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FOC | Family List | FOC Vol. 8 | Saxifragaceae | Saxifraga

2. Saxifraga sect. Irregulares Haworth, Misc. Nat. 158. 1803.

石荷叶组 shi he ye zu

Diptera Borkhausen.

Herbs perennial, forming erect individuals, lacking basal bulbils. Leaves alternate, all basal, petiolate; leaf blade herbaceous or leathery, lacking chalk glands, margin lobed; foliar crystals present mainly as druses. Flowering stem usually scapose; inflorescence cymose. Flowers bisexual, zygomorphic, 5-merous. Petals white or pink, not callose. Filaments clavate; pollen 2-nucleate, exine tectum smooth. Carpels connate at least proximally, dehiscing distally in fruit. Ovary superior. Integuments 2.

About ten species: China, Japan; seven species (four endemic) in China.

1 Stolons arising from axils of basal leaves, filiform   20 S. stolonifera
+ Stolons absent.   (2)
2 (1) Leaf blade peltate or ovate to broadly so, or elliptic to oblong, abaxially sometimes brown spotted.   (3)
+ Leaf blade reniform to orbicular, abaxially usually concolorous.   (4)
3 (2) Leaf blade peltate or ovate to broadly so, abaxially brown spotted   18 S. mengtzeana
+ Leaf blade elliptic to oblong   14 S. kwangsiensis
4 (2) Leaf blade with foliar embryos in sinus adaxially   19 S. epiphylla
+ Leaf blade without foliar embryos.   (5)
5 (4) Longest petal serrate at margin   17 S. fortunei
+ Longest petal entire at margin.   (6)
6 (5) Flowering stem and inflorescence reddish long glandular villous   15 S. rufescens
+ Flowering stem and inflorescence shortly glandular pubescent   16 S. imparilis

Lower Taxa


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