|Female plants of Sphaerocarpos texanus bearing mature sporophytes.|
Sphaerocarpus berterii Aust., 1873
Sphaerocarpos texanus are small, thalloid, dioecious liverworts. The species is sexually dimorphic, with male plants usually 3–5 mm in diameter, females up to 12 mm in diameter. Both male (bearing antheridia) and female (bearing archegonia) plants are bright green, with the thallus branching up to several times. The plant is a winter annual, appearing in autumn and dying in spring. Notably, the spores occur in sets of four, called tetrads. Unlike most other species of liverwort, the spores stay in these tetrads until they germinate.
The plant is found on flat, lightly shaded soil. Usually by roadsides.
Sphaerocarpos texanus has a wide range, probably the widest of any species in its genus. It has been found on several continents, in the United States, Uruguay, England, Germany, France and Morocco.
- Austin, C. F. (1877). "New Hepaticae". Bulletin of the Torrey Botanical Club. 8: 157–158.
- Edwards, Sean R. (2012). English Names for British Bryophytes. British Bryological Society Special Volume. 5 (4 ed.). Wootton, Northampton: British Bryological Society. ISBN 978-0-9561310-2-7. ISSN 0268-8034.
- "Sphaerocarpos hians sp. nov., with a revision of the genus and illustrations of the species". Bull. Torrey Bot. Club. 37, 5: 215–230. 1910.
- "Sex-specific germination response in the liverwort Sphaerocarpos texanus (Sphaerocarpaceae)". Bryologist. 104,1: 69–71. 2001.
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