Following is a list of corrections (some minor and some more substantial) and elaborative comments to the 2nd Edition published in January 2006, in order of page number:

Pg.vii Geography, para.1, the Plant Atlas reports there are 2,314 taxa in SD County as of June 2006.
Pg.ix para.1, spelling “Pacific”.
Pg.xiii para.2, line 1, spelling "Department".
Pg.xv “Otay Mountain Management Area”, delete period.
Pg.xvi para.2, after fires new plants are encouraged by fresh nutrients and greater sunlight and moisture reaching soil.
Pg.xviii para.3, many names and classifications in the Jepson Manual are obsolete but descriptions of plants are still authoritative.
Pg.xix para.3, plant specimens are analyzed to describe traits and define taxa.
Pg.xxi weed eradication may take years to verify and complete.
Pg.xxvii definitions for "prickles", "spines" and "thorns" were omitted and are not clearly differentiated in the text of the book. Prickles often emerge from bark (as on a Rose); spines may emerge from beneath the plant skin (as in cactus); thorns may be thought of as sharply pointed twigs (as on a Smoke Tree).
Pg.xxvii definition of "sessile", flower lacking pedicel or leaf lacking petiole.
Pg.5 Pinus quadrifolia, also called Parry Pinyon, considered by some experts to be hybrid between P.monophylla and P.juarezensis.
Pg.12 Rhus trilobata, found to 6000’ elev. in SD County.
Pg.13 Schinus terebinthifolius, line 6, lflts. rather than lvs.
Pg.23 Ericameria cuneata var. spathulata, also grows in Foothills (F).
Pg.26 Isocoma menziesii, line 1 right, delete extra parenthesis.
Pg.30 Xylorhiza orcuttii, line 3 right, delete period.
Pg.36 top line 2, spelling "Cholla".
Pg.45 Atriplex polycarpa, spelling “photos”.
Pg.46 Salicornia virginica recently reclassified as Sarcocornia v.; Salicornia subterminalis reclassified as Arthrocnemum s.
Pg.47 Euonymus occidentalis, line 6, delete extra period.
Pg.54 Tetracoccus now classified in family Picodendraceae.
Pg.57 top line 1, spelling "robustness".
Pg.60 Psorothamnus schottii, line 5, delete period after "simple".
Pg.61 Spartium junceum, line 1, <4000' not <4000".
Pg.64 Quercus dumosa, spelling "canyons".
Pg.67 Quercus kelloggii, line 5 right, delete extra period.
Pg.76 top line 3, spelling “include”.
Pg.80 Eucalyptus sideroxylon is not frequently naturalized in SD Co. Photos at top R. are E. conferruminata (E. lehmannii), called Bushy Yate, which is widely naturalized near SD Co. coast but absent from 2001 Checklist and 1996 Jepson Manual.
Pg.84 Mimulus aurantiacus, line 7, southeast SD plants are variety aridus.
Pg.94 Rhamnus pilosa, spelling "Rhamnus".
Pg.97 Adenostoma sparsifolium, line 1 right, “high plateaus”.
Pg.115 Vitaceae is Grape Family.
Pg.117 Agave deserti, found to 4000’ elev. in SD County.
Pg.128 Pentagramma triangularis, line 5 right, spelling “shows”.
Pg.132 Chenopodium album, C. multifidum recently reclassified in genus Dysphania.
Pg.136 Lomatium utriculatum photo and text omitted.
Pg.144 top line 3, Calycoseris mentioned but shown on page 141.
Pg.144 Aster species recently reclassified in genus Symphiotricum.
Pg.144 Bidens should precede Blennosperma alphabetically.
Pg.149 Coreopsis maritima, spelling “scrub”.
Pg.149 Coreopsis gigantea is native in Malibu area as well as Channel Islands.
Pg.154 Gnaphalium bicolor recently reclassified as Pseudognaphalium bioletti.
Pg.155 Gnaphalium canescens, ssp. beneolens should be listed; photos likely G.c.b.
Pg.156 Grindelia hirsutula, line 3, "other vars." not other sspp.
Pg.158 Holocarpha virgata, line 4 right, “see tar” refers to resin on finger in photo.
Pg.162 Lessingia filaginifola recently reclassified as Corethrogyne f.
Pg.169 genus Sonchus, S.asper is also common in SD County.
Pg.170 Stephanomeria: line 3 right, <10’ ht. not <6’ ht. line 6 right, spelling “stiffly”. Photos at right likely S. diegensis not S. virgata. Range of S. diegensis now documented to 40 miles inland (to 3500’ elev.).
Pg.171 Tragopogon dubius not T. porrifolius.
Pg.173 Heliotropium now classified in family Heliotropaceae.
Pg.174 Cryptantha micromeres photo and text omitted.
Pg.179 Phacelia tanacetifolia, possible waif planted by resident.
Pg.180 Tiquilia now classified in family Ehretiaceae.
Pg.181 Arabis spp. excluding A. glabra recently reclassified in genus Boechera.
Pg.187 top line 3, add period after “drainages”; delete “around”.
Pg.189 Caulanthus simulans, line 3 right, delete < before: 1000-5000’.
Pg.192-4 header, spelling “Caryophyllaceae”.
Pg.195 Calystegia macrostegia, ssp. arida said now to include sspp. intermedia and tenuifolia.
Pg.201 Eremocarpus setigerus recently reclassified as Croton s.
Pg.203 Astragalus, right, line 5, delete period after "endemic".
Pg.215 Header line 1, delete period after SD Co.'s
Pg.216 Gentianaceae, line 1, small family in SD County.
Pg.217 Erodium macrophyllum (not shown), a native Erodium, now has its own genus California.
Pg.224 Header, Loasaceae is Loasa Family, also called Eveningstar Family.
Pg.226 Malva neglecta, photo (singular).
Pg.230 Camissonia cardiophylla - Heart-leaf Evening Primrose - is usually a perennial.
Pg.237 Castilleja minor, ssp. should be spiralis not minor.
Pg.239 Paeonia californica, line 4, spelling “segments”.
Pg.242 Papaver rhoeas, line 3, replace (top R) with (R).
Pg.244 header, spelling “Phrymaceae”.
Pg.246 Collinsia concolor, left photo of flowers should show more blue, less magenta.
Pg.249 Plantago ovata, species also common in desert.
Pg.253 Saltugilia caruifolia, line 1 right, >2000’ not >2000”.
Pg.253 Aliciella latifolia, also grows in Desert Transition (T).
Pg.262 page bottom, R. salicifolius refers to Rumex salicifolius.
Pg.284 top line 1, spelling Dichelostemma.
Pg.284 Brodiaea: specimens in SD Co. formerly called B. jolonensis now believed to be B. terrestris ssp. kernesis.
Pg.285 Cyperaceae, line 4, "Male flwrs." (not Males).
Pg.287 Scirpus acutus, S. americanus, S. californicus and S. pungens recently reclassified in genus Schoenoplectus.
Pg.302 Vulpia myuros, var. myuros also common in SD Co.
Pg.308 Payson, dates 1883-1927.
Pg.309 Footnote, Michael Charters is a principal source, not a primary source.
Pg.310 Spelling “Batis maritima”.
Pg.312 Spelling “Coyote Bush”.
Back Cover Item 6, spelling “Biogeography”.

See also Tom Chester's comments.
- Thank you, Tom!

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