— 251 - 



Prodrom. III, p. 32; Trimen Flora of Ceylon II, 1894, p. 151 ; R. apiculata 

 Bl. Fl. Jav. I, 91 et Mus. Bot. 134; Wight 111. 1,209; Kurz For. Fl. Brit. 

 Burm. I, p. 447. 



Abundant everywhere over the explored area forming with R. mucronata, 

 Bruguiera gymnorhiza and Avicennia officinalis the bulk of the mangroves or 

 tidal-forests of the coasts. In Koh Chang it is the most common species of the 

 mangroves and seems to be very indifferent to the quality (rocks, mud, sand) 

 and salinity of the ground on which it grows. A moderate sized tree (smaller 

 than R. mucronata) with flowers and fruit in December, January, February, 

 March. 



Area: All Eastern tropical coasts (not in Africa). 



Ceriops Am. 



3. C. Candolleana Arn. in Annals of Nat. Hist. I, p. 353; Bl. Mus. 

 bot. 143; Wight Icon. t. 240; Bedd. Flor. Sylv. Anal. Gen. t. 13, fig. 5 ; 

 Miq. Fl. Ind. Bat. I, p. 590; Brandis For. Fl. 218, I, 448; Hooker f. Fl. 

 Brit. India II, p. 438 ; Theobald in Mason : Burma, its people and produc- 

 tions, vol. II (1883), p. 481 ; Schimper Indo-Malay. Strandflora p. 94, t. IV, 

 V, et in Engl, und Prantl Nat. Pflanzenfam. Ill, 7, p. 52; G. Karsten in 

 Bibliotheca Botanica Heft 22 (1891) p. 10, t. Ill (fig. bona), IV, IX; Koor- 

 ders en Valeton, Boomsorten van Java, Bijdrage n. 4 (1896), p. 284. — 

 C. timoriensis D. G. Prodr. III; C. lucida Miq. Suppl. Fl. Ind. Bat. 325; 

 Boerlage in Teysmannia VI, 165. 



Schimper 1. c. p. 36 and Pflanzengeographie (1898, p. 431) states 

 the occurrence of negative geotropical aerial roots in Ceriops Candolleana 

 like those of Sonneratia acida and Avicennia. officinalis. I have examined 

 a great number of specimens of this species, which is very common in 

 the Gulf of Siam, but I was never able to find even a trace of such 

 aerial roots. 



Abundant, in the tidal-forests throughout the explored area (all round Koh 

 Chang; Klung; Koh Chick; LemNgob; Koh Kong) with the mangroves on muddy 

 and stony ground; a small or moderate-sized tree or a shrub, which bears flo- 

 wers and fruit in December, January, February and March. 



Area: Tropical shores of the Old World. 



4. €. Roxbnrghiana Arn. in Annals of Nat. History I, p. 363 ; Miq. 

 Fl. Ind. Bat. I, 1, p. 591; Kurz Fl. Br. Burma I, p. 448; Hooker f. Fl. 

 Brit. India II, 436; Schimper Indo-Malay. Strandflora (1891), p. 94 et in 

 Engl, und Pran\l Nat. Pflanzenfam. Ill, 7, p. 52; G.Karsten in Bibliotheca 

 Botanica Heft 22 (1891), p. 10, t. Ill (fig. bona) ; Koorders en Valeton Boom- 

 soorten van Java, Bijdrage n. 4 (1896), p. 287. — C. Zippeliana Bl. Mus. 

 bot. 143; C. decandra Theobald in Mason: Burma, its people and pro- 

 ductions vol.11 (1883), p. 480; Rhizophora decandra Boxb. Hort. Beng. 

 36; Wall. Gat. 4875; Rh. glomerulata Herb. Zipp. 



C. Candolleana and Roxbnrghiana are closely allied. The most im- 



