1916-17.] BOTANICAL SOCIETY OF EDINBURGH 203 



minutely punctulate and the cartilaginous undulate margin 

 is more or less notched and conspicuously punctulate. 

 The upper surface, which in the young leaf is much more 

 densely coated with hairs than is the under surface, — this 

 the consequence of a re volute ptyxis — does not show con- 

 spicuously such coloured bases of its fallen hairs, but 

 vestiges of these hairs may be seen, specially about the 

 midrib. The more or less glandular petiole is a character 

 of mark. In the flower region the following characters 

 are important: — the glandular axis of inflorescence, the 

 glandular pedicels, the 5-lobed corolla glandular outside 

 puberulous inside, the filaments of stamens very finelj' 

 puberulous from base to top of ovary, the rufously glan- 

 dular ovary without hairs though occasionally at base of 

 and on the ovary a few greasy coloured hairs may occur, 

 the style glandular right to the top and there ending in 

 a stigma which is hardly broader than lower part of style. 

 Rh. irroratum was brought into cultivation through 

 the Jardin des Plantes of Paris, where it was raised from 

 seeds sent by Delavay. It flowered for the first time in 

 Britain at Kew in 1893, and is figured in the Botanical 

 Magazine (1894), t. 7361. It has flowered elsewhere since 

 then, and seems to be variable in flower colour. Sir Joseph 

 Hooker wrote of it as " in its present condition the least 

 ornamental species of the genus known to me," expressing 

 the hope that when older its merits would be higher. We 

 have it growing at Edinburgh under Forrest's No. 5851, 

 which, through the dried specimens, does not promise to 

 be much better than Delavay's plant. The form from the 

 Chungtien plateau under Forrest's No. 12,410 is evidently 

 much finer. 



Rhododendron luldangense, Franch. in Journ. de Bot., xii 

 (1898), 257.1 

 Shrub with medium thick branches. Branchlets a j^ear 

 old as much as 5 mm. in diameter, pale green covered with 



^ Fraiichet's description runs : — 



Rh. lukiangeiise, Franch. — Folia jjetiolata, coriacea, utraqne facie 

 glaberrinia, multicostata, e basi attenuata lanceolata, superne breviter 

 aciitata, 13-17 cent, longa, 30-45 mm. lata, penilae Horales diu per- 

 sistentes, extus albo lanatae, oblongae ; ilores 6-8, apice ramorum con- 

 gesti, rubri ; pedicelli 3-4 mm. longi ; calycis glabri segmenta vix con- 



TEANS. BOT. SOC. EDIN. VOL. XXVH. ]5 



