602 FILICES 



**Secale cereale, Linn. Sp. PI. 84 (1753), and Herb. Rye. 



Occurs as a casual on rubbish-heaps and waysides, as at G-randpont. Abing- 

 don, Didcot, Maidenhead, and Windsor, but does not become established. 



**HoRDEUM DisTicHON, Linn. Sp. PI. 85 (1753). Barley. 



Is found by field borders, &c., as a casual plant, but it does not establish 



itself. 



=^*H. HEXASTicHON, Linn. Sp. PI. 85 (1753). 



Has been noticed as a casiial plant by the river near Folly Bridge, by 

 Mr. F. T. Eichards^ and at Moulsford and Theale, &c. 



**SoRGHUM vuLGARE, Pcrs. Syn. i. loi (1805). 

 Casual. Field near Theale. 



I ara indebted to Messrs. Sutton & Sons, of Reading, for repeated kind- 

 nesses, and I may take this opportunity of drawing attention to their Grass 

 (rarden, which was laid out by Mr. Martin Sutton some thirty years ago, 

 and which represents fifty-two genera, now arranged according to Benthana 

 and Hooker's Genera Plantarum consisting of 170 species and varieties of 

 grasses, 100 being native of the British Isles, forty-one Continental, eighteen 

 species frora North America, and the remainder natives of India and the 

 Colonies. 



Each species occupies a plot some nine feet by six feet, and the garden is 

 so arranged that the merits of different agricultural grasses may be readily 

 compared, while admitting of the study of the prominent characters of the 

 inferior and worthless kinds. 



There are five species of Phleum under observation, seven kinds of Agrostis, 

 six species of Avena, thirteen species and varieties of the genus Poa. The 

 number of Fescues in the garden is twenty-four. The genus Bromus is 

 represented by twenty species. The different genera of Lolium, Hordeum, 

 and Elymus are also well shown. 



The ' one grass ' plots, of which there are forty, were laid down each with 

 a single variety of grass, and accurate notes have been made on the relative 

 yield of the various agricultural grasses, duration of each species, period of 

 starting into growth in the spring and lateness of autumn growth, the 

 variation in time of flowering, and the effect on each variety of early or late 

 cutting. 



ACOTYLEDONES, Jussieii, Gen. i (1789). 



PTERIDOPHYTA, Cohn in Hedwigia, xi. (1871) 18. 



FILICES, Linn. Gen. p. 484. 



PTERIS, Linn. Gen. n. 1038. 



P. aquilina, Linn. Sj). PI. 1075 (1753). Bracken Fern. 



Filix foemina, Gerard, 969. Eupieris aquilina, Newman in Phyt. ii. 

 (1845) 278. Pteridium aquilinum^ Kuhn. in Luerss. Farnpfl. 104, 

 and Asch. Syn. 82. 



Top. Bot. 520. Syme, E. B. xii. 145, t. 1886. Nyman, 861. Fl. Oxf. 357. 



Native. Ericetal, &c. Bushy places, heaths, open woods, parks on 

 sandy soil. Abundant on sandy soil throughout the county. 

 Absent from chalky, stiff clayey, and calcareous soil. P. July- 

 August. 



