Mr Lindsay's Report on Open- Air Vegetation. 413 



Mandragora vernalis. 

 Muscari Arg^ei. 



„ Szovitzianum, 

 Eanunculus amplexicaulis, 

 Soldanella montana. 

 Trillium grandillorum. 

 Primula Cashmeriana. 



Primula Clusiana. 



„ ciliata and varieties, 



,, decora. 



,, iutegrifolia. 



,, rosea. 



„ Wulfeniana. 



Of the forty spring flowering plants whose dates of 

 flowering are annually recorded to the Society, twelve 

 came into flower during the month, thus completing the 

 list. 



31ay. — During May slight frost occurred on three morn- 

 ings, the total amount registered being 4°, while for last 

 May a total of 17° were recorded. The lowest readings 

 took place on the 2nd, when the thermometer fell to 30"; 

 13th, 35°; 16th, 32°; 20th, 34°; 27th, 30° The highest 

 morning readings were on the 4th, 55°; 6th, 54°; 7th, 60°; 

 17th, 55°; 18th, 54°. The first week was mild and genial, 

 after which cold easterly winds and heavy rains were pre- 

 valent till the end of the month. Despite the ungenial 

 nature of the weather experienced, the foliage of forest 

 trees and shrubs has come rapidly forward. On our dry 

 soil the drenching rains have done much good in assisting 

 deciduous trees and shrubs to develop clean and luxuriant 

 foliage. By the end of the month a good many ornamental 

 trees and shrubs were in flower, all of which are fully up 

 to the average as regards quantity and quality of blossom. 

 The Horse Chestnut, in particular, has not been so richly 

 flowered for several years, having been uninjured b}'- frost ; 

 the flowers are large and fully developed. The various 

 species of Prunus, Pyrus, Rhododendron, Azalea, Magnolia, 

 Lilac, single white Hawthorn, and Laburnum, also pre- 

 sented a rich appearance. Hardy bulbous plants generally 

 have flowered well; the earlier kinds, however, are not 

 forming seed so freely as they usually do. 



The Rock Garden was very attractive, owing to the large 

 number of plants in bloom throughout the month ; 253 

 distinct species and varieties of hardy herbaceous and 

 alpine i)lants came into flower, as against 178 for the same 

 month last year. The following were amongst the most 

 interesting, viz.: — 



TRANS. BOT. SOC. VOL. XVI. 2 E 



