1920-21.] BOTANICAL SOCIETY OF EDINBURGH 65 



up loch, 10 feet above sea-level, Loch of Langamay, Lady, 

 Sanday, 27th August 1920, H. H. Johnston; and shell- 

 sandy mud at bottom of water, 3 inches deep, in a loch 

 near the sea, 8 feet above sea-level. Loch of The Rive, 

 Burness, Sanday, 28th August 1920, H. H. Johnston, "a 

 ver}' neat form with the cortical cells of almost equal 

 diameter" {fide J. Groves). Native and common at both 

 stations, especially at the Loch of Langamay, where nearly 

 the whole of the bed of the loch was densely covered with 

 it at the time of my visit. Confirms the record of this 

 species from Orkney (Loch of Air}' in Stronsay ) in Xeill, 

 "Tour," p. 184 (1906). See " Journ. Bot.," Xo.^xiii, p. 17 

 (January 1864); "Scot. Xat.," No. iii, new series, p. 114 

 (January 1884), where this species is recorded from Brogar 

 on the authority of the late Dr. A. R. Duguid, but a 

 specimen collected by me in the Loch of Harray, near the 

 Bridge of Brogar, Stenness, Mainland, on 24th September 

 1880, and named " Chara hlspida, Linn." by the late Dr. 

 J T. I. B. Boswell, has been identilied as C. desmacantha, 

 J. Groves et Bullock- Wehste7\ by Mr. James Groves ; " Annals 

 Scot. Nat. Hist.," No. 34, p. 107 (April 1900); and Spence, 

 "Flora Orcadensis," p. 98 (1914). Specimens of C. hlspida, 

 Linn, (fide James Groves), were collected at the Loch of 

 Langamay (" Longmay marshy loch "), Sandaj^, on 20th 

 July 1898, by the late Mr. A. Somerville, and I have seen 

 them in the herbarium of Mr. James Groves. 



Chara rudis, Leonhardi (fide James Groves). — Shell- 

 sand}?" mud at the bottom of water, 2 inches deep, in 

 a nearl}^ dried-up loch, 10 feet above sea-level, Loch of 

 Langamay, Lady, Sanday, 27th August 1920, H, H. 

 Johnston. Native. Plants growing among C. hlspida, 

 Linn. " Very characteristic " (fide J. Groves). The 

 secondary cortical cells of the stem are much greater in 

 diameter than the primary cortical cells. A new record 

 for H. C. Watson's county No. Ill Orkney. 



Chara canescens, Loiseleur (fide James Groves). — Mud 

 at bottom of brackish water, 5 feet deep, in a loch at sea- 

 level, near the noust for boats, Nether Bigging, Loch of 

 Stenness, Mainland, 14th September 1920, H. H. Johnston. 

 Native. Common. With reference to my specimens of 

 this species, Mr. James Groves, in a note dated 18th Nov- 



