Sisyrinchium montanum

Greene

Pittonia 4: 33. 1899.

Common names: Bermudienne montagnarde
IllustratedEndemic
Treatment appears in FNA Volume 26. Treatment on page 366. Mentioned on page 352, 356, 361, 365, 367, 371.

Herbs, perennial, cespitose, pale to olive green or dark-brown to bronze when dry, to 5 dm, not glaucous; rhizomes scarcely discernable. Stems simple, obviously winged, (1.5–) 2–3.7 mm wide, glabrous, margins entire (in eastern populations) to denticulate (in western populations) apically, similar in color and texture to stem body. Leaf-blades glabrous, bases not persistent in fibrous tufts. Inflorescences borne singly; spathes usually green or bronze, rarely with purplish margins, glabrous, keels usually denticulate; outer 36–76 mm, 12–46 mm longer than inner, slightly constricted proximal to apex, margins basally connate 2–5.7 mm; inner with keel ± gibbous basally, sinuous proximally, hyaline margins 0.1–0.3 mm wide, apex acuminate to acute, ending 0.9–4.3 mm proximal to recurved green apex. Flowers: tepals dark bluish violet, bases yellow; outer tepals 9–14.5 mm, apex emarginate to retuse, aristate; filaments connate ± entirely, stipitate-glandular basally; ovary similar in color to foliage. Capsules tan to dark-brown, sometimes with purplish tinge apically, ± globose to obovoid, 4–6.8 mm; pedicel erect to spreading. Seeds globose to obconic, lacking obvious depression, 0.9–1.5 mm, rugulose.

Discussion

Varieties 2 (2 in the flora).

Eastern coastal populations of Sisyrinchium montanum appear to have some slight affinity to S. angustifolium (e.g., long connation of outer spathe) and some previous floras have combined the two taxa. Some taxonomists have questioned the recognition of varieties within S. montanum, but we feel that the differences between them are no more subtle than those between varieties generally recognized elsewhere in the genus. Living material was not available to us to investigate breeding barriers. Although Sisyrinchium montanum is considered weedy by D. T. Patterson et al. (1989), I have seen many populations all through the western states and Great Lakes areas and would not consider it weedy in any of these portions of the range.

Selected References

None.

Key

1 Margins of outer spathe connate basally 4–5.7 mm; plants drying dark brown or bronze. Sisyrinchium montanum var. crebrum
1 Margins of outer spathe connate basally 1–3.5 mm; plants drying green to olive. Sisyrinchium montanum var. montanum
... more about "Sisyrinchium montanum"
dehiscing +  and latrorse +
undifferentiated +
aristate +, emarginate +  and retuse +
Anita F. Cholewa +  and Douglass M. Henderson† +
Greene +
not persistent +
parallel-veined +
ensiform +  and plane +
flattened +, divided +  and filiform +
expanded +
tan;dark-brown +
Bermudienne montagnarde +
monochasial +
0.09 cm0.9 mm <br />9.0e-4 m <br /> (0.15 cm1.5 mm <br />0.0015 m <br />) +
North America +
stipitate-glandular +
actinomorphic +
not fragrant +
winged +, branched +  and simple +
angled +, compressed +  and terete +
indehiscent +  and loculicidal +
smooth;roughened +
globose +
woody;firm;cartilaginous +
1-11(-15)-flowered +  and rhipidiate +
gibbous +  and denticulate +
equitant +  and alternate +
cauline +  and basal +
hyaline +  and purplish +
entire +  and denticulate +
0.1mm;0.3mm +
constricted +
1.2 cm12 mm <br />0.012 m <br /> (4.6 cm46 mm <br />0.046 m <br />) +
0.9 cm9 mm <br />0.009 m <br /> (1.45 cm14.5 mm <br />0.0145 m <br />) +
erect;spreading +
petaloid +, zygomorphic +  and actinomorphic +
granular +  and rugulose +
globose;obconic +
bronze +  and green +
smooth to scabrous +
unequal +
W1 +, Illustrated +  and Endemic +
monochasial +
winged +  and simple +
compressed +
2mm;3.7mm +
filiform +
not broad +
Sisyrinchium montanum +
Sisyrinchium +
species +
violet +  and dark bluish +
distinct +
widely spreading +  and reflexed +
not clawed +
subequal +
not +  and rhizomatous +
pale;olive green or dark-brown +
herb +  and cespitose +
unequal +