Pellaea glabella subsp. glabella

Mettenius ex Kuhn
Endemic
Synonyms: Pellaea atropurpurea var. bushii Mackenzie
Treatment appears in FNA Volume 2.
Revision as of 20:25, 5 November 2020 by imported>Volume Importer
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Some ultimate segments (especially terminal segments) with hairlike scales abaxially near midrib; most sporangia containing 32 spores; spores averaging 60–72 µm diam. n = 2n = 116, apogamous.


Phenology: Sporulating summer–fall.
Habitat: Calcareous cliffs and ledges, usually on limestone substrates
Elevation: 0–1200 m

Distribution

V2 766-distribution-map.gif

Ont., Que., Ark., Conn., Ill., Ind., Iowa, Kans., Ky., Md., Mass., Mich., Minn., Mo., Nebr., N.Y., Ohio, Okla., Pa., Tenn., Tex., Vt., Va., W.Va., Wis.

Discussion

G. J. Gastony (1988) has shown that this apogamous tetraploid was derived from Pellaea glabella subsp. missouriensis by an autopolyploid increase in chromosome number.

Selected References

None.

Lower Taxa

None.
Michael D. Windham +
Mettenius ex Kuhn +
Ont. +, Que. +, Ark. +, Conn. +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, Md. +, Mass. +, Mich. +, Minn. +, Mo. +, Nebr. +, N.Y. +, Ohio +, Okla. +, Pa. +, Tenn. +, Tex. +, Vt. +, Va. +, W.Va. +  and Wis. +
0–1200 m +
Calcareous cliffs and ledges, usually on limestone substrates +
Sporulating summer–fall. +
Pellaea atropurpurea var. bushii +
Pellaea glabella subsp. glabella +
Pellaea glabella +
subspecies +