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Hordeum intercedens
Common Name: vernal barley
Family: Poaceae
Element Code: PMPOA380E0
Full Name: Hordeum intercedens Nevski

2010 Gary A. Monroe
Biology Glossary
  • Lifeform: annual herb
  • Blooming Period: Mar-Jun
  • Habitat:  
    • Coastal dunes
    • Coastal scrub
    • Valley and foothill grassland (saline flats and depressions)
    • Vernal pools
Rarity Status Glossary
Occurrence Data from CDFW
California Natural Diversity Database Glossary
  • Total # of Known Element Occurrences:
  • Element Occurrence Ranks:
    A B C D X U
  • Population Status:
    >20 yrs
    <=20 yrs
  • Presence:
    Present Extant Possibly Extirpated Presumed Extirpated
Notes Glossary
  • Move to CRPR 1B or 4? Many herbarium specimens of H. intercedens are possible misidentifications of H. depressum; need annotations. Many mainland occurrences are in decline or possibly extirpated; need field surveys. Threatened by development, habitat loss, road construction, and non-native plants. Previously confused with H. pusillum. Similar to H. depressum; the two may hybridize in RIV Co. See Acta Inst. Bot. Acad. Sci. U.R.S.S. Ser. 1, Fasc. 5:222 (1941) for original description and Nordic Journal of Botany 2:307-321 (1982) for taxonomic treatment.
  • To submit rare plant observation data, use the CNDDB field survey form. Please see also the CNPS Rare Plant Data page.
  • Date Added: 1994-01-01
  • Last Update: 2013-09-17
Location Glossary
  • Elevation: 5 - 1000 meters
  • California Endemic: no
  • Other States: Baja California
  • California Counties and Islands:   name (code)
    Anacapa Island (ANA),  Fresno (FRE),  Kings (KNG),  Kern (KRN),  Los Angeles (LAX),  Merced (MER),  Mono (MNO),  Nevada (NEV),  Orange (ORA),  Riverside (RIV),  Santa Barbara (SBA),  Santa Barbara Island (SBR),  San Benito (SBT),  San Clemente Island (SCM),  Santa Catalina Island (SCT),  Santa Cruz Island (SCZ),  San Diego (SDG),  San Miguel Island (SMI),  San Mateo (SMT),  San Nicolas Island (SNI),  Santa Rosa Island (SRO),  Tulare (TUL),  Ventura (VEN)
  • Quads:   name (DWR code) USGS code
    Potrero (009D) 3211655,  Jamul Mountains (010B) 3211668,  Otay Mesa (010C) 3211658,  National City (011A) 3211761,  Point Loma (011B) 3211762,  Poway (022A) 3211781,  Del Mar (022B) 3211782,  La Jolla (022C) 3211772,  La Mesa (022D) 3211771,  Santa Ysabel (033C) 3311616,  San Marcos (035B) 3311722,  San Luis Rey (036A) 3311723,  Encinitas (036D) 3311713,  Fallbrook (051A) 3311743,  Margarita Peak (051B) 3311744,  Las Pulgas Canyon (051C) 3311734,  Morro Hill (051D) 3311733,  San Clemente (052A) 3311745,  Dana Point (052B) 3311746,  San Onofre Bluff (052D) 3311735,  Winchester (068A) 3311761,  Murrieta (068C) 3311752,  Lake Elsinore (069A) 3311763,  El Toro (070B) 3311766,  San Juan Capistrano (070C) 3311756,  Tustin (071A) 3311767,  Newport Beach (071B) 3311768,  Laguna Beach (071D) 3311757,  El Casco (085A) 3311781,  Perris (085C) 3311772,  Lakeview (085D) 3311771,  Black Star Canyon (087C) 3311776,  Inglewood (090A) 3311883,  Venice (090B) 3311884,  Los Angeles (110C) 3411812,  Canoga Park (112A) 3411825,  Newbury Park (113B) 3411828,  Triunfo Pass (113C) 3411818,  Santa Barbara (142B)* 3411946,  Whitaker Peak (163C) 3411856,  Stevens (240C) 3511932,  Pixley (288A) 3511983,  Exeter (333C) 3611932,  Monson (334A) 3611943,  Vanguard (336C) 3611938,  Ciervo Mtn. (339A) 3612045,  San Benito Mtn. (339C) 3612036,  San Felipe (385B) 3612184,  Stevinson (423D) 3712037,  Lee Vining (453A) 3711981,  Soda Springs (555C) 3912034,  Anacapa Island (ANAC) 3311983,  Santa Barbara Island (SBRA) 3311848,  San Clemente Island Central (SCMC) 3211874,  San Clemente Island North (SCMN) 3211885,  San Clemente Island South (SCMS) 3211873,  Santa Catalina East (SCTE) 3311833,  Santa Catalina North (SCTN) 3311844,  Santa Catalina South (SCTS) 3311834,  Santa Catalina West (SCTW) 3311845,  Santa Cruz Island A (SCZA) 3311987,  Santa Cruz Island B (SCZB) 3311986,  Santa Cruz Island C (SCZC) 3311985,  Santa Cruz Island D (SCZD) 3311984,  San Nicolas Island (SNIC) 3311924,  Santa Rosa Island East (SROE) 3311988,  Santa Rosa Island South (SROS) 3312071
  • Notes:
      Definitions of codes preceding a county and/or quad:
      * Presumed extirpated
      ? Uncertain about distribution or identity
      ?* Uncertain about distribution, but presumed extirpated if once present
      (?) Occurrence confirmed, but possibly extirpated
      Species may be present in other areas where conditions are favorable. This data should NOT be substituted for pre-project review or for on-site surveys.
Includes unprocessed quads for CRPR 3 and 4 plants; unprocessed location data has not been quality controlled and may contain errors.
Presumed Extant Presumed Extirpated or Unknown 1696
Links to Leading Resources of Taxon Information
Suggested Citation
California Native Plant Society, Rare Plant Program. . Inventory of Rare and Endangered Plants of California (online edition, v8-03). Website http://www.rareplants.cnps.org [accessed ].

3211655=Potrero (009D) 3211655;3211668=Jamul Mountains (010B) 3211668;3211658=Otay Mesa (010C) 3211658;3211761=National City (011A) 3211761;3211762=Point Loma (011B) 3211762;3211781=Poway (022A) 3211781;3211782=Del Mar (022B) 3211782;3211772=La Jolla (022C) 3211772;3211771=La Mesa (022D) 3211771;3311616=Santa Ysabel (033C) 3311616;3311722=San Marcos (035B) 3311722;3311723=San Luis Rey (036A) 3311723;3311713=Encinitas (036D) 3311713;3311743=Fallbrook (051A) 3311743;3311744=Margarita Peak (051B) 3311744;3311734=Las Pulgas Canyon (051C) 3311734;3311733=Morro Hill (051D) 3311733;3311745=San Clemente (052A) 3311745;3311746=Dana Point (052B) 3311746;3311735=San Onofre Bluff (052D) 3311735;3311761=Winchester (068A) 3311761;3311752=Murrieta (068C) 3311752;3311763=Lake Elsinore (069A) 3311763;3311766=El Toro (070B) 3311766;3311756=San Juan Capistrano (070C) 3311756;3311767=Tustin (071A) 3311767;3311768=Newport Beach (071B) 3311768;3311757=Laguna Beach (071D) 3311757;3311781=El Casco (085A) 3311781;3311772=Perris (085C) 3311772;3311771=Lakeview (085D) 3311771;3311776=Black Star Canyon (087C) 3311776;3311883=Inglewood (090A) 3311883;3311884=Venice (090B) 3311884;3411812=Los Angeles (110C) 3411812;3411825=Canoga Park (112A) 3411825;3411828=Newbury Park (113B) 3411828;3411818=Triunfo Pass (113C) 3411818;3411946=Santa Barbara (142B)* 3411946;3411856=Whitaker Peak (163C) 3411856;3511932=Stevens (240C) 3511932;3511983=Pixley (288A) 3511983;3611932=Exeter (333C) 3611932;3611943=Monson (334A) 3611943;3611938=Vanguard (336C) 3611938;3612045=Ciervo Mtn. (339A) 3612045;3612036=San Benito Mtn. (339C) 3612036;3612184=San Felipe (385B) 3612184;3712037=Stevinson (423D) 3712037;3711981=Lee Vining (453A) 3711981;3912034=Soda Springs (555C) 3912034;3311983=Anacapa Island (ANAC) 3311983;3311848=Santa Barbara Island (SBRA) 3311848;3211874=San Clemente Island Central (SCMC) 3211874;3211885=San Clemente Island North (SCMN) 3211885;3211873=San Clemente Island South (SCMS) 3211873;3311833=Santa Catalina East (SCTE) 3311833;3311844=Santa Catalina North (SCTN) 3311844;3311834=Santa Catalina South (SCTS) 3311834;3311845=Santa Catalina West (SCTW) 3311845;3311987=Santa Cruz Island A (SCZA) 3311987;3311986=Santa Cruz Island B (SCZB) 3311986;3311985=Santa Cruz Island C (SCZC) 3311985;3311984=Santa Cruz Island D (SCZD) 3311984;3311924=San Nicolas Island (SNIC) 3311924;3311988=Santa Rosa Island East (SROE) 3311988;3312071=Santa Rosa Island South (SROS) 3312071