1	Plant evergreen; inflorescence compound-corymbose; rachis and pedicels without lenticels in fruit.		(2)
+	Plant deciduous, very rarely evergreen; inflorescence umbellate, corymbose, or compound-corymbose; rachis and pedicels with prominent lenticels in fruit.		(23)
2 (1)	Leaves entire, rarely with few inconspicuous teeth.		(3)
+	Leaves wholly or partly serrate.		(6)
3 (2)	Inflorescences glabrous, rarely slightly pilose; leaves leathery, not revolute, both surfaces glabrous.		1 P. integrifolia
+	Inflorescences densely tomentose; leaves thickly leathery, slightly revolute, adaxially glabrous, abaxially densely tomentose.		(4)
4 (3)	Petiole 20–30 mm; lateral veins 20–25 pairs.		4 P. megaphylla
+	Petiole 1.5–5 mm; lateral veins 13–17 pairs.		(5)
5 (4)	Hypanthium campanulate, abaxially glabrous.		2 P. crassifolia
+	Hypanthium cylindric, abaxially tomentose.		3 P. tushanensis
6 (2)	Leaf blade abaxially with black glands.		(7)
+	Leaf blade abaxially without black glands.		(8)
7 (6)	Inflorescence branches and hypanthium abaxially villous; petiole 10–25(–30) mm, glandular and toothed.		21 P. prunifolia
+	Inflorescence branches and hypanthium abaxially gray tomentose; petiole 8–15 mm, without glands and teeth.		22 P. raupingensis
8 (6)	Inflorescence branches glabrous or pilose.		(9)
+	Inflorescence branches usually tomentose.		(13)
9 (8)	Inflorescences pilose.		9 P. bodinieri
+	Inflorescences glabrous.		(10)
10 (9)	Petiole usually 2–4 cm.		5 P. serratifolia
+	Petiole usually 0.4–1.5 cm.		(11)
11 (10)	Petiole 10–15 mm; leaf blade elliptic, oblong, or oblong-obovate, apex acuminate.		6 P. glabra
+	Petiole 4–10 mm; leaf blade oblong-lanceolate, lorate-lanceolate, or oblanceolate, apex acute or obtuse.		(12)
12 (11)	Leaf blade oblong-lanceolate or lorate-lanceolate, margin crenate, veins 18–20 pairs.		7 P. stenophyllus
+	Leaf blade oblanceolate, margin sharply serrate, veins 9–13 pairs.		8 P. lochengensis
13 (8)	Leaf margin spiny-serrate.		(14)
+	Leaf margin sharply serrate or obtusely serrate.		(15)
14 (13)	Branchlets, petioles, and inflorescences tomentose; leaf blade 4.5–7 × 4–5 cm.		19 P. prionophylla
+	Branchlets, petioles, and inflorescences villous; leaf blade 2–5 × 1–2 cm.		20 P. berberidifolia
15 (13)	Leaf blade abaxially glabrous.		(16)
+	Leaf blade abaxially pubescent or tomentose.		(17)
16 (15)	Leaf blade oblong, elliptic, or oblong-obovate, apex acute, veins 12–14 pairs.		10 P. beckii
+	Leaf blade obovate or oblanceolate, apex obtuse, veins 9–11 pairs.		11 P. lasiogyna
17 (15)	Leaf blade abaxially pilose.		(18)
+	Leaf blade abaxially tomentose.		(20)
18 (17)	Inflorescences gray lanuginose, leaf veins 18–20 pairs; petiole 2.5–4 cm.		14 P. lanuginosa
+	Inflorescences villous; leaf veins 12–15 or 20 pairs; petiole 0.6–2(–2.5) cm.		(19)
19 (18)	Leaf margin serrate at least in part, leaf blade oblong-elliptic to obovate-oblong, veins ca. 20 pairs, petiole 0.6–1.2 cm.		12 P. chingiana
+	Leaf margin wholly serrate, leaf blade oblong-ovate, oblong-obovate, or oblong-lanceolate, veins 12–15 pairs, petiole 1–2(–2.5) cm.		13 P. kwangsiensis
20 (17)	Petiole 2–4 cm; hypanthium abaxially tomentose.		15 P. glomerata
+	Petiole usually less than 2 cm; hypanthium abaxially glabrous or tomentose.		(21)
21 (20)	Hypanthium glabrous abaxially; leaf veins 30–40 pairs.		16 P. anlungensis
+	Hypanthium tomentose abaxially; leaf veins 10–20 pairs.		(22)
22 (21)	Leaf blade oblong-lanceolate or oblanceolate, abaxially gray tomentose when young, glabrescent, apex acute or shortly acuminate, margin sparsely minutely sharply serrate, veins 12–15 pairs.		17 P. chihsiniana
+	Leaf blade lorate-oblong or narrowly lanceolate, abaxially densely and persistently yellow tomentose, apex obtuse or acute, margin with sparse, sharp or spiny teeth, veins 10–20 pairs.		18 P. loriformis
23 (1)	Inflorescence umbel or corymb 2–9-flowered, sometimes flowers solitary, rarely more than 9.		(24)
+	Inflorescence corymb or compound corymb usually more than 10-flowered.		(28)
24 (23)	Branchlet, petiole, pedicel, and hypanthium abaxially densely pubescent.		(25)
+	Branchlet, petiole, pedicel, and hypanthium abaxially glabrous.		(26)
25 (24)	Deciduous shrub; flowers 3–8 in umbels or corymbs; pedicel 3–10 mm; leaf apically acuminate to caudate.		42 P. hirsuta
+	Evergreen shrub; flowers 1 or 2, or 3–6 in umbels or corymbs; pedicel 10–20 mm; leaf apically acute to shortly acuminate.		43 P. zhejiangensis
26 (24)	Flowers several to more than 10 in umbels or corymbs; pedicel 1–2.5(–3.2) cm; petals villous adaxially.		39 P. parvifolia
+	Flowers solitary or 2- or 3(–5)-fascicled; pedicel 2–5 cm; petals glabrous.		(27)
27 (26)	Shrub 2(–5) m tall, erect; pedicel often 3–5 cm, glabrous; sepals not toothed; petals white or stained yellow.		40 P. komarovii
+	Shrub smaller, decumbent; pedicel 0.5–1.8 cm, sparsely villous when young, glabrous when old; sepals irregularly minutely toothed; petals white.		41 P. chingshuiensis
28 (23)	Inflorescence pubescent or tomentose.		(29)
+	Inflorescence glabrous.		(35)
29 (28)	Peduncle and pedicels verticillate.		32 P. benthamiana
+	Peduncle and pedicels alternate.		(30)
30 (29)	Leaf blade glabrous or pilose abaxially.		(31)
+	Leaf blade abaxially tomentose.		(33)
31 (30)	Leaf blade abaxially glabrous, apex acuminate, margin sharply serrate, veins 9 or 10 pairs.		33 P. pilosicalyx
+	Leaf blade abaxially pilose, apex caudate or acute to shortly acuminate, margin sharply or shallowly serrate, veins 5–10(–12) pairs.		(32)
32 (31)	Leaf apically caudate, margin densely sharply serrate apically, veins 5–7 pairs.		34 P. villosa
+	Leaf apically acute to shortly acuminate, margin sparsely shallowly serrate, veins 8–10(–12) pairs.		35 P. calleryana
33 (30)	Leaf margin sparsely serrate or subentire, leaf blade lanceolate or lorate-lanceolate, abaxially densely gray tomentose when young, subglabrous when old.		38 P. podocarpifolia
+	Leaf margin sharply serrate along entire length, leaf blade oblong to oblong-lanceolate or lanceolate, abaxially yellowish gray or long gray tomentose at least initially.		(34)
34 (33)	Leaf blade oblong or oblong-elliptic to oblong-lanceolate, abaxially persistently yellowish gray tomentose, lateral veins 10–15 pairs; rachis, pedicels, and hypanthium abaxially sparsely villous, usually glabrate.		36 P. schneideriana
+	Leaf blade lanceolate, abaxially initially long gray tomentose, glabrescent, lateral veins 8–10 pairs; rachis, pedicels, and hypanthium abaxially densely long gray tomentose.		37 P. arguta
35 (28)	Leaf blade abaxially tomentose.		(36)
+	Leaf blade abaxially glabrous, rarely puberulous only along veins.		(37)
36 (35)	Leaf blade 4–8.5 × 1–2 cm, abaxially floccose-tomentose, margin densely minutely serrate, apex acuminate, veins conspicuous, 8–11 pairs.		30 P. tsaii
+	Leaf blade 3–4 × 0.8–1 cm, abaxially densely yellow tomentose, margin entire or inconspicuously crenulate, apex ± obtuse or ± acute, veins inconspicuous.		31 P. blinii
37 (35)	Leaf veins adaxially deeply impressed.		29 P. impressivena
+	Leaf veins adaxially slightly impressed.		(38)
38 (37)	Leaf apically acute, rarely shortly acuminate.		(39)
+	Leaf apically acuminate to caudate.		(40)
39 (38)	Leaf basally symmetrical, leaf blade broadly lanceolate, both surfaces glabrous, veins not oblique, petiole 5–7 mm; fruit obovoid, 6–7 mm in diam.		27 P. bergerae
+	Leaf basally unsymmetrical, leaf blade oblong or oblanceolate, abaxially villous along midvein, veins very oblique, petiole 7–10 mm; fruit ovoid to ellipsoid, 3–4 mm in diam.		28 P. obliqua
40 (38)	Leaf margin densely minutely sharply serrate, veins 7–9 pairs.		26 P. fokienensis
+	Leaf margin sparsely serrate, veins 6–16 pairs.		(41)
41 (40)	Leaf blade lanceolate or oblong-lanceolate, margin revolute, shallowly sharply serrate, sometime subentire, lateral veins 12–16 pairs; fruiting pedicel 5–9 mm.		25 P. callosa
+	Leaf blade elliptic, oblong, obovate-oblong, ovate-lanceolate, or obovate-lanceolate, margin not revolute, sharply serrate, lateral veins 6–14 pairs; fruiting pedicel 1–2.5 cm.		(42)
42 (41)	Leaf blade adaxially glabrous, sparsely pilose along veins abaxially, veins 9–14 pairs; fruit ovoid or subglobose; fruiting pedicel 1–2 cm.		23 P. beauverdiana
+	Leaf blade glabrous on both surfaces, veins 6–8 pairs; fruit obovoid or obovoid-ellipsoid; fruiting pedicel 1.5–2.5 cm.		24 P. lucida