leaf margin

The very distinctive leaf margin makes this species easy to recognize, in contrast to the varieties that have been proposed within it.

Leaves with a pair of glands at junction of leaf base and petiole apex, these much larger than any elsewhere along leaf margin.

Leaf margin serrulate or inconspicuously undulate, petiole and veins on abaxial leaf surface sparsely puberulent.

Leaves clustered toward branch tips, usually spirally arranged; leaf margin entire; petiole apex without glands.

Plants found at higher elevations are shorter, often unbranched, have a less serrate leaf margin, and a shorter peduncle.

Description: Herbaceous vines, glabrous except for pubescent on stem nodes, petioles , and leaf margin.

Leaf margin irregularly sharply dentate to double dentate; calyx sparsely stellate pilose.

This species shows great variability in stem branching, leaf shape, leaf margin, and peduncle length.

Branchlets unarmed or with sparse, minute prickles; leaf margin undulate or inconspicuously lobed, lobes obtuse, rarely acute.

Leaf margin villous, hairs caducous, entire; calyx lobes oblong; corolla white, or tinged pale red.

Leaf margin crenate-serrate, petiole and veins on abaxial leaf surface densely pubescent.

Leaf margin serrulate, leaf blade scabrous; capsule spines branched, soft.

Leaf margin coarsely dentate or sharply serrate; female perianth lobes connate at base only.

Leaf margin entire near base, otherwise obtusely denticulate; calyx densely stellate pubescent.

Petiole glabrous, leaf margin deeply serrate, teeth extending into awns.

Leaf margin irregularly toothed, usually with large, elliptic, triangular, or narrowly triangular teeth (to 1 cm).

Leaf margin usually 10- or more lobed, lobe margin doubly serrulate; inflorescences with many long branches.

Leaf margin incised-serrate; peduncle and pedicels tomentose.

Branchlets and petioles glabrous, inflorescence hairy when immature; leaf margin not reflexed, abaxially glabrous.

Branchlets and petioles densely, snow white tomentose; leaf margin crenulate.

leaf margin irregularly or coarsely serrate.

The middle of their green leaf, red leaf margin, it is "green red rimmed" known.

Stipules lanceolate, 2-3 mm wide, pubescent, erect, soon caducous; leaf margin repand or coarsely serrate.

Branches without protuberances or warts; inflorescences often more than 5 cm; leaf margin sinuate-dentate, secondary veins in 5-8 pairs.

It is variable in its leaf margin: populations in Hubei, Shaanxi, and Sichuan have more palmately 3-partite or 3-lobed leaf blades.

Leaf margin irregularly crenate, adaxially densely tomentose; pedicel 1-2 cm; corolla uniformly orange.

Leaf margin sometimes with gland-tipped teeth, apex acute, rarely acuminate; petiole 6-7 mm.

This is a common species that can be easily identified by its sharp and double-serrulate leaf margin.

Leaf margin serrate apically, entire basally, abaxially pubescent only along midvein when young; peduncle and pedicels glabrous.

Leaf margin sparsely and minutely dentate, base acute; prickles on capsule 5-7 mm.

Plants strong, stems robust; leaf margin 16-25-toothed on each side.

Stipules ca. 2 mm; leaf margin incised-serrulate; achene ca. 1 mm.

2 (1) Leaf margin entire, blade usually ovate.

2 (1) Leaf margin entire; persistent style very short in fruit state, ca. 2 mm.

Leaf margin entire or subentire, apex rounded; calyx ca. 0. 7 cm.

hydathodes set in leaf margin, equidistant between abaxial and adaxial surfaces, not secreting chalk;

leaf margin weakly serrate to sinuate-pinnatifid, often with large terminal lobe;

Flowers solitary; leaf margin entire or denticulate with small glands;

secondary veins 8-10 pairs, broadly spreading, anastomosing regularly near leaf margin;

secondary veins 13-16 pairs, raised on both surfaces, slender, oblique and connected at leaf margin;

secondary veins many, dense, 30-36 pairs, oblique, joining at leaf margin;

secondary veins 10-15 pairs, slender, joining near leaf margin;

leaf margin entire to subentire;