Saxifraga sect. Ciliatae in Flora of China @ efloras.org

4. Saxifraga sect. Ciliatae Haworth, Misc. Nat. 160. 1803.

山羊臭组 shan yang xiu zu

Hirculus Haworth.

Herbs mostly perennial, some possibly annual, biennial, or monocarpic perennial (suspected rather than demonstrated), forming erect individuals, cespitose clumps, cushions, or sprawling mats, lacking basal bulbils. Leaves alternate, very rarely opposite, petiolate or not; leaf blade herbaceous or carnose, lacking chalk glands and crystals, margin usually entire, occasionally toothed or lobed. Flowering stem usually leafy; inflorescence cymose or flower solitary. Flowers sometimes unisexual, actinomorphic, 5-merous. Petals usually yellow or orange, occasionally white, pink, or red, sometimes spotted orange, red, or purple, very often with callosities. Filaments subulate to linear; pollen 3-nucleate, exine tectum finely striate. Carpels connate for most of placental region, dehiscing distally in fruit; ovary subsuperior to subinferior. Integuments 2.

About 175 species: Asia, Europe, North America, mainly in arctic and montane regions; 166 species (112 endemic) in China.

Key 1

1 Petals shorter than or only slightly exceeding sepals. (2)

+ Petals at least 1.5 × as long as sepals. (7)

2 (1) Basal leaves glabrous adaxially. (3)

+ Basal leaves glandular pubescent adaxially. (4)

3 (2) Stolons arising from axils of basal leaves; glands on cauline leaves with clavate heads 185 S. consanguinea

+ Stolons arising from axils of median leaves; glands on cauline leaves with globose heads 184 S. tentaculata

4 (2) Cauline leaves to 2 mm wide 187 S. angustata

+ Cauline leaves more than 2 mm wide. (5)

5 (4) Petals not overlapping, to 1.5 mm wide 186 S. microgyna

+ Petals overlapping, more than 2 mm wide. (6)

6 (5) Sepal veins confluent into a verruca at apex 182 S. deqenensis

+ Sepal veins not confluent at apex 183 S. nangxianensis

7 (1) Median leaves forming a rosette with stolons arising from axils 181 S. flaccida

+ Basal leaves forming a rosette with stolons arising from axils. (8)

8 (7) Pedicels at least 3 × as long as cauline leaves; cyme lax, many flowered. (9)

+ Pedicels mostly less than 2 × as long as cauline leaves; cyme corymbose, compact, or flower solitary. (10)

9 (8) Capsule subglobose; petals at least 3 mm wide; sepals spreading 178 S. brunonis

+ Capsule narrowly ovoid; petals less than 2.5 mm wide; sepals spreading to reflexed 179 S. josephii

10 (8) Margin of basal leaves coarsely eglandular setose-ciliate, longest bristles 0.5-1 mm. (11)

+ Margin of basal leaves slender ciliate, often glandular, longest hairs less than 0.5 mm. (12)

11 (10) Inflorescence not clearly umbellate, 2-5-flowered or flower solitary; stolons slender; cauline leaves shorter than or equaling basal leaves 176 S. mucronulata

+ Inflorescence umbellate, more than 5-flowered; stolons robust; cauline leaves equaling or longer than basal leaves 177 S. mucronulatoides

12 (10) Cauline leaves ca. 4 × as long as internodes, both surfaces glabrous 180 S. loripes

+ Cauline leaves up to 2 × as long as internodes, both surfaces glandular pubescent. (13)

13 (12) Stem usually more than 5 cm tall; petals more than 8 mm; ovary superior 174 S. stenophylla

+ Stem usually less than 5 cm tall; petals less than 8 mm; ovary semi-inferior 175 S. parkaensis

List of Keys

List of lower taxa