SHORT NOTES ' 77 



Morpeth, which occurred in Ma} r last. The plant was first published 

 by Mr. Rolfe in the Annals of Botany (vi. 325 ; 1892) as BZabenari- 

 orchis viridi-maculata — a name, framed in accordance with the 

 Candollean rule, which indicates its parentage : the description and 

 accompanying plate were taken from Mr. Perceval's specimen, which 

 was collected at Longwitton in July, 1891. The discoverer succeeded 

 in preserving and increasing the plant, and early in 1919 sent tubers 

 to Kew, where it flowered in the rock-garden. In the Orchid Review 

 for 1919 (p. Ill), from which the above information is taken, 

 Mr. Rolfe records the appearance of a very similar plant at Levally, 

 near Enniskillen, where two specimens were found in July of that 

 year. " Some ten years after the original plant appeared, an Orchis 

 mixta Doinin was described (Sitz. Bohm. G-es. Wiss. xxii. 7) from a 

 single! example found on the mountains on the north-east frontier of 

 Bohemia, which was said to combine the characters of Cceloglossiini 

 viride and Orchis macalafa; this plant afterwards became Orchi- 

 cceloglossum mixtum Asch. & Grsebn. (Syn. Mitt. Eur. iii. 287) " 

 ( Rolfe, /. c). Mr. Perceval contributed short notes to this Journal in 

 1893-4; he was for many years interested in Fungi, and many of the 

 drawings in the Wheeler collection are from specimens furnished by 

 him. In 1872 Percival found specimens of Battarea phalloides in the 

 Earl of Egmont's grounds at Nork, near Epsom ; these formed the 

 subject of a paper communicated by him to the British Association in 

 1875 and published in the Report for that year (part 2, 15S) ; see 

 also Journ. Bot. 1916, 106. — James Britten. 



Agrostis nigra in Erance : a Correction. In this Journal 

 for 1913, p. 196, was recorded the finding in the Var of what I 

 supposed was A. nigra With. Recently on examination of two 

 specimens, and comparison with English examples of that little-known 

 grass, I was not satisfied with the determination ; and" on sending a 

 specimen to Dr. Stapf he told me it was Boa trivialis ! I much 

 regret this bad mistake, through attempting to determine in the S. of 

 France, without reference to actual specimens, a grass which a 

 generation ago under Bagnall's tuition in the Midlands I got to 

 know well. — H. Stuart Thompson. 



Atrip-lex calotheca : a Correction. I regret to find that 

 the plant recorded (Journ. Bot. 1920, 295) under this name proves 

 not to be that species ; the recoi'd must therefore be withdrawn. — ■ 

 Arthur Bennett. 



REVIEWS. 



The Marine Algce of the Danish West Indies. By F. BoPigesen. 



Copenhagen : Bianco Luno. Vol. i., 222 pp., 170 figs., 1913-11 ; 



vol. ii., 198 pp., 435 figs., 1915-20. 8vo. 

 The Marine Algye of the West Indies have attracted the attention 

 of naturalists ever since the time of Sir Hans Sloane ; specimens 

 dating from the beginning of the XVIIIth Century are preserved in 

 his herbarium in the British Museum. The first large methodical 

 collection made in the region was that of Maze who explored the 

 coasts of Guadeloupe. A few sets of these algse, named and numbered, 



