Botanical sketches - Bryophytes

In 1976, while Edith Robertson (of the 1950 paper by Gimingham and Robertson fame1) was on sabbatical, I taught her courses at the University of the West Indies in Mona, Jamaica. Mrs Robertson introduced me to Jamaican bryophytes, as did another colleague, Daniel kelly (now Trinity College Dublin). I have scanned the sketches that I did of some of the things that we brought back from field trips in order to illustrate the kind of sketches I think students can achieve with some effort. With Daniel's help i made some identifications, but before posting these sketches for the class I sent the link to Dr. Raymond E. Stotler and Dr. Barbara J. Crandall-Stotler of the Department of Plant Biology, Southern Illinois University. Dr Stotler kindly replied with identifications of some of this material, as reproduced below. To see what these genera can look like in life please visit their website HERE.
Jamaican Anthoceros
Stotler re (27, above) - "This is a hornwort but not Anthoceros. It most likely is the genus Dendroceros. This is based upon the somewhat lobed thallus, the spiral elater, and the spores with plastids. This genus and Megaceros have those traits. Also, the structure surrounding the sporophyte is an involucre, not a calyptra."
Jamaican Marchantia 1
Stotler re (21, above, and below left) - "Marchantia domingensis (21) has been reduced to M. paleacea but your drawings do not fit that species. It is most likely Marchantia chenopoda. That taxon has 4 rows of ventral scales (as do most species) rather than 2 as you have illustrated. The other characters that you have fit M. chenopoda."
Jamaican Marchantia 2
Stotler re (23, above, right) - "OK."
Jamaican Monoclea
Stotler re (25, above) - "This is M. gottschei subspecies elongata. Riccardia (lower left) - there is no way to know the species without study of the specimen"
Jamaican Pallavicinia 1
Stotler re (19, above) - "This is a species of Symphyogyna; most likely S. brasiliensis. The tissue that you have labelled calyptra is a coelocaule - protective tissue of thallus origin that surrounds the sporophyte."
Jamaica Pallavicinia 2 Jamaican Fossombronia 1
Stotler re (33, above) - "This is likewise a species of Symphyogyna; most likely S. brongniartii, a lobate species.
(TAD) - Probably also a species of Symphogyna, or else Moerckia sp.
Jamaican Fossombronia 3 Jamaican Fossombronia 2
Stotler re (the above) - "This is Fossombronia but it is not possible to be sure of the species without study of the specimen. It might very well be F. brasiliensis = Fossombronia porphyrorhiza. The structure that you have labelled 'developing sporangia?' are antheridia."
Jamaica Neckeropsis
Jamaican Frullania Jamaican Bazzania
Stotler re (the above) - "This is not Frullania but rather a genus in the Lejeuneaceae. It looks like a species of the genus Cheilolejeunea but I can't be certain without study of the plants."
Stotler re (the above) - "This is Bazzania for sure; the branches are referrred to as flagelliform branches rather than filform."
Jamaica Moss 1 Jamaica Moss 2
 

Gimingham, C. H. and Robertson, E. T. 1950. Preliminary observations on the structure of bryophyte communities. Trans. Brit. Bryol. Soc. 1: 330-334. Reference obtained from http://www.bryoecol.mtu.edu/chapters/4-5AdaptStratForm.pdf, which is part of:
Glime, Janice M. 2007. Bryophyte Ecology. Volume 1. Physiological Ecology. Ebook sponsored by Michigan Technological University and the International Association of Bryologists. accessed on 6-Sep-2010 at <http://www.bryoecol.mtu.edu/>.


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