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Paedomorphic sporophyte development in Bruchia flexuosa (Bruchiaceae)

Publication ,  Journal Article
Shaw, AJ; Anderson, LE; Mishler, BD
Published in: Bryologist
January 1, 2000

Cleistocarpous mosses, those lacking a differentiated operculum and having the capsule dehisce irregularly, are generally thought to have evolved via reduction from stegocarpous ancestors. Bruchia (Bruchiaceae), a cleistocarpous genus of approximately 15 species, shares gametophytic similarities with the genus Trematodon, which has a functional annulus and dehiscent capsule. The sequence of cell divisions characterizing the sporophyte of Bruchia flexuosa shows that development is typically haplolepideous up to the stage in which the peristomial formula is 4:2:2. Whereas other haplolepideous species, including Trematodon longicollis, complete development with a 4:2:3 peristomial formula, the last set of anticlinal divisions in the Inner Peristomial Layer do not occur in B. flexuosa, which therefore appears to mature at what is an immature stage in related stegocarpous taxa. This pattern of development is consistent with an origin of the cleistocarpous capsules of Bruchia through paedomorphosis from a Trematodon-like (haplopideous) ancestor.

Duke Scholars

Published In

Bryologist

DOI

ISSN

0007-2745

Publication Date

January 1, 2000

Volume

103

Issue

1

Start / End Page

147 / 155

Related Subject Headings

  • Plant Biology & Botany
  • 3108 Plant biology
  • 0607 Plant Biology
 

Citation

APA
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ICMJE
MLA
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Shaw, A. J., Anderson, L. E., & Mishler, B. D. (2000). Paedomorphic sporophyte development in Bruchia flexuosa (Bruchiaceae). Bryologist, 103(1), 147–155. https://doi.org/10.1639/0007-2745(2000)103[0147:PSDIBF]2.0.CO;2
Shaw, A. J., L. E. Anderson, and B. D. Mishler. “Paedomorphic sporophyte development in Bruchia flexuosa (Bruchiaceae).” Bryologist 103, no. 1 (January 1, 2000): 147–55. https://doi.org/10.1639/0007-2745(2000)103[0147:PSDIBF]2.0.CO;2.
Shaw AJ, Anderson LE, Mishler BD. Paedomorphic sporophyte development in Bruchia flexuosa (Bruchiaceae). Bryologist. 2000 Jan 1;103(1):147–55.
Shaw, A. J., et al. “Paedomorphic sporophyte development in Bruchia flexuosa (Bruchiaceae).” Bryologist, vol. 103, no. 1, Jan. 2000, pp. 147–55. Scopus, doi:10.1639/0007-2745(2000)103[0147:PSDIBF]2.0.CO;2.
Shaw AJ, Anderson LE, Mishler BD. Paedomorphic sporophyte development in Bruchia flexuosa (Bruchiaceae). Bryologist. 2000 Jan 1;103(1):147–155.

Published In

Bryologist

DOI

ISSN

0007-2745

Publication Date

January 1, 2000

Volume

103

Issue

1

Start / End Page

147 / 155

Related Subject Headings

  • Plant Biology & Botany
  • 3108 Plant biology
  • 0607 Plant Biology