ON THE t-ORSET FLORA. 2? 



producing scores of separate plants. This mode of reproduction 

 is well-known to botanists, but is, I think, not often seen on any 

 but a small scale. Thesium kumifusum, DC., Hemsworth Down 

 and King's Down, near Badbury ; Bottlebrush Down, near 

 Cranborne. 



Euphorbia platyphyllos, L., in a brickyard near Verwood 

 Station. The Edmondsham locality, reported in my previous 

 paper is on a farm in Goatham, where the species was in 

 profusion in the summer of 1906. G. Cornfield between Worth 

 Matravers and St. Aldhelm's Head ; this would be a confirmation 

 in recent years of W. Borrer's former record. E. exigua, L., 

 near the Lighthouse, Durlston Head, and at Seacombe, a curious 

 prostrate form, proving that the plant may have been native 

 before it became a weed of cultivation. Mercurialis annua, 

 L., Handley. Var. ambigita, L. G. In weedy allotments, 

 Stoborough. 



Cannabis saliva, L., Hemp, an alien, Longfleet. Parietaria 

 officinalis, L., Horton ; Cranborne. C. Preston ; Osmington. It 

 is interesting to watch the action of the stamens on maturing 

 with a low power. Before exploding the filaments are strongly 

 bent inwards, and the anthers are crowded together ; as each 

 matures, the filament flies outward with elastic force to its full 

 stretch, and simultaneously the anther explodes, and a cloud of 

 pollen is puffed out. This remarkable process, Avhich serves to 

 bring about the fertilisation of the pistilliferous flowers, should 

 be looked for under full sunshine; in the shade the filaments 

 remain folded. Carpinus Betuhis, L., Edmondsham, one tree 

 (planted no doubt) in the Park ; St. Giles' Park, a few trees 

 toward the N.E. corner. Castanea saliva, L., Edmondsham, in 

 the Park and plantations. 



Salix iriandra, L., Bailey Gate ; Witchampton ; Peat Moors 

 River ; Verwood ; Holwell. C. Dorchester. D. Lytchett 

 Minster. G. Corfe Castle. 6". decipiens, Hoffm., Parkstone, two 

 bushy trees, which the making of a new road endangered, when 

 I last saw them. S. alba x fragiHs (S, viridis, Fr.), two trees of 

 some age by the rivulet, Edmondsham. This is new to the 



