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2a. Pentagramma triangularis subsp. maxonii (Weatherby) Yatskievych, Windham, & E. Wollenweber, Amer. Fern J. 80: 16. 1990.
Pityrogramma triangularis (Kaulfuss) Maxon var. maxonii Weatherby, Rhodora 22: 119. 1920
Petiole glabrous, not viscid-glandular, rarely white-farinose proximally. Blades thin and herbaceous (but not leathery), not viscid-glandular, abaxially densely white-farinose, adaxially with scattered yellow capitate glands. Distal pinnae mostly regularly lobed. Proximal basiscopic lobes of basal pinnae pinnatifid, often deeply so. 2 n = 60, 120.
Desert scrub and in pine and oak woodlands; 100--2500 m; Ariz., Calif., N.Mex.; Mexico in Baja California, Sonora.
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