Jepson eFlora
Key to families | Table of families and genera

Key to Saxifragaceae

View taxon page for Saxifragaceae

Jepson Manual glossary definitions can be seen by moving your cursor over words underlined with dots.

1. Flower inconspicuous; sepals 4; petals 0; stamens 8 ..... CHRYSOSPLENIUM

1' Flower ± conspicuous; sepals 5; petals generally 5 (rarely 0, 2, or 4); stamens generally 5 or 10 (rarely 3)

2. Flower slightly to strongly bilateral

3. Stamens 3; petals 4; hypanthium open on lower side ..... TOLMIEA

3' Stamens 5, petals 0, 2, or 5; hypanthium open or closed on lower side

4. Petals 2 (alternate upper sepals), recurved; hypanthium open on lower side, ± free from ovary ..... BENSONIELLA

4' Petals 0 or 5, not recurved; hypanthium closed on lower side, partly fused to ovary

5. Inflorescence bulblets 0; petals 0 or not spotted ..... HEUCHERA (2)

5' Proximal flowers replaced by bulblets; some petals ± 2-spotted ..... MICRANTHES (3)

2' Flower ± radial

6. Stamens 5

7. Ovary superiorpetals triangular, long-tapered; caudex with bulblets ..... BOLANDRA

7' Ovary generally > 1/2-inferior, at least in flower

8. Leaves basal and cauline; ovary chambers 2, placentas 2, axile

9. Leaf blade lobed < 3/4 to base, largest generally >> 4 cm wide; flowers > 15; inflorescence ± flat-topped or ± tapered to tip, branches generally > 3, with flowers generally on 1 side ..... BOYKINIA

9' Leaf blade lobed nearly to base, largest 1–4 cm wide; flowers < 15; inflorescence ± flat-topped, branches generally < 3, with flowers on all sides ..... HEMIEVA

8' Leaves generally basal (at most 3 cauline and reduced); ovary chamber 1, placentas 2, parietal

10. Inflorescence a panicle; petals ± entire ..... HEUCHERA (2)

10' Inflorescence a raceme (spike); petals lobed

11. Petals generally 3-lobed at tip, lobes narrowly triangular to elliptic; hypanthium widely obconic to bell-shaped ..... OZOMELIS

11' Petals pinnately lobed, lobes 4–10, linear; hypanthium saucer-shaped

12. Cauline leaves 1–3; inflorescence blooming from tip to base; filaments >> anthers, ± 2/3 sepal ..... MITELLASTRA

12' Cauline leaves 0 (occasionally 1); inflorescence blooming from base to tip; filaments (short) < anthers ..... PECTIANTIA

6' Stamens 10

13. Inflorescence appearing before leaves

14. Leaves peltate, generally > 1 dm wide; inflorescence 7–20 dm; flower not heterostylous ..... DARMERA

14' Leaves not peltate, << 1 dm wide; inflorescence < 3 dm; flower heterostylous ..... JEPSONIA

13' Inflorescence not appearing before leaves

15. Pistils 2; fruit follicle ..... MICRANTHES (3)

15' Pistil 1; fruit capsule

16. Ovary chamber 1, placentas parietal

17. Styles 3 ..... LITHOPHRAGMA

17' Styles 2

18. Inflorescence a spike-like raceme; fruit valves equal, narrow; petal lobes ± 5–7, linear ..... TELLIMA

18' Inflorescence a raceme-like panicle; fruit valves unequal, wide; petal lobes 0 ..... TIARELLA

16' Ovary chambers 2, placentas ± axile (rarely distally marginal in ovary lobes)

19. Leaf blade jointed to petiole and falling before it; styles generally fused at base, at least in flower ..... SAXIFRAGOPSIS

19' Leaf blade not jointed to petiole nor falling before it; styles free throughout

20. Cauline leaves 0 (if present, then all leaves entire); leaves not lobed ..... MICRANTHES (3)

20' Cauline leaves present, sometimes strongly reduced; some leaves lobed

21. Stems trailing; basal leaves 0; cauline leaves evenly spaced along stem; seeds spiny ..... CASCADIA

21' Stems erect or trailing; basal leaves present or if 0, then cauline leaves mostly near base; seeds finely papillate ..... SAXIFRAGA

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Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Citation for an individual treatment: [Author of taxon treatment] [year]. [Taxon name] in Jepson Flora Project (eds.) Jepson eFlora, [URL for treatment]. Accessed on [month, day, year].
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