Compilation
Cheilanthes candida

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Name

Identification
Cheilanthes anceps Blanf. [family PTERIDACEAE ] (stored under name); Verified by Christopher Roy Fraser-Jenkins, Cheilanthes candida Zoll. [family PTERIDACEAE ]
Related name
  • Notholaena candida
  • Cheilanthes candida
  • Cheilanthes anceps

Flora

Entry for Notholaena copelandii C. C. Hall [family ADIANTACEAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 2,
Names
Notholaena copelandii C. C. Hall [family ADIANTACEAE], Amer. Fern J., 40: 181, plate 16. 1950
Cheilanthes candida M. Martens & Galeotti var. copelandii (C. C. Hall) Mickel [family ADIANTACEAE]
Chrysochosma candida (M. Martens & Galeotti) Kümmerle var. copelandii (C. C. Hall) Pichi-Sermolli [family ADIANTACEAE]
Notholaena candida (M. Martens & Galeotti) Hooker var. copelandii (C. C. Hall) R. M. Tryon [family ADIANTACEAE]
Treatment Author(s)
Michael D. Windham
Information
Stem scales strongly bicolored, margins brown, broad and well defined, thin, weakly ciliate. Leaves 6--25 cm. Petiole black, equal to or somewhat longer than blade, rounded adaxially, glabrous except for a few scales and farinose glands near base. Blade ovate, 2-pinnate-pinnatifid, 1--2 times longer than wide, abaxially with conspicuous white farina, scales absent, adaxially glandular; basal pinnae much larger than adjacent pair, strongly inequilateral, proximal basiscopic pinnules greatly enlarged. Ultimate segments sessile, broadly adnate to costae; segment margins slightly recurved, rarely concealing sporangia. Sporangia containing 64 spores. 2 n = 60.
Phenology
Sporulating summer--fall
Altitude range
300--1500 m
Distribution
Mexico.USA Tex.
Discussion
Notholaena copelandii often has been treated as a variety of the Mexican species N . candida (M. Martens & Galeotti) Hooker. The two taxa show significant differences in stem scale and leaf morphology (R. M. Tryon 1956), density of glands on the adaxial leaf surface, and chemical composition of the farinose indument (E. Wollenweber 1984). Measures of genetic similarity based on isozyme data indicate that N . copelandii and N . candida are quite distinct and, at present, allopatry precludes gene flow. Past hybridization may account for the small number of intermediate specimens reported from San Luis Potosí, Mexico, by R. M. Tryon (1956).

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