Compilation
Cheilanthes dealbata

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Name

Identification
Cheilanthes dealbata Pursh [family PTERIDACEAE ] (stored under name); Verified by Swan, J.,
Related name
  • Pellaea dealbata
  • Cheilanthes doniana
  • Notholaena dealbata
  • Notholaena limitanea
  • Cheilanthes farinosa
  • Aleuritopteris gymnocarpa
  • Cheilanthes dealbata
  • Unknown

Flora

Entry for Argyrochosma dealbata (Pursh) Windham [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
Argyrochosma dealbata (Pursh) Windham [family ADIANTACEAE], Amer. Fern J., 77: 40. 1987
Cheilanthes dealbata Pursh [family ADIANTACEAE], Fl. Amer. Sept., 2: 671. 1814
Notholaena dealbata (Pursh) Kunze [family ADIANTACEAE]
Pellaea dealbata (Pursh) Prantl [family ADIANTACEAE]
Treatment Author(s)
Michael D. Windham
Information
Stem scales brown. Leaves 3--15 cm. Petiole chestnut brown, 0.50--0.75 mm diam. Blade deltate, 3--5-pinnate proximally, somewhat herbaceous, abaxially covered by whitish farina, adaxially glabrous or sparsely glandular; rachis rounded to slightly flattened adaxially. Pinna costae straight or nearly so, branches not arising from prominent angles. Ultimate segments not articulate, dark color of stalks continuing into segment bases abaxially; segment margins recurved, often partially concealing sporangia; veins often visible adaxially. Sporangia submarginal, borne on distal 1/3 of secondary veins, containing 64 spores. 2 n = 54.
Phenology
Sporulating summer--fall
Altitude range
100--600 m
Distribution
USA Ark.USA Ill.USA Kans.USA Ky.USA Mo.USA Nebr.USA Okla.USA Tex.
Discussion
The distinctions between Argyrochosma dealbata and A . limitanea are subtle but apparently absolute. Although both occur in Texas, their ranges do not overlap. Despite the morphologic similarities, isozyme analyses indicate that A . dealbata , a diploid species, was not involved in the origin of polyploid A . limitanea .

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