Sisyrinchium montanum
Sisyrinchium nashii
Bermudienne montagnarde, mountain blue-eyed-grass, strict blue-eyed-grass
Nash's blue-eyed grass
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.
branched, with 1–2 nodes, 2.3–4.4 mm wide, glabrous, margins often denticulate apically, similar in color and texture to stem body;
first internode 12–30 cm, longer than leaves;
distalmost node with 2–3 branches.
blades glabrous, bases not persistent in fibrous tufts.
blades glabrous, bases becoming fibrous, persisting in tufts.
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.
borne singly;
spathes with purplish tinge along hyaline margins, obviously wider than supporting branch, glabrous, keels usually entire;
outer 18–25.5 mm, 1 mm shorter to 55 mm longer than inner, tapering evenly towards apex, margins basally connate 2–3.8 mm;
inner with keel straight, hyaline margins 0.3–0.5 mm wide, apex obtuse to truncate, ending at green apex or occasionally extending beyond as 2 obtuse or truncate lobes.
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.
tepals blue to light blue or light purple, bases yellow;
outer tepals 7.2–12.5 mm, apex rounded to emarginate, aristate;
filaments connate ± entirely, slightly stipitate-glandular basally;
ovary similar in color to foliage.
tan to dark brown, sometimes with purplish tinge apically, ± globose to obovoid, 4–6.8 mm;
pedicel erect to spreading.
tan to beige, ± globose to ± obovoid, 2.5–4.8 mm;
pedicel ascending to erect.
globose to obconic, lacking obvious depression, 0.9–1.5 mm, rugulose.
globose to obconic, lacking obvious depression, 1–1.2 mm, rugulose.
= 16.
Sisyrinchium montanum
Sisyrinchium nashii
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.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Margins of outer spathe connate basally 4–5.7 mm; plants drying dark brown or bronze. | var. crebrum |
1. Margins of outer spathe connate basally 1–3.5 mm; plants drying green to olive. | var. montanum |
BC
WA
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
