1. Capsules: dehiscence circumscissile. | → 2 |
2. Styles ± subulate (tapering from base to stigma). | → 3 |
3. Flowers: calyx and receptacle fleshy, corollas membranous; corolla lobes without hornlike appendages; capsules 4–7 × 4–6 mm. | C. mitriformis |
3. Flowers membranous; corolla lobes each with a hornlike appendage; capsules 1.8–2.5 × 1–2.5 mm. | → 4 |
4. Pedicels 0.2–0.6 mm; calyx lobes oblong, obovate, ovate, or spatulate, apex acute to obtuse, each exceeded by a hornlike appendage; seeds 0.7–1.1 × 0.7–0.9 mm. | C. boldinghii |
4. Pedicels 1.5–6 mm; calyx lobes oblong-obovate or orbiculate, apex ± truncate, each not exceeded by a hornlike appendage; seeds 0.9–1.4 × 0.8–1.3 mm. | C. erosa |
2. Styles filiform (not tapered; sometimes slightly subulate in C. dentatasquamata). | → 5 |
5. Calyces divided 1/4 length; seeds 1. | C. americana |
5. Calyces divided 1/3–3/4 length or ± to base; seeds (1 or)2–4. | → 6 |
6. Infrastaminal scales usually 1/4–1/2 corolla tube length (1/2 to equaling in C. odontolepis). | → 7 |
7. Inflorescences dense, paniculiform-glomerulate; calyx lobe bases overlapping; capsules 2.9–4 × 3–3.2 mm; seeds 1–1.2 × 0.6–0.8 mm. | C. odontolepis |
7. Inflorescences loose, racemiform or umbelliform; calyx lobe bases not overlapping; capsules 1.3–2.2 × (0.7–)1.5–2.3 mm; seeds 0.6–0.9(–1.1) × 0.3–0.8 mm. | → 8 |
8. Flowers 5-merous; calyx lobe midveins carinate; corolla lobes erect. | C. tuberculata |
8. Flowers (3 or)4-merous; calyx lobe midveins not carinate, sometimes with multicellular protuberances; corolla lobes spreading to reflexed. | → 9 |
9. Calyces 1/3–1/2 corolla tube length; infrastaminal scales 1/2 corolla tube length. | C. leptantha |
9. Calyces equaling corolla tube length; infrastaminal scales 1/4–1/3 corolla tube length. | C. liliputana |
6. Infrastaminal scales equaling or longer than corolla tube. | → 10 |
10. Pedicels 2–10 mm; calyx lobe midveins not carinate, without multicellular protuberances. | → 11 |
11. Flowers 4–5.5(–6) mm; calyx lobe apices acuminate. | C. legitima |
11. Flowers 2–3 mm; calyx lobe apices obtuse to acute. | C. umbellata |
10. Pedicels 0.3–2 mm; calyx lobe midveins carinate and/or with multicellular protuberances. | → 12 |
12. Calyx lobe bases overlapping, apices obtuse or rounded; corolla lobe apices rounded to obtuse. | C. chinensis |
12. Calyx lobe bases not overlapping, apices acute; corolla lobe apices acute. | → 13 |
13. Flowers 2–2.6 mm, membranous; calyces straw yellow; infrastaminal scales oblong or rounded, distal 1/2 fimbriate; capsules 1.5–2.5 × 1–1.8 mm. | C. azteca |
13. Flowers 2.6–3.8 mm, fleshy; calyces reddish brown; infrastaminal scales truncate or distally irregularly denticulate or 3–7-fimbriate; capsules 3–4 × 1.8–2.9 mm. | C. dentatasquamata |
| → 14 |
14. Bracts at bases of flower clusters, pedicels, and/or flowers (or on pedicels) 2–11; calyces divided to base or nearly so. | → 15 |
15. Pedicels 2–5 mm; inflorescences loose, paniculiform. | C. cuspidata |
15. Pedicels 0–1 mm; inflorescences glomerulate, ropelike, or spiciform. | → 16 |
16. Inflorescences dense, ropelike, spiraling around and closely appressed to host stem, individual flower clusters not discernible; bracts narrowly triangular to lanceolate, apex recurved. | C. glomerata |
16. Inflorescences dense to loose, glomerulate or spiciform, not ropelike, individual flower clusters discernible; bracts ovate-orbiculate to ovate-triangular, apex erect. | → 17 |
17. Calyx lobes orbiculate, apices rounded; corolla lobe apices obtuse; seeds 1.9–2.5 × 1.7–2.3 mm. | C. compacta |
17. Calyx lobes ovate, apices acute to cuspidate; corolla lobe apices usually acute, sometimes cuspidate; seeds 1.5–1.7 × 1.1–1.3 mm. | C. squamata |
14. Bracts at bases of flower clusters 1(–3), at bases of pedicels and/or flowers (0 or)1(–3); calyces divided 2/5–2/3 length. | → 18 |
18. Infrastaminal scales absent. | → 19 |
19. Corolla lobes ovate-triangular, 1/3–1/2 tube length, apices inflexed. | C. jepsonii |
19. Corolla lobes narrowly lanceolate to lanceolate, shorter than, equaling, or longer than tube, apices straight. | → 20 |
20. Styles 0.5–1(–1.5) mm; anthers 0.2–0.5 mm; capsules surrounded by, not completely enclosed by, withered corolla (capsule top visible). | C. occidentalis |
20. Styles 1.2–3 mm; anthers 0.6–1.1 mm; capsules surrounded by, sometimes also capped by, withered corolla (capsule top not or barely visible). | → 21 |
21. Calyces 1/4–1/2 corolla tube length; corolla lobes shorter than or equaling tube; stamen filaments 0.3–0.6 mm. | C. brachycalyx |
21. Calyces 3/4 to equaling corolla tube length; corolla lobes equaling or longer than tube; stamen filaments 0.6–1.1 mm. | C. californica |
18. Infrastaminal scales present. | → 22 |
22. Infrastaminal scales relatively poorly developed, apically irregularly denticulate, or 2-fid with 1–3 fimbriae on each side of filament attachment, or 2-fid with denticulate wings. | → 23 |
23. Calyx lobes each with a hornlike appendage 0.5–0.7 mm. | C. warneri |
23. Calyx lobes without hornlike appendages. | → 24 |
24. Calyx lobe apices obtuse to rounded. | C. polygonorum |
24. Calyx lobe apices acute to long-attenuate. | → 25 |
25. Flowers fleshy; corolla lobe apices acute, inflexed; styles 0.7–1.8 mm, usually equaling, sometimes longer than, ovary; capsules not translucent, interstylar aperture relatively large; 50–1200 m, not California, Oregon, Washington. | C. coryli |
25. Flowers membranous; corolla lobe apices lance-attenuate, straight; styles 0.3–0.7 mm, 1/4 ovary length; capsules translucent, interstylar aperture relatively small; 1500–2600 m, California, Oregon, Washington. | C. suksdorfii |
22. Infrastaminal scales well developed, notably fimbriate. | → 26 |
26. Calyx and corolla lobe apices dissimilar: calyx lobe apices obtuse, rounded, or subacute; corolla lobe apices usually acuminate, acute, or subacute, sometimes cuspidate, mucronate, or truncate, usually inflexed (± cucullate in C. draconella). | → 27 |
27. Calyces 1/2–3/4 corolla tube length; corolla lobes 1/2 tube length. | C. suaveolens |
27. Calyces usually equaling corolla tube length, sometimes shorter (C. runyonii); corolla lobes equaling or longer than tube. | → 28 |
28. Flowers (3 or)4(or 5)-merous. | → 29 |
29. Calyces angled, lobe bases overlapping, midvein ± carinate; capsules globose to ovoid; seeds 1 or 2. | C. harperi |
29. Calyces not angled, lobe bases not overlapping, midvein not carinate; capsules depressed-globose; seeds 3 or 4. | C. polygonorum |
28. Flowers (4 or)5-merous. | → 30 |
30. Calyx lobe midveins with multicellular protuberances. | → 31 |
31. Calyces ± angled, lobe bases overlapping. | C. draconella |
31. Calyces not angled, lobe bases not overlapping. | C. runyonii |
30. Calyx lobe midveins without multicellular protuberances. | → 32 |
32. Calyces angled, lobes broadly ovate to rhombic, bases auriculate, overlapping; flowers 1.4–2.5 mm; corolla tubes 0.7–1.2 mm; anthers 0.2–0.3 mm. | C. pentagona |
32. Calyces not angled, lobes ovate-triangular to triangular, not auriculate, bases overlapping or not; flowers 1.9–4.6(–5) mm; corolla tubes 1.1–2.5 mm; anthers (0.3–)0.4–0.7 mm. | → 33 |
33. Calyx lobe bases overlapping; capsules to 1/3 enveloped by withered corolla. | C. campestris |
33. Calyx lobe bases not or slightly overlapping; capsules 1/2+ enveloped by withered corolla. | → 34 |
34. Perianths papillate (sometimes not obvious in calyx); corollas drying reddish brown to yellow, tube campanulate, later globose, saccate between lines of stamen attachments; infrastaminal scales equaling or longer than corolla tube. | C. glabrior |
34. Perianths not papillate; corollas drying creamy white, tube narrowly campanulate to cylindro-campanulate, not saccate between lines of stamen attachments; infrastaminal scales 3/4–4/5 corolla tube length. | C. plattensis |
26. Calyx and corolla lobe apices similar: calyx lobe apices either: 1) usually acuminate, acute, long-attenuate, and rarely cuspidate (C. subinclusa) or subacute, or 2) usually obtuse to rounded; corolla lobe apices acuminate, acute, long-attenuate, cuspidate (C. pacifica and C. salina), obtuse, or rounded, usually straight, rarely inflexed (C. indecora) or recurved (C. howelliana). | → 35 |
35. Calyx lobe apices obtuse to rounded; corolla lobe apices obtuse to rounded. | → 36 |
36. Calyces straw yellow, reticulate, shiny, lobe margins denticulate; seeds 1, globose to globose-ovoid. | C. denticulata |
36. Calyces yellow-brown or brownish, not or finely reticulate, or not or slightly shiny, lobe margins usually entire, sometimes serrulate; seeds (1 or)2–4, ± angled, ellipsoid, obcompressed, oblong, obovoid, ovoid, or subglobose. | → 37 |
37. Flowers (3 or)4(or 5)-merous. | C. cephalanthi |
37. Flowers (4 or)5-merous. | → 38 |
38. Calyces equaling corolla tube length; capsules depressed-globose, not raised or thickened around interstylar aperture. | C. obtusiflora |
38. Calyces usually 1/3–1/2 corolla tube length, sometimes equaling corolla tube (C. gronovii var. latiflora); capsules conic-globose, ovoid, or subobpyriform, raised and thickened around interstylar aperture. | → 39 |
39. Flowers 4–6(–7) mm; capsules broadly ovoid (with stout beak 1–1.5 mm). | C. rostrata |
39. Flowers 2–4(–4.4) mm; capsules conic-globose, ovoid, or subobpyriform (rarely apically narrowed into a neck to 1 mm). | → 40 |
40. Infrastaminal scales equaling corolla tube; styles (0.6–)1.2–2.2 mm; capsules 2.5–4.5(–5.2) mm. | C. gronovii |
40. Infrastaminal scales (1/3)–1/2 corolla tube length; styles 0.3–0.9 mm; capsules 3.5–6.5(–7) mm. | C. umbrosa |
35. Calyx lobe apices usually acuminate, acute, or long-attenuate, rarely cuspidate (C. subinclusa); corolla lobe apices usually acuminate, acute, or long-attenuate, sometimes cuspidate (C. pacifica and C. salina). | → 41 |
41. Flowers fleshy; corolla lobe apices inflexed. | C. indecora |
41. Flowers membranous or base of perianth and receptacle fleshy (C. nevadensis); corolla lobe apices usually straight, rarely recurved (C. howelliana). | → 42 |
42. Flowers 5–7(–9) mm; calyces 1/2 corolla tube length; corolla lobes 1/4–1/3 tube length; anthers 0.8–2 mm. | C. subinclusa |
42. Flowers (2.5–)2.8–5(–6) mm; calyces equaling or longer than corolla tube; corolla lobes equaling or longer than tube; anthers 0.3–0.8 mm. | → 43 |
43. Infrastaminal scales equaling corolla tube; embryo bases globose-enlarged. | C. nevadensis |
43. Infrastaminal scales 1/2–2/3(–4/5) corolla tube length; embryo bases not globose-enlarged. | → 44 |
44. Flowers embedded in inflorescence of host, 4(or 5)-merous; calyx lobe apices acuminate to long-attenuate; capsules depressed-globose to globose. | C. howelliana |
44. Flowers not embedded in inflorescence of host, 5-merous; calyx lobe apices acuminate to acute; capsules ellipsoid-ovoid or ovoid. | → 45 |
45. Inflorescences subglomerulate to umbelliform; pedicels 0.5–2 mm; flowers 3.5–6 mm; corolla tubes campanulate, lobes broadly ovate to rhombic-ovate; infrastaminal scales 1/2–3/4 corolla tube length; coastal salt marshes and tidal flats, coastal interdune depressions and grasslands. | C. pacifica |
45. Inflorescences corymbiform; pedicels (0.5–)1–5 mm; flowers 2.5–4.5 mm; corolla tubes ± cylindric-campanulate to obconic, lobes lance-oblong to lance-ovate; infrastaminal scales 4/5 corolla tube length; inland salt flats. | C. salina |