Flora of North America species comparison

produced in 1 pseudowhorl at end of annual growth;

gemmae 4–4.5 × 3.5–4 mm;

lateral leaves broadly obtuse, widest above middle, 1.25–1.5 mm wide.

produced in 2–3 pseudowhorls at end of annual growth;

gemmae 3.5–5 × 3–4 mm, lateral leaves 1.25–1.75 mm wide, acute with acuminate tip.

erect, indeterminate, 12–20 cm, becoming long-decumbent, 4–20 cm;

leaves in mature portion slightly smaller than in juvenile portion; distinct annual constrictions present;

juvenile growth erect.

erect, determinate, 12–18(–25) cm, clustered to long-decumbent, to 8 cm;

leaves in mature portion smaller than leaves in juvenile portion;

annual constrictions absent;

juvenile growth sharply down-curled forming ± 1/2 circle, leaves at tip appressed to form pointed apex.

reflexed (juvenile portion) or spreading to reflexed (mature portion), light green to whitish green, lustrous;

largest leaves oblanceolate, broadest at 1/2–3/4 length, 6–10 mm;

smallest leaves narrowly triangular, broadest at base, 4–7 mm;

margins with small papillae;

stomates present on both surfaces, numerous (36–80 per 1/2 leaf) on adaxial surface.

in juvenile (proximal) portion spreading-reflexed (shade) to appressed-ascending (sun), in mature (distal) portion spreading-ascending (shade) to appressed-ascending (sun), light green to yellow, lustrous;

leaves in juvenile portion narrowly lanceolate, parallel-sided, 4.5–7 mm;

leaves in mature portion triangular, widest at base, 3.5–5.5 mm;

margins entire;

stomates present on both surfaces, numerous, 35–80 per 1/2 leaf on adaxial surface.

30–38 µm.

25–34 µm.