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Specimen collected at Rancho Santa Ana Botanic Garden by Fred Roberts for oak workshop.
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somewhat common scrub on dry slope of narrow canyon in deeply eroded escarpment of volcanic tuff forming continental divide. Massive rock hodoos (the Monks) makes this area incredibly scenic in addition to richly diverse botanically. NOTE: Upper leaf surface glabrous, lower side thinly tomentose equates to Q. striatula, here considered a synonym of Q. microphylla
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small shrubby trees along arroyo course in white limestone gravels, boulders and exposed low bedrock outcrops, with oak, mesquite, Dasylirion and Yucca.
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trees on grassy volcanic alluvium of lower canyon terrace below western rim of Barranca Sirupa
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