EXTRACTS AND ABSTRACTS. 287 



tember 2, 1875." — Tom Drummond. This is, I believe, the first un- 

 doubted native station recorded for this plant. Mr. Drummond has 

 found it also in Glen of Sorrow, about three miles above Dollar, Clack- 

 mannanshire. J. T. Bos WELL. 



Triticum acutum, DC. "Sandy bank of the river Dee, near 

 Heswell Point, Hundred of Wirrall, Cheshire, September 25, 1875, 

 New to Cheshire." — Robert Brown. 



Triticum "acutum, DC." " Littlehampton, West Sussex." — J, 

 L. AVarrejST. This is T. pungens, var. a. genuinum, E. B., ed. 3. — 



J. T. BosWELL. 



Chara hispida, Linn., var. polyacantha, A.. Br. " Very abundant 

 in a small lake near Thirsk, N. Yorkshire. New to Yorkshire. From 

 the copiousness of the spines on some parts of the stem the specific 

 characters are difficult to determine ; but where the stem is less 

 covered the spiral arrangement of the furrows and the position of the 

 spines on the tubes are better seen. December 23, 1875." — Fred. 

 Addison-. 



Chara fragilis, Desv. " Pool on Lizard Downs, W. Cornwall, 

 July, 1873. I sent specimens of this to Professor Babington, who 

 kindly examined them for me, and said that he considered them ' C. 

 fragilis ; very fine and slender. ' " — W. H. Beeby. 



T. R. ARCHER ERIGGS. 

 June 24, 1876. 



On a Disease of Olive and Orange Trees. By^W. G. Farlow. (Bull, 

 of Bussey Inst, and Amer. Journ. Sc. and Arts, July, 1876.) — This 

 paper contains an account of a fungoid disease which in California 

 obtains such mastery over the Olive as to prevent its producing any 

 fruit, while Orange and Lemon trees attacked by it bear fruit, but of 

 very inferior quality. In the case of the Olive, the disease attacks 

 the twigs as well as the leaves, covering the parts with black spots, and 

 causing the latter organs to become brown and shrivelled. Its mycelium 

 consists of moniliform threads, apparently devoid of hausteria, which 

 run over the surface of the epidermis and twine closely round the 

 stem of the plant's stellate hairs. The reproductive organs are — offsets 

 from the hyphse, consisting of two cells which become isolated and 

 germinate, Macrosporoid and Helminthosporoid bodies, picnidia, and 

 liask-shaped stylospores, inside which are produced tetraseptate spores 

 attached to short filaments lining the base and lower part of the sides 

 of the fiask. Precisely the same Fungus is found on the Orange, but 

 in its case the mycelium can be readily scraped off", owing to the 

 glabrous condition of the leaf. The author has ascertained that the 

 picnidial form is identical with Antennaria elmophila, Mart., while the 

 stylosporous state is Capnodium citri^ Berk. & Desm. ; and he thinks 

 it probable that, although asci were not found, the Fungus is identical 

 with Fumago salicina. He seems also to consider that insect- 

 puncture has aff'orded a nidus for the germinating spores, but we 

 venture to think that honey-dew, which is more widely diff'used 

 through the vegetable kingdom than is generally believed, has had 

 more to do with it. The paper is extra-mycologically interesting, as 

 showing how stellate hairs may be a positive disadvantage ; we do not 

 rememltcr to have seen any illustration with an opposite import. 



