Mr Sadler's Report on Open-Air Vegetation. 231 



Rohmsoniana, Anclrnsace Larjgcri. During the month thefollo'oiug 

 species and varieties of Helh'horm were in flower : — UelJehorus 

 albicans major, H. angustifoliiis, H. ahcJiasicus, H. jmrpiirascens, H. p. 

 minor, H. orientalis, H. viridis, H. atroruhens, H. olympicus, H. o. 

 alhus, H. guftafus. The species and vars. of this interesting genus 

 of plants are well deserving of more extended cidtivation for winter 

 and spring flowering, as they come into flower early and continue 

 long in bloom. 



Maij 18 SI. — During the month the thermometer never fell to the 

 freezing-point (which fact will bear favourable comparison with last 

 year, when it feU on three occasions below 32°, registering collec- 

 tively 7° of frost), although the night temperatures of the first fort- 

 night were very low — on the 1st, 38°; 2nd, 38°; 3rd, 36°; 4th, 38°; 

 5th, 37°; 8th, 38°; Gth, 39°; 10th, 33°; 11th, 35°. The month began 

 with what Solomon calls "a continual dropping in a very rainy 

 day," and north-east winds. From the 12th to the end of the month 

 the temperatures were high, and accordingly vegetation grew very 

 rapidly. Upwards of 150 species and varieties of plants came into 

 flower during the month in the Rock Garden, which was well worthy 

 of a visit by all those interested in Alpine and herbaceous plants. 



June 1881. — During the month the thermometer did not fall so 

 low as the freezing-point at the Garden, although in some parts of 

 Scotland it fell several degrees below it. The lowest readings were 

 on the 6th, 38° ; 7th, 35° ; 8th, 37°; 9th, 34° ; 10th, 38° ; 16th, 

 38° ; 24th, 36° ; 28th, 38°. These low temperatures checked the 

 growth of plants and prevented the fertilizing of the flower, but the 

 warm days in a measure counteracted the efiect, and vegetation pro- 

 gressed steadily — thanks to showers, dews, and almost daily sim- 

 shine. Though late, the show of hardy spring flowers, and 

 especially those of an alpine character, was really fine ; and, not- 

 withstanding the damage done to vegetation by the last severe 

 winter, it is seldom that such a large amount of blossom is seen as 

 we had during the month. 



Since last month, 221 species and varieties of plants came into 

 flower in the Rock Garden, making a total of 484 for the season, as 

 compared with 581 at the corresponding date last year. Amongst 

 them were the following : — Saxi/raga xfyramidalis, S. Nepalenais, 

 S. Wilhommiana, Meconopsis simplicifolia, M. aculeafa, Erigeron 

 Roylei, Veronica Guthriana, Fritillaria KanDschatica, Cornns cana- 

 densis, Linncea borealis, Ixiolirion montanum, Symphiandra WaiTieri, 

 Salix Sadler i, Genista scoparia pendida, Rosa pyrenaica, Chryso- 

 hactron Hookeri, Androsace sarmcntosa, Scdum Kamschaticum, 

 Hypericum Bursen, Orchis foliosa, Cyjiripedium spectahile, Chamce- 

 batia foliolosa, Lilium colcliicum, and Morina Wallichi. 



July 1881. — The lowest readings of the thermometer during the 



