CRAIB—DIDISSANDRA AND ALLIED GENERA, 265 
rhododendron forest, in side valleys of the Mekong. Plant of 
6-12 inches. Flowers deep orange. G. Forrest, 5095! FI. et 
Fr, July 1905. 
Mekong-Salwin divide. Lat. 28° 12’ N. Alt. 10,000 ft. 
Shady situations on rocks and trees in side valleys. Plant of 
12 inches. Flowers pale orange-yellow with brown markings. 
G. Forrest, 14,189! Fl. and Fr. July 1917. G. Forrest, 14,967 ! 
Fr. Sept. 1917. 
Mekong-Salwin divide. Doker La. Lat. 28° 20’ N. Alt. 
10,000 ft. In shady forests, on trunks of trees. Plant of 6-10 
inches. Flowers deep orange, spotted dull purple. G. Forrest, 
16,879! Fl. Aug. 1918. G. Forrest, 17,262! Fr. Oct. 1918. 
12. B. Forrestii, Craib in Notes Roy. Bot. Gard. Edin., xi, 
p- 237 (1919). 
Yunnan. Shweli-Salwin divide. Lat. 25°30’N. Alt. 8000— 
10,000 ft. Moist shady moss-covered rocks. Plant of 4-7 
inches. Flowers pale rosy-purple, lined deeper, with a tinge of 
yellow on lip. G. Forrest, 16,096! Fl. et Fr. Sept. 1917. G. 
Forrest, 17,552! Fl. et Fr. June 1918. 
Shweli Valley. Lat. 24° 50’ N. Alt. 5000-6000 ft. On 
trees and rocks in shady situations. Plant of 3-6 inches. G. 
Forrest, 7985! Fr. May Ig12. 
To this species may also belong Ward, 1888, from Upper 
Burma. Firs. purple, throat of corolla striped and mottled with 
white on lower half. On wet rock slabs, in deep shade of forest 
and gullies or in river bed. Valley of Naung-chaung. 
13. B. Mairei, Craib in Notes Roy. Bot. Gard. Edin., xi, p. 239 
Ig19). 
Didissandra saxatilis, Lévl., Cat. Pl. Yunnan, p. 123, et fig. 
26, p. 124, non Hemsl. 
Yunnan. Tong-tchouan, 2600-2700 m., Maire, 210! 213! 
285! 7455! et sinenum.! Ta-hai, 3000 m., Maire! 
904914. B. elegantissima, Craib, comb. nov. 
1.003 Didissandra elegantissima, Lévl. et Van. in Compte Rend. 
Ass. Fr. (1905), 1906, p. 425; Lévl., Fl. Kouy-Tcheou, 
p. 182, excl. syn. 
Didymocarpus elegantissima, Lévl. in Compte Rend. Ass. Fr. 
(1905), 1906, p. 428. 
Kouy-Tcheou, Pin-Fa, Cavalerie, 239! Ton-chan, Cavalerie, 
2686 ! 
Under number 2686 are two specimens, on each of which 
