Flora of North America species comparison

branched, with 1 or 2 nodes, 0.8–1.9 mm wide, usually glabrous, margins entire, similar in color and texture to stem body;

first internode 11–36 cm, longer than leaves;

distalmost node with 2–3 branches.

simple, 1.2–2.5 mm wide, glabrous or scabrous, margins usually entire, similar in color and texture to stem body.

blades usually glabrous, bases occasionally becoming fibrous, but not persistent in tufts.

blades usually glabrous, bases occasionally becoming fibrous but not persistent in tufts.

borne singly;

spathes green or occasionally with purplish tinge on margins, obviously wider than supporting branch, glabrous or slightly scabrous, keels entire;

outer 12–16.1 mm, 1.4 mm shorter to 1.5 mm longer than inner, tapering evenly towards apex, margins basally connate 3–5.2 mm;

inner with keel evenly curved or straight, hyaline margins 0.2–0.6 mm wide, apex broadly rounded to truncate, usually erose, ending 0–0.5 mm proximal to green apex or, occasionally, exceeding it by up to 0.5 mm.

borne singly;

spathes green to purplish, glabrous or scabrous, keels usually entire;

outer 22–50 mm, 10–32 mm longer than inner, tapering evenly towards apex or occasionally slightly constricted proximal to apex, margins distinct or rarely connate basally to 1 mm;

inner with keel usually gibbous, hyaline margins 0.1–0.3 mm wide, apex acuminate to acute, ending 0.4–3.5 mm proximal to green apex.

tepals light blue or bluish violet to purple or occasionally white, bases yellow;

outer tepals 6.3–11 mm, apex emarginate to truncate, aristate;

filaments connate ± entirely, stipitate-glandular basally;

ovary blackish, in contrast with much lighter foliage.

tepals white to pale blue, bases yellow;

outer tepals 7–12.7 mm, apex rounded to emarginate, aristate;

filaments connate ± entirely, stipitate-glandular basally;

ovary similar in color to foliage.

dark brown to black or purplish black, ± globose to obovoid, 2–4.1 mm;

pedicel ascending to erect.

light to dark brown, globose, 3–5 mm;

pedicel spreading to ascending.

globose to obconic, lacking obvious depression, 0.5–1.2 mm, rugulose or occasionally granular.

globose to obconic, lacking obvious depression, 0.5–1 mm, granular to rugulose.

= 16, 32.

= 32.