Sisyrinchium idahoense var. idahoense

Endemic
Synonyms: Sisyrinchium birameum Piper Sisyrinchium idahoense var. birameum Sisyrinchium oreophilum
Treatment appears in FNA Volume 26. Treatment on page 370. Mentioned on page 363, 369.

Stems 2–2.5 mm wide, margins denticulate. Spathes: keels denticulate; outer less than 2 times inner, basally connate 3.8–7 mm; inner 20–30 mm. Outer tepals 13–17 (–20) mm; filaments bluish violet. 2n = 64, 96.


Phenology: Flowering late spring–summer.
Habitat: Moist meadows, stream banks
Elevation: 0–2200 m

Distribution

V26 757-distribution-map.jpg

B.C., Calif., Idaho, Mont., Oreg., Wash., Wyo.

Discussion

The few dodecaploid populations of var. idahoense in eastern Oregon are morphologically indistinguishable from the far more common octoploid plants.

Selected References

None.

Lower Taxa

None.
dehiscing +  and latrorse +
emarginate +  and truncate +
undifferentiated +
aristate +, rounded +, acuminate +  and acute +
Anita F. Cholewa +  and Douglass M. Henderson† +
E. P. Bicknell +
not persistent +
parallel-veined +
ensiform +  and plane +
flattened +, divided +  and filiform +
expanded +
purple blotches;beige;light or dark-brown +
less globose +  and pyriform +
0.3 cm3 mm <br />0.003 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
monochasial +
0.08 cm0.8 mm <br />8.0e-4 m <br /> (0.18 cm1.8 mm <br />0.0018 m <br />) +
B.C. +, Calif. +, Idaho +, Mont. +, Oreg. +, Wash. +  and Wyo. +
0–2200 m +
bluish violet +
stipitate-glandular +
actinomorphic +
not fragrant +
winged +, branched +  and simple +
angled +, compressed +  and terete +
indehiscent +  and loculicidal +
smooth;roughened +
globose +
woody;firm;cartilaginous +
Moist meadows, stream banks +
1-11(-15)-flowered +  and rhipidiate +
evenly curved;straight +
denticulate +
equitant +  and alternate +
cauline +  and basal +
denticulate +
0.1mm;0.5mm +
5.5 cm55 mm <br />0.055 m <br /> (6.5 cm65 mm <br />0.065 m <br />) +
0.26 cm2.6 mm <br />0.0026 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
1.7 cm17 mm <br />0.017 m <br /> (2 cm20 mm <br />0.02 m <br />) +
1.3 cm13 mm <br />0.013 m <br /> (1.7 cm17 mm <br />0.017 m <br />) +
erect;ascending +
petaloid +, zygomorphic +  and actinomorphic +
Flowering late spring–summer. +
Bull. Torrey Bot. Club +
granular +  and rugulose +
globose;obconic +
inner +  and outer +
smooth to scabrous +
unequal +
0-2 times inner spathe +
2 cm20 mm <br />0.02 m <br /> (3 cm30 mm <br />0.03 m <br />) +
monochasial +
winged +  and simple +
compressed +
2mm;2.5mm +
filiform +
not broad +
Sisyrinchium birameum +, Sisyrinchium idahoense var. birameum +  and Sisyrinchium oreophilum +
Sisyrinchium idahoense var. idahoense +
Sisyrinchium idahoense +
variety +
light +  and deep bluish violet or occasionally purple +
distinct +
widely spreading +  and reflexed +
not clawed +
subequal +
not +  and rhizomatous +
herb +  and cespitose +
unequal +