1	Calyx with appendages		(2)
+	Calyx without appendages		(5)
2 (1)	Style as long or shorter than corolla		(3)
+	Style exserted beyond the lobes of the corolla		(4)
3 (2)	Plants sparsely hairy. Corolla campanulate, glabrous		1 Campanula staintonii
+	Plants hirsute. Corolla tubular, hairy outside		2 Campanula leucantha
4 (2)	Plants up to 40 cm tall, not caespitose. Stems glabrous to slightly hirsute, white		3 Campanula leucoclada
+	Plants c. 10 cm tall, caespitose. Stems hirsute, not white		4 Campanula polyclada
5 (1)	Cauline leaves linear, 1 -5 cm long		(6)
+	Leaves lanceolate to ovate or oval, 5 mm to 12 cm long		(8)
6 (5)	Radical leaves spathulate, cauline linear. Flower single, terminal. Capsule dehiscence towards the top		5 Campanula aristata
+	All leaves linear. Inflorescence a branched raceme. Capsule dehiscence towards the base		(7)
7 (6)	Plants pubescent. Flowers c. 1.3 cm long. Calyx segments c. 5 mm long, not split to the base. Ribs of the sepals not prominent at the base		6 Campanula sylvatica
+	Plants almost glabrous. Flowers c. 2 cm long, Calyx segments c. 1 cm long, split almost to the base. Ribs of the sepals swollen at the base		7 Campanula sulaimanii
8 (5)	Plants erect, densely hirsute. Flowers in clustered branched racemes		8 Campanula benthamii
+	Plants erect or not, glabrous, hirsute, strigose or pubescent. Flowers in lax racemes, not in clusters		(9)
9 (8)	Plants hirsute to strigose or hoary pubescent. Flowers small, less than 1 cm long		(10)
+	Plants glabrous to hirsute or pubescent. Flowers up to 5 cm long		(12)
10 (9)	Leaves narrow lanceolate, 5-15 mm long. Flowers numerous at tips of branches, 5-8 mm long. Capsule narrowed at the base		10 Campanula tenuissima
+	Leaves ovate to oblong, 5-50 mm long, hirsute to densely white pubescent. Flowers 3-5 mm long. Capsule rounded at the base		(11)
11 (10)	Plants erect. Leaves 15-30 mm, hirsute, Flowers 3-5 mm long		11 Campanula tristis
+	Plants procumbent. Leaves 5-10 mm, densely white pubescent, margin crenate. Flowers c.5 mm long		13 Campanula argyrotricha
12 (9)	Plants erect; up to 1 m tall. Stem glabrous Flowers up to 5 cm long		9 Campanula latifolia
+	Plants erect, less than 1 m tall or procumbent to straggling; hirsute or densely white hoary pubescent		(13)
13 (12)	Plants densely hoary, tomentose. Flowers up to 2 cm long		12 Campanula cashmeriana
+	Plants hirsute. Flowers up to 1 cm long		(14)
14 (13)	Plants procumbent. Flowers up to 3 mm long. Petals absent. Calyx teeth minute		14 Campanula alsinoides
+	Plants erect to procumbent. Flowers 1 cm long. Corolla campanulate. Calyx teeth prominent		15 Campanula pallida