DISTRIBUTION AND OCCURRENCE
SPECIES: Cupressus macnabiana | Macnab Cypress 



GENERAL DISTRIBUTION : 
MacNab cypress occurs only in California and has the widest distribution
of any of the California cypress [14,27].  Numerous scattered groves
occur in the inner North Coast Ranges, the Sierra Nevada foothills, and
the Cascade Range [14,24,27].  Over 30 groves occur in the following
counties:  Sonoma, Napa, Yolo, Mendocino, Lake, Colusa, Tehama, Shasta,
Butte, Nevada, Yuba, and Amador [27].


ECOSYSTEMS : 
   FRES20  Douglas-fir
   FRES21  Ponderosa pine
   FRES27  Redwood
   FRES28  Western hardwoods
   FRES34  Chaparral - mountain shrub


STATES : 
     CA


ADMINISTRATIVE UNITS : 
     WHIS


BLM PHYSIOGRAPHIC REGIONS : 
    3  Southern Pacific Border
    4  Sierra Mountains


KUCHLER PLANT ASSOCIATIONS : 
   K005  Mixed conifer forest
   K006  Redwood forest
   K029  California mixed evergreen forest
   K030  California oakwoods
   K033  Chaparral


SAF COVER TYPES : 
   229  Pacific Douglas-fir
   232  Redwood
   233  Oregon white oak
   244  Pacific ponderosa pine - Douglas-fir
   245  Pacific ponderosa pine
   247  Jeffrey pine
   248  Knobcone pine


SRM (RANGELAND) COVER TYPES : 
NO-ENTRY


HABITAT TYPES AND PLANT COMMUNITIES : 
MacNab cypress is a component of the northern interior cypress forest.
This community is an open, fire-maintained, scrubby forest similar to
the knobcone pine (Pinus attenuata) forest.  It is associated with
serpentine chaparral, and intergrades on less severe sites with upper
Sonoran mixed chaparral, montane chaparral, or knobcone pine forest
community types.  On more mesic sites the northern interior cypress
forest intergrades with mixed evergreen forest or montane coniferous
forest [11].  MacNab cypress is associated with redwood (Sequoia
sempervirens)-Douglas-fir (Pseudotsuga menziesii) forest and associated
North Coast forests in Mendocino County, California [6,26].  It is also
commonly associated with chaparral and pine-oak (Pinus-Quercus spp.)
woodland species [8,27].  The Magalia grove in Butte County is
surrounded by yellow pine forest (Pinus ponderosa and P. jeffreyi) [27].
MacNab cypress occurs sympatrically with Sargent cypress in Lake County,
California [16].

Publications naming MacNab cypress as a community dominant are listed below.

Terrestrial natural communities of California [9]  
Terrestrial vegetation of California [27]

Species not previously mentioned but commonly associated with MacNab
cypress include gray pine (Pinus sabiniana), sugar pine (P.
lambertiana), incense-cedar (Libocedrus decurrens), California scrub oak
(Quercus dumosa), leather oak (Q. durata), interior live oak (Q.
wislizenii), valley oak (Q. lobata), Sierra coffeeberry (Rhamnus rubra),
California coffeeberry (R. californica), yerba santa (Eriodictyon
californicum), chaparral pea (Pickeringia montana), golden-fleece
(Haplopappus arborescens), Garrya congdonii (interior silktassel),
California hop tree (Ptelea crenulata), chamise (Adenostoma
fasciculatum), wedgeleaf ceanothus (Ceanothus cuneatus), musk brush (C.
jepsonii), whiteleaf manzanita (Arctostaphylos viscida), creeping sage
(Salvia sonomensis), and styrax (Styrax officinalis var. californica)
[6,24,26,27].
 

Related categories for Species: Cupressus macnabiana | Macnab Cypress