Appendix B. Ceanothus occurrence matrix. (CT = Coast and Transverse Ranges; SN = Sierra Nevada).
| Data SetCT/SNSiteCerastes taxa present | Euceanothus taxa present |
| Ackerly 2002CTJasper Ridge, San Mateo Co.C. cuneatus cuneatus | C. oliganthus sorediatus |
| D. Schwilk, pers. obs.CTHoplandC. cuneatus cuneatus | C. foliosus |
| D. Schwilk, pers. obs.CTSan Diego Co. 1C. crassifolius | C. tomentosus |
| D. Schwilk, pers. obs.CTSan Diego Co. 2 | C. crassifolius C. megacarpus megacarpus |
| D. Schwilk, pers. obs.CTSanta Barbara Co.C. megacarpus megacarpus | C. spinosus |
| Davis 1999CTTransverse Ranges, highC. crassifolius | C. leucodermis |
| Davis 1999CTTransverse Ranges, intermediateC. cuneatus cuneatus | C. oliganthus oliganthus |
| Davis 1999CTTransverse Ranges, lowC. megacarpus megacarpus | C. spinosus |
| Hanes 1967CTSan Gabriel Mts.C. crassifolius | C. oliganthus oliganthus |
| Hanes 1971CTSan Gabriel Mts. coastalC. crassifolius | C. leucodermis |
| Hanes 1971CTSan Gabriel Mts. desertC. greggii | C. leucodermis |
| Keeley 1977CTSouth San Diego Co.C. greggii | C. leucodermis |
| Keeley 1993CTCaliforniaC. crassifolius | C. oliganthus oliganthus |
| Keeley 1993CTGreen MeadowC. megacarpus megacarpus | C. spinosus |
| Keeley 1993CTGuijitoC. crassifolius | C. tomentosus |
| Keeley 1993CTMill CreekC. greggii | C. oliganthus oliganthus |
| Keeley 1993CTOak GlenC. greggii | C. oliganthus oliganthus |
| Keeley 1993CTOrtegaC. crassifolius | C. spinosus |
| Keeley 1993CTRainbowC. crassifolius | C. tomentosus |
| Keeley 1993CTTopanga 1 | C. cuneatus cuneatus C. megacarpus megacarpus |
| Keeley 1993CTTopanga 2C. megacarpus megacarpus | C. spinosus |
| Keeley 1993CTWheelC. crassifolius | C. oliganthus oliganthus |
| N. Rajakaruna, pers. obs.CTMcLaughlin Serpentine, Lake Co. | C. jepsonii jepsonii C. cuneatus cuneatus |
| Nicholson 1993CTLas FloresC. megacarpus megacarpus | C. spinosus |
| Nicholson 1993CTLittle SycamoreC. megacarpus megacarpus | C. spinosus |
| Nicholson 1993CTRattlesnake HighC. crassifolius | C. oliganthus oliganthus |
| Nicholson 1993CTRattlesnake LowC. megacarpus megacarpus | C. spinosus |
| Nicholson 1993CTRefugio HighC. cuneatus cuneatus | C. leucodermis |
| Nicholson 1993CTRefugio LowC. megacarpus megacarpus | C. spinosus |
| Nicholson 1993CTRefugio MedC. cuneatus cuneatus | C. spinosus |
| Nicholson 1993CTSanGabriel LowC. crassifolius | C. oliganthus oliganthus |
| Nicholson 1993CTSanGabriel MedC. leucodermis | C. integerrimus |
| Nicholson 1993CTSespe LowC. crassifolius | C. spinosus |
| Nicholson 1993CTSespe MedC. crassifolius | C. oliganthus oliganthus |
| Soucy 2001CTNorth Coastal BasinC. cuneatus cuneatus | C. sanguineus |
| D. Schwilk, pers. obs.SNMariposa Co.C. cuneatus cuneatus | C. integerrimus C. tomentosus |
| D. Schwilk, pers. obs.SNSequoia NP, Tulare Co. |
C. cordulatus C. integerrimus C. parvifolius |
| YosemiteSN98K11C. cuneatus cuneatus | C. integerrimus |
| YosemiteSN98K31 |
C. cordulatus C. integerrimus |
| YosemiteSN98K6 | C. cuneatus cuneatus C. crassifolius |
| YosemiteSN98K64 |
C. cordulatus C. integerrimus C. parvifolius |
| YosemiteSN98K8C. cuneatus cuneatus | C. integerrimus |
| YosemiteSN98M18C. cuneatus cuneatus | C. integerrimus |
| YosemiteSN98M36C. cordulatus | C. parvifolius |
| YosemiteSN99K37C. cuneatus cuneatus | C. integerrimus |
| YosemiteSN99K41 | C. cuneatus cuneatus C. fresnensis |
| YosemiteSN99K52C. cuneatus cuneatus | C. integerrimus |
| YosemiteSN99S105 |
C. integerrimus C. parvifolius |
| YosemiteSN99S23C. cuneatus cuneatus | C. integerrimus |
| YosemiteSN99S47 |
C. cordulatus C. integerrimus |
| YosemiteSN99S48 |
C. cordulatus C. integerrimus |
Sources: Ackerly 2002: Ackerly, D. D., C. A. Knight, S. B. Weiss, K. Barton, and K. P. Starmer. 2002. Leaf size, specific leaf area and microhabitat distribution of woody plants in a California chaparral: contrasting patterns in species level and community level analyses. Oecologia 130:449-457. Davis 1999: Davis, S. D., F. W. Ewers, J. Wood, J. J. Reeves, and K. J. Kolb. 1999. Differential susceptibility to xylem cavitation among three pairs of Ceanothus species in the Transverse Mountain Ranges of southern California. Ecoscience 6:180-186. Hanes 1967: Hanes, T. L., and H. W. Jones. 1967. Postfire chaparral succession in southern California. Ecology 48:259-264. Hanes 1971: Hanes, T. L. 1971. Succession after fire in the chaparral of southern California. EcolMonogr. 41:27-52. Keeley 1977: Keeley, J. E. 1977. Seed Production, Seed Populations in Soil, and Seedling Production after Fire for 2 Congeneric Pairs of Sprouting and Non-Sprouting Chaparral Shrubs. Ecology 58:820-829. Keeley 1993: Plots established in southern California following 1993 fires. Data provided by J. Keeley, USGS Sequoia and KingÕs Canyon Research Station, Three Rivers, CA. Nicholson 1993: Nicholson, P. 1993. Ecological and historical biogeography of Ceanothus (Rhamnaceae) in the Transverse Ranges of southern California. Ph.D. thesis. University of California, Los Angeles, CA. Soucy 2001: Soucy, N., B. Marckmann, K. Slauson, D. Boiano, and S. Green. 2001. Ecological Inventory Manual: An Introduction to the Wildlands and Focal Species of the California North Coastal Basin; version 2.5. (http://www.legacy-tlc.org/reports/EIM/EIM2001V2-5part1.html)
Yosemite: NatureServe 2002, Classification of the Vegetation of Yosemite National Park and Surrounding Environs in Tuolumne, Mariposa, Madera and Mono Counties, California (in cooperation with CNPS and CNHP, Cal Dept Fish and Game). Data provided by Peggy Moore, USGS Western Ecological Research Center, El Portal, CA