Tropicos | Name - Saxifraga L.

Saxifraga L.

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Project Name Data (Last Modified On 6/2/2011)

Acceptance : Accepted

Project Data (Last Modified On 6/3/2011)

General/Distribution: A large genus comprising c. 370 species, throughout the N. hemisphere, in cool temperate and alpine regions. Many plants show xerophytic characters, like tufted growth or succulence. Represented in Pakistan by 19 species.

Comment/Acknowledgements: Species dubia

Saxifraga ramulosa Wall.ex DC.Prodr.4:21.1839; C.B. Clarke in. Hook.f.,Fl.Brit.Ind. 2:395.1878; Blatter, Beaut.Flow. Kashm. 1:123.1928; Stewart, Ann.Cat.Vasc.Pl.W.Pak. & Kashm.344.1972.

This species is included probably on the basis of a single specimen from Kashmir, Poosiana, Poonch, Clarke, 28473 (K), Stewart, l.c. We have no material of this species, and the gathering at K cited above does not match with S. Ramulosa

S. Ramulosa bears a close resemblance to S. pulvinaria in facies but can be distinguished by flower colour and the 3-5 leaf pits.

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1	Stolons present	(2)
+	Stolons absent	(4)

2 (1)	Basal leaves sessile, ciliate. Stem and pedicels not brown villous	(3)
+	Basal leaves petiolate, not ciliate. Stem and pedicels brown villous	Saxifraga hirculus

3 (2)	Leaves glandular-ciliate, apex not aristate	Saxifraga flagellaris
+	Leaves setose-ciliate, apex aristate	Saxifraga brunonis

4 (1)	Leaves with pits	(5)
+	Leaves without pits	(10)

5 (4)	Flowers 1(-2), inflorescence terminal	(7)
+	Flowers 3-5, inflorescence in corymbs	(6)

6 (5)	Flowers grey-purple. Peduncle 2.5 cm long. Styles divergent but recurved at the tip	Saxifraga afghanica
+	Flowers yellow. Peduncle 2.5-3.8 cm long. Styles divergent	Saxifraga meeboldii

7 (5)	Leaf pit 1	(8)
+	Leaf pits 3-7	(9)

8 (7)	Flowers red-pink or purplish, subsessile. Carpels almost free	Saxifraga oppositifolia
+	Flowers white, sessile. Carpels basally united	Saxifraga pulvinaria

9 (7)	Leaves ovate-obtuse. Flowers pale-rose. Filaments as long as the petals
+	Leaves linear-oblong. Flowers filac-purple. Filaments shorter than the petals

10 (4)	Bulbils present in leaf axils	(11)
+	Bulbils absent	(14)

11 (10)	All flowers normally developed	(12)
+	Only terminal flower developed, remainder represented by bulbils	Saxifraga cernua

12 (11)	Basal leaves reniform, margin lobed. Flowers white	(13)
+	Basal leaves not reniform, margin entire. Flowers yellow	Saxifraga filicaulis

13 (12)	Basal leaves petiole c. 10 cm. Leaf lobes 7-13
+	Basal leaf petiole 2.5-4 cm. Leaf lobes 5-7	Saxifraga sibirica

14 (10)	Plants caespitose. Leaves up to 10 mm long	(17)
+	Plants not caespitose. Leaves 1-5 cm long	(15)

15 (14)	Cauline leaves 4-12, amplexicaul. Sepals free. Flowers yellow	(16)
+	Cauline leaves 0-2, not amplexicaul. Sepals basally united. Flowers reddish

16 (15)	Basal leaves elliptic to lanceolate, acute; acute; leaf base attenuate	Saxifraga moorcroftiana
+	Basal leaves broadly ovate, obtuse; leaf base subcordate	Saxifraga parnassifolia

17 (14)	Petals 1½-2½ times the length of sepals	(18)
+	Petals equal to the length of sepals or lacking. Pedicel 6 mm long

18 (17)	Flowers white, pedicellate, campanulate. Leaves 5-10 mm long	Saxifraga androsacea
+	Flowers yellow, subsessile, campanulate. Leaves 4 mm long	Saxifraga jacquemontiana