Andreaea rupestris, photographed by Michael Lüth.

Belongs within: Musci.

As recognised here, the Andreaeopsida comprise a small assemblage of basal mosses in which the spores are released from the capsule via dehiscence through longitudinal slits, rather than via an operculum as in other mosses (Smith & Davison 1993). The monophyly of the Andreaeopsida is uncertain, with many authors regarding its members as a paraphyletic grade dividing the basal Sphagnopsida from the remaining mosses. The position of Takakia has been particularly contentious, but it has been linked to Andreaeobryum by features such as the presence of secondary protonemata and of massed beaked mucilage-producing papillae. Species of Andreaeaceae are epilithic: Andreaea typically grows on granite or other acidic rocks while Andreaeobryum macrosporum grows on limestone (Flora of North America).

    |--Takakia [Takakiaceae, Takakiales, Takakiidae] FHH01
    |    `--T. ceratophylla FHH01
    `--Andreaeaceae [Andreaeales, Andreaeidae] FHH01
         |--Andreaeobryum macrosporum FHH01
         |--Acroschisma wilsoni D03
         `--Andreaea Hedw. 1801 SK02
              |--A. acutifolia Hooker & Wilson 1844 SK02
              |    |--A. a. ssp. acutifolia SK02
              |    `--A. a. ssp. acuminata (Mitt.) Vitt 1980 SK02
              |--A. alpina Hedw. 1801 SK02
              |--A. amblyophylla Müll.Hal. ex Broth. 1895 SK02
              |--A. appendiculata D03
              |--A. asperula Mitt. 1860 [incl. A. muelleri (nom. inv.)] SK02
              |--A. australis Mitt. 1856 SK02
              |--A. erubescens Müll.Hal. 1898 SK02
              |    |--A. e. var. erubescens SK02
              |    `--A. e. var. nigrita Müll.Hal. 1898 SK02
              |--A. eximia Müll.Hal. 1898 SK02
              |--A. flabellata Müll.Hal. 1883 SK02
              |--A. flexuosa R.Br.bis 1893 SK02
              |--A. gainii Cardot 1911 SK02
              |--A. heinemannii Hampe & Müll.Hal. 1846 SK02
              |--A. julicaulis Müll.Hal. 1898 SK02
              |--A. laxifolia D03
              |--A. marginata D03
              |--A. microvaginata Müll.Hal. 1898 SK02
              |--A. montana Mitt. 1859 SK02
              |--A. mutabilis Hooker & Wilson 1844 (see below for synonymy) SK02
              |--A. nitida Hooker & Wilson 1844 SK02
              |--A. petrophila D03
              |--A. pseudo-alpina D03
              |--A. rothii FHH01
              |--A. rupestris Hedw. 1801 [incl. A. petrophila] SK02
              |--A. subulata Harv. ex Hooker 1840 (see below for synonymy) SK02
              |    |--A. s. var. subulata D03
              |    `--A. s. var. perichaetialis D03
              |--A. tasmanica Rodway 1916 SK02
              `--A. tenera Müll.Hal. 1898 SK02

Nomina nuda: Andreaea loricata Dusén 1903 D03
             Andreaea pulvinatula Dusén 1903 D03
             Andreaea purpurascens Dusén 1903 D03
             Andreaea vermicularis Dusén 1903 D03

Andreaea mutabilis Hooker & Wilson 1844 [incl. A. amblyophylla var. attenuata, A. amblyophylla var. bullata, A. homomalla] SK02

Andreaea subulata Harv. ex Hooker 1840 [incl. A. pseudosubulata, A. subulata var. rigida, A. subulatissima] SK02

*Type species of generic name indicated


[D03] Dusén, P. 1903. Patagonian and Fuegian mosses. In Reports of the Princeton University Expeditions to Patagonia, 1896-1899, vol. 8 – Botany (W. B. Scott, ed.) pp. 63-126. The University: Princeton (New Jersey).

[FHH01] Frey, W., M. Hofmann & H. H. Hilger. 2001. The gametophyte-sporophyte junction: Unequivocal hints for two evolutionary lines of archegoniate land plants. Flora 196: 431-445.

Smith, D. K., & P. G. Davison. 1993. Antheridia and sporophytes in Takakia ceratophylla (Mitt.) Grolle: evidence for reclassification among the mosses. Journal of the Hattori Botanical Laboratory 73: 263-271.

[SK02] Streimann, H., & N. Klazenga. 2002. Catalogue of Australian Mosses. Flora of Australia Supplementary Series 17. Australian Biological Resources Study: Canberra.

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