /> Sepals free or connate at the base, the dorsal lanceolate,acute, the lateral broadly
<br /> spreading to loosely incurved or appressed, linear-lanceolate, acuminate. Petals
<br /> connivent with the dorsal sepal.linear,acuminate. Lip7-12 x 2.5-6.8 mm,ovate,
<br /> lanceolate, or oblong, with a median constriction and occasionally subpandurale,
<br /> the margin entire or dentate toward the apex. crisped, the basal calli prominent,
<br /> pubescent, Seeds ellipsoidal, nionocinbryonic.
<br /> TYPE: U.S.A. COLORADO. Jeflirson Co.: mesic to wet alluvial meadows along
<br /> Clear Creek just W ofjunct. rts. 6 & 58. Golden, 17 Jul 1982, C. J. Sheriak- J.
<br /> K. Sheriak, 11'. Jennings, L. Long& S. Sinookler2157(HOLOTYPE: NYS; ISOTYPE:
<br /> NY).
<br /> Specimens examined: Csn Esa AIV). Jelrerson Co: locally abundant on floodplain of Clear Creek,ca
<br /> 0.5 mi W of downtown Golden,under highway crossover,19 Aug 1980.S.Smooklerlsicl s.n.(COLO):
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