Directory       News       Site Map       Home
         
    Jepson eFlora


Citation for the whole project: Jepson Flora Project (eds.) [year] Jepson eFlora, http://ucjeps.berkeley.edu/IJM.html [accessed on month, day, year]
Key to groups

Family key to Group 18

Group 18: Perianth in 2 whorls; petals 4 or more, all fused, corolla bilateral; pistil 1, ovary superior

1. Stamens > in number than corolla lobes

2. Leaf compound — petals proximally free but strongly adherent and may appear fused ..... FABACEAE (Papilionoideae)

2' Leaf simple, sometimes reduced to linear or scale-like bracts

3. Filaments fused, forming a U-shaped tube around the style — petals actually free but may appear fused ..... POLYGALACEAE {G15,22,23,24}

3' Filaments free

4. Shrub; leaves alternate; anthers dehiscing by pores; ovules many; fruit a capsule ..... ERICACEAE (Rhododendron macrophyllum)

4' Herb or weak-stemmed subshrub; leaves opposite; anthers dehiscing by lateral slits; ovule 1; fruit an achene tightly enwrapped by hardened base of corolla-like calyx — petals actually 0 but sepals petal-like and involucre bracts sepal-like ..... NYCTAGINACEAE (Allionia)

1' Stamens = in number to corolla lobes or fewer

5. Corolla scarious, persistent in fruit ..... PLANTAGINACEAE (Plantago) {G5,8,19}

5' Corolla not scarious, generally deciduous after flower

6. Fertile stamens = in number to corolla lobes

7. Ovary deeply 4-lobed, especially in fruit; style attachment surrounded by lobes of ovary (style readily detaches in Lamiaceae as corolla falls); fruit breaking apart into 1-seeded nutlets (sometimes only 1–3 nutlets maturing)

8. Stem round in ×-section; leaves alternate (proximal opposite in some Plagiobothrys); herbage not aromatic; inflorescence or inflorescence branches coiled when young, unrolling in flower or fruit ..... BORAGINACEAE {G19}

8' Stem 4-angled, at least when young; leaves opposite throughout; herbage generally strongly aromatic, especially if crushed; inflorescence or inflorescence branches not coiled ..... LAMIACEAE (3) {G8,19}

7' Ovary entire or shallowly lobed; style clearly attached to tip of ovary; fruit a capsule or splitting into nutlets

9. Shrub; filaments attached directly to receptacle, falling free from corolla or only weakly adhering; anthers dehiscent by pores ..... ERICACEAE {G17,19,24}

9' Herb; filaments fused to and falling with corolla; anthers dehiscent by slits

10. Calyx lobes bordered by or ± fused by a much thinner, transparent or translucent membrane; corolla generally funnel-shaped to salverform; stigmas 3; ovary chambers 3 ..... POLEMONIACEAE {G19}

10' Calyx lobes not bordered by or fused by transparent or translucent membrane; corolla ± rotate; stigmas 1–2; ovary chambers 1–4

11. Corolla white to blue or purple, 2–8 mm diam; inflorescence cyme-like, or flowers solitary; fruit splitting into generally 4 one-seeded nutlets ..... BORAGINACEAE (Tiquilia) {G19}

11' Corolla yellow (white to ± purple), 15–40 mm diam; inflorescence a narrow raceme or panicle; fruit a many-seeded capsule ..... SCROPHULARIACEAE (Verbascum) {G19}

6' Fertile stamens fewer than corolla lobes — 1 or more sterile stamens sometimes present

12. Plant entirely non-green, ± fleshy ..... OROBANCHACEAE (2)

12' Plant green and photosynthetic

13. Proximal portion of lower corolla lip with backward-projecting, conic or tubular spur

14. Plant aquatic; leaf-like underwater stems generally dissected, generally submersed, generally bearing small, hollow bladders that suck in and trap small organisms when hairs at opening are triggered ..... LENTIBULARIACEAE (Utricularia) {G2}

14' Plant terrestrial; leaves entire to shallowly lobed, without hollow bladders

15. Leaves all basal; adaxial leaf face sticky or slimy with insect-capturing glands ..... LENTIBULARIACEAE (Pinguicula)

15' Leaves basal and cauline or all cauline; adaxial leaf surface not sticky or slimy with insect-capturing glands ..... PLANTAGINACEAE (4) {G5,19}

13' Proximal portion of lower corolla lip without backward-projecting, conic or tubular spur, occasionally with expanded pouch

16. Ovary generally deeply 4-lobed; style attachment surrounded by lobes of ovary [style readily detaches as corolla falls] — fruit breaking into 4 one-seeded nutlets ..... LAMIACEAE (3) {G8,19}

16' Ovary entire or ± shallowly lobed; style arising from tip of ovary

17. Ovules 1–4 per ovary chamber

18. Fruit a capsule

19. Shrub ..... ACANTHACEAE

19' Annual ..... PLANTAGINACEAE (4) {G5,19}

18' Fruit 2–4 nutlets

20. Stamens exserted ..... LAMIACEAE (3) {G8,19}

20' Stamens included ..... VERBENACEAE {G19}

17' Ovules several to many per ovary chamber

21. Leaves compound ..... BIGNONIACEAE (2)

21' Leaves simple

22. Capsule 5–35 cm

23. Shrub or tree; capsule body 15–35 cm, straight, linear ..... BIGNONIACEAE (2)

23' Annual; capsule body 5–10 cm, curved, tipped with a hooked beak several cm long ..... MARTYNIACEAE

22' Capsule < 2 cm

24. Corolla upper lip forming a concave beak or hood, ± enclosing or covering stamens and style

25. Sterile stamen 0; lobes of upper corolla lip obscure or 0 ..... OROBANCHACEAE (2)

25' Sterile stamen present, inserted on corolla tube between lobes of upper corolla lip; lobes of upper lip evident ..... PLANTAGINACEAE (4) {G5,19}

24' Corolla upper lip not forming a beak or hood, not enclosing or covering stamens and style [though these may be included within corolla tube or throat]

26. Stigma lobes flat, disk-like, moving together when touched; cauline leaves opposite ..... PHRYMACEAE {G2,19}

26' Stigma dot-like or head-like, unlobed, or lobes not moving together when touched; cauline leaves opposite or alternate (whorled) or leaves all basal

27. Leaves all basal

28. Flowers solitary; stamens 4; leaves linear or awl-like to spoon-shaped or ovate, entire ..... SCROPHULARIACEAE (Limosella) {G2,19}

28' Flowers in raceme; stamens 2; leaves ovate to round, toothed or shallowly lobed ..... PLANTAGINACEAE (Synthyris)

27' Leaves basal and cauline or all cauline

29. Stem 4-angled; corolla tube urn-shaped to spheric ..... SCROPHULARIACEAE (Scrophularia)

29' Stem generally round in ×-section; corolla tube cylindric to bell-shaped, sometimes very short ..... PLANTAGINACEAE (4) {G5,19}


Copyright © 2013 Regents of the University of California