Notholaena grayi
Gray's cloak fern
scales concolored to weakly bicolored, margins usually brown, very narrow and poorly defined, thin, ciliate-denticulate.
5–20 cm.
brown, equal to or somewhat shorter than blade, rounded adaxially, glandular-farinose, bearing scattered hairs and scales.
linear-lanceolate, 2-pinnate-pinnatifid, 3–6 times longer than wide, abaxially with conspicuous whitish farina and dull, light brown, lanceolate, entire scales scattered along rachises and costae, adaxially distinctly glandular;
basal pinnae equal to or slightly larger than adjacent pair, ± equilateral, proximal basiscopic pinnules not greatly enlarged.
sessile, broadly adnate to costae;
segment margins slightly recurved, rarely concealing sporangia.
containing 16 or 32 spores.
Notholaena grayi
Subspecies 2 (2 in the flora).
Notholaena grayi comprises two cytotypes here treated as subspecies. Sexually reproducing diploid populations (N. grayi subsp. sonorensis) are concentrated in southern Arizona and western Mexico. Apogamous triploids (N. grayi subsp. grayi) are more widespread, extending from Arizona to central Texas and northeastern Mexico. Isozyme analyses indicate that subsp. grayi is an autotriploid derivative of subsp. sonorensis (G. J. Gastony and M. D. Windham 1989).
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Most sporangia containing 16 spores; spores generally more than 55 µm. | subsp. grayi |
1. Most sporangia containing 32 spores; spores generally less than 55 µm. | subsp. sonorensis |
WildflowerSearch
iNaturalist
USDA Plants Database
