Sisyrinchium langloisii
roadside blue-eyed grass
branched, with 1 or 2 nodes, often purplish, 0.5–2(–2.2) mm wide, glabrous, margins entire to denticulate, similar in color and texture to stem body;
first internode 3.2–7.2 cm, usually shorter than leaves;
distalmost node with 1–3 branches.
blades glabrous, bases not persistent in fibrous tufts.
borne singly;
spathes purplish-tinged basally and sometimes along margins, obviously wider than supporting branch, glabrous, keels entire to occasionally denticulate;
outer 12.5–25 mm, 0.9–2.7 mm longer than inner, tapering evenly towards apex, margins basally connate 2.2–3.8(–5) mm;
inner with keel evenly curved or straight, hyaline margins 0.2–0.4 mm wide, apex acuminate to acute or occasionally obtuse, ending 0–1.5 mm proximal to green apex.
tepals pale blue to bluish violet or white, bases yellow;
outer tepals 6.1–10 mm, apex rounded to truncate, aristate;
filaments connate ± entirely, glabrous or sparsely stipitate-glandular basally;
ovary similar in color to foliage.
medium brown to black, ± globose, 3.1–4.7 mm;
pedicel spreading or ascending.
globose to obconic, lacking obvious depression, 0.9–1.1 mm, rugulose.
= 32.
Sisyrinchium langloisii
Sisyrinchium implicatum E. P. Bicknell probably belongs here; the type (Hilgard s.n., Apr 1858, Calhoun Co., Mississippi, MO) was not seen.
Sisyrinchium langloisii is to be expected in northeastern Mexico.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
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