Flora of North America species comparison

petiole 0.5–3 cm;

blade narrowly spatulate to obovate, (0.5–)1–5 × (0.1–)0.2–0.8(–1.2) cm.

petiole inconspicuous;

blade spatulate, (1–)2–5 × (0.2–)0.3–1.2(–2) cm.

bracts 3(–5), unilateral, spreading to nearly erect, connate for 1/2 their length, triangular to ovate or oblong, becoming acerose only at terminal nodes and then linear to linear-lanceolate, 0.5–1(–2) cm, apex acute to obtuse;

awns 1–2.5(–3) mm.

1–3, (2–)3(–4)-angled, obscurely ribbed and not corrugate, not ventricose, 2.5–5(–7) mm;

teeth (2–)3(–4), spreading to strongly divergent, glandular or slightly hirsute;

awns divergent, (0.5–)1–2.5(–3) mm.

1, 4-angled, distinctly ribbed and usually corrugate, often strongly ventricose, 3–5(–6) mm;

teeth 4, spreading to strongly divergent, glandular or strongly hirsute;

awns straight, (0.3–)0.5–1.2 mm.

1(–2);

perianth 1.5–2.5(–3) mm, pubescent at least near base abaxially;

tepals oblong, entire apically;

stamens 6–9;

filaments 1–2(–2.5) mm;

anthers 0.5–0.7 mm.

1;

perianth 1.5–3(–3.5) mm, pubescent abaxially;

tepals narrowly oblanceolate, erose or fimbriate apically, infrequently entire or 2-lobed;

stamens 9;

filaments 1–2.5(–3) mm;

anthers 0.5–0.8(–0.9) mm.

2–3 mm.

2–3 mm.

-escences: bracts 3, spreading to nearly erect, perfoliate, becoming 1-sided and weakly perfoliate apically, connate for nearly their entire length, orbiculate, 0.5–1(–2) cm, apex acute to obtuse;

awns 0.3–1.2(–1.5) mm.

= 38.

= 38, 40.