-
plants in shallow calcareous soils and gravels on low hillside slope of white blocky Cretaceous limestone. Site represents an extreme eastern outlier of Chihuahuan Desert flora (Agave lechuguilla present) in transition to upland Tamaulipan brushland of Rio Grande plains.
-
annual plants on flat plains of a large bolson (los llanos), in silty, slightly saline, gyp-calcareous clay soil, along the margin between a long abandoned agricultural area and undisturbed native scrub. Pappus not examined- no variety determined.
-
-
-
ephemeral annuals in largely overgrazed playa grassland on silty clay flats of the extensive Mimbres playa, with Atriplex acanthocarpa, Pleuraphis mutica, Sporobolis airoides, Gutierrezia, Tidestromia and Prosopis glandulosa
-
-
on low badland slopes and drainage rills in fractured gypseous, shaley Cretaceous limestone with Stenandrium barbatum, Amsonia longiflora, Ariocarpus fissuratus, Echinocactus horizonthalonius, Nama havardii, Thymophylla acerosa, Dalea wrightii, Polygala macradenia, Nerisyrenia camporum.
-
along highway right-of-way on low hillside slope of white chalky limestone
-
in white limestone gravels on low hillside slope above south edge of large arroyo in Heath Canyon.
-
uncommon silver-gray, canescent foliaged perennial on coarse gravel ridge over flat lying limestone outcrops in braided arroyo stream bed. NOTE: name var. radiata was determined to be illegitimate and is considered a synonym of var. greggii.
-
plants in shallow calcareous soils and gravels on low hillside slope of white blocky Cretaceous limestone. Site represents an extreme eastern outlier of Chihuahuan Desert flora (Agave lechuguilla present) in transition to upland Tamaulipan brushland of Rio Grande plains.
-
annual plants on flat plains of a large bolson (los llanos), in silty, slightly saline, gyp-calcareous clay soil, along the margin between a long abandoned agricultural area and undisturbed native scrub. Pappus not examined- no variety determined.
-
-
-
ephemeral annuals in largely overgrazed playa grassland on silty clay flats of the extensive Mimbres playa, with Atriplex acanthocarpa, Pleuraphis mutica, Sporobolis airoides, Gutierrezia, Tidestromia and Prosopis glandulosa. Note the conspicuous translucent blister-like oil glands on phyllaries.
-
-
small, woody based sub-shrub on grayish crust of weathered gypsum re-cementing gravels of anhydrite gypsum and calcareous shaley limestone substrate exposed on SW facing lower foothill slopes of the escarpment, with endemic Anulocaulis leiosolensis v. howardii, Mentzelia humilis v. guadalupensis, Nerisyrenia hypercorax.
-
along highway right-of-way on low hillside slope of white chalky limestone
-
annual on broad outwash drainage sheet of small gravels and sand
-
plants in shallow calcareous soils and gravels on low hillside slope of white blocky Cretaceous limestone. Site represents an extreme eastern outlier of Chihuahuan Desert flora (Agave lechuguilla present) in transition to upland Tamaulipan brushland of Rio Grande plains.
-
annual plants on flat plains of a large bolson (los llanos), in silty, slightly saline, gyp-calcareous clay soil, along the margin between a long abandoned agricultural area and undisturbed native scrub. Pappus not examined- no variety determined.
-
ephemeral annuals in largely overgrazed playa grassland on silty clay flats of the extensive Mimbres playa, with Atriplex acanthocarpa, Pleuraphis mutica, Sporobolis airoides, Gutierrezia, Tidestromia and Prosopis glandulosa.
-
Image taken during Jepson workshop: Mojave Flora with Bruce Baldwin and James Andre.
-
small, woody based sub-shrub on grayish crust of weathered gypsum re-cementing gravels of anhydrite gypsum and calcareous shaley limestone substrate exposed on SW facing lower foothill slopes of the escarpment, with endemic Anulocaulis leiosolensis v. howardii, Mentzelia humilis v. guadalupensis, Nerisyrenia hypercorax.
