Leslie Newton Goodding

Pellaea truncata is a species of fern known by the common name spiny cliffbrake. It is native to the southwestern United States and northern Mexico, where it grows in rocky areas, such as cliffs and slopes.

Muhlenbergia appressa, the Devils Canyon muhly, is a species of grass. It is native to the desert region where California and Arizona border Baja California. Muhlenbergia appressa has also been collected on San Clemente Island, one of the Channel Islands of California, in the chaparral and woodlands habitat.. Muhlenbergia appressa is an annual grass growing up to about 40 centimeters tall. The inflorescence is very narrow, with short, appressed branches. The spikelets have awns up to 3 centimeters long. Spikelets low on the inflorescence often stay wrapped in sheaths and do not bloom.

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Astrolepis cochisensis is a species of fern known by the common name Cochise scaly cloak fern. It is native to the southwestern United States and northern Mexico, where it occupies mainly desert habitat, often on calcareous soils.

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