PLOT D 71 



recent explanation may of course be found in Darwin's book 

 on " Climbing Plants." 



Ord. 92. RUBIACEAE include three groups of plants, two of 

 which (i) the Coffee-trees, and (2) Cinchonas, yielding 

 quinine, including Bouvardia, are exotic ; but the third or 

 Stellate tribe is represented in temperate climes by the Bed- 

 straws, Galium ; Madder, Rubia tinctoria ; Woodruff, Asperula 

 odorata ; and the common Field Madder, bearing the name 

 of the founder of our chair of Botany, Sherardia arvensis. 



Ord. 93. VALERIANACEAE are remarkable for the wonderful 

 psychological effects they have upon cats, both large and 

 small. A small sprig thrown into a lion's cage will cause him 

 to roll upon it in a great state of excitement. Centranthus 

 ruber is naturalised upon many a Cornish wall and elsewhere 

 in England (cf. p. 133). 



Ord. 94. DIPSACEAE. Dried Teazles, flower-heads of Dip- 

 sacus fullonum, are used for fulling cloth. Several species of 

 Scabious are cultivated in flower-gardens. 



PLOT D 



In beds shaded on the east by a row of N. American 

 trees, we find 



Ord. 96. COMPOSITAE. The most numerous family of all 

 the flowering plants and world-wide in distribution. Eleven 

 tribes are distinguished. 



i. Eupatorieae, represented in England by Hemp 

 Agrimony, E. cannabinum, have local reputations of 

 being able to cure most diseases, including cholera 

 and snake-bite. 



ii. Asteroideae. The Daisies grow near the south- 

 west corner. North of these are the 

 iii. Senecionideae. The Groundsel, S.vulgaris^ belongs 

 here, as does the Oxford Ragwort, S. squalidus, 

 common on our old walls, and introduced perhaps 

 from Sicily to the Botanic Garden, whence it has 



