CM1

   
                            View of site 1                                                        Typical crust at site 1

Clark Mountains, San Bernardino Co., California, USA.  Near a gypsum mine.  35° 38.105' N latitude, 115° 30.744' W longitude, 1090 m elevation.  The site had a very rocky and gravelly surface, with lichen crusts between the rocks.   Date of sampling:  5 June 1998 by Johansen & St. Clair.

Dominants vascular plants at the site:   Ephedra funerea, Larrea tridentata, Yucca schidigera.

Other common vascular plants:   Allionia incarnata, Ambrosia dumosa, Bromus rubens, Calochortus flexuosus, Coryphantha vivipara var. deserti, Eshinocereus englemannii, Encelia virginensis, Erioneuron pulchellum, Dyssodia thurberi, Eriogonum inflatum, Krameria erecta, Lepidium lasiocarpum, Plantago ovata, Pleuraphis rigida, Psorothamnus fremontii, Opuntia acanthocarpa, Sphaeralcea rusbyi, Viguiera deltoides, Xylohiza tortifolia.

Mean lichen crust thickness:  13.6 mm

Cover summary:

Type Cover                % Cover
Shrubs                            0.0                       
Annuals                         7.6  
Perennial grasses         0.0
Perennial forbs             0.0
Algal crust                     1.2
Bryophytes                    4.0
Lichen crust                 12.4               
Bare Soil                         1.2
Rock                              29.6
Gravel                           42.0
 Litter                              1.6 
Cactus                             0.4