10f), with a cordate to cuneate
base and cordate apex, sometimes with style base persisting.
7 mm, ascending, entire to sparsely ciliate at the base, castaneous, point of attachment blackish; other scales stellate to amorphous; blades oblong-lanceolate, subchartaceous, base long cuneate
(decurrent), apex acute to cuneate
, margins glabrous, 8-16 x 0.
5 cm wide, 30-35 cm long, papyraceous, sessile, cuneate
0 mm long, oblanceolate to obovate or flabellate, with cuneate
bases, and rounded to lobed apices (Fig.
When, for a comprehensive survey of the distribution of monocotyledon sieve-element plastids (Behnke, 2000), the number of investigated species was raised to (now) more than 750, representing all families and most of its segregates, some were found to contain 1) polygonal, orthogonal, or other crystals in addition to cuneate
crystals and/or 2) less-distinct, angular crystals instead of the cuneate
2 cm, elliptic, basally cuneate
, apically acuminate; costa stramineous, scaly abaxially, the scales 2-4 x 0.
emeiensis Habitat wet forest floors Altitude 500-1800 m Rhizomes long-creeping Scales brown, ovate-lanceolate Frond texture lightly coriaceus at dry Frond length 24-28 cm Frond shape broadly oblong-lanceolate, 6-7 cm wide, widest at base Frond base obliquely cuneate
Frond color yellow-green at dry Lateral veins mostly flat, visible, free Sori round, larger, borne in 1-2 rows between the lateral main veins Character N.
7 cm, oblong-attenuate, stalked 2-5 mm, lightly oblique, with a terminal conform, biggest pinnule; pinnules alternate, oblique, articulate, stalked 13 mm, the black color of the stalk suddenly stopping at the pinnule base, leaving a discoid black joint when it falls off, the sterile ones larger, the base cuneate
, distally rounded or with the apex and lobules blunt, the outer margins crenate and dentate to lobulate, the fertile ones contracted, saggitate, the apex and lobules acute, lobulate, dentate toward the lobules apex; pinnules of the first order 2-7 pairs, 0.
5 mm wide; pinnae 1-11 cm long, less than I cm wide, flabellate to linear-lanceate, subfalcate, 2-5 pairs, the bases cuneate
, non-auriculate, apices obtuse to long-attenuate, margins dentate; veins mostly simple except for the proximal ones, which are forked, readily visible on both sides, vein ends expanded adaxially.
3 cm, linear to narrowly elliptic, the bases cuneate
, the apices acute, 1-pinnatisect throughout, with 10-20 pairs of segments; segments oblong, fully adnate, the bases slightly decurrent, the apices rounded, the costae not visible (Figs.
Laminae firm-chartaceous, to 120-75 x 18-35 mm (2/3 to 4/5 of frond length), narrow-elliptic to elliptic (widest in the middle), rarely obovate (widest above the middle), cuneate
or somewhat tapering at bases, acute to attenuate at tips (Fig.
Rhizomes light brown, rugose, somewhat glaucous by the whitish wax-like deposits; rhizome scales roundish, clathrate, dark brown, not shiny, margins with small glands and slightly lacerate, very distant and not covering the rhizome surfaces; laminae entire, chartaceous, lanceolate, with cuneate
base, glaucous on the abaxial surfaces; costae abaxially glabrous or only with scales, the scales roundish to ovate, dark brown to reddish brown; secondary veins raised on the abaxial surfaces, wider than the tertiary ones; margins of the laminae cartilaginous; sori in 2-3(-4) rows between the costae and laminae margins.