251 149 
Prodrom. III, p. 32; Trimen Flora of Ceylon I, 1894, p. 151; R. apienlata 
BI. Fl. Jav. I, 91 et Mus. Bot. 134; Wight Ill. 4 209; Kurz For. FI. Brit. 
Burm. J, 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 Arn. 
3. €. Candolleana Arn. in Annals of Nat. Hist. 1, p. 353; Bl. Mus. 
bot. 143; Wight Icon. t. 240; Bedd. Flor. Sylv. Anal. Gen. t. 13, fig. 5; 
Mig. Fl. Ind. Bat. I, p. 590; Brandis For. Fl. 218, I, 448; Hooker f. Fl. 
Brit. India Il, p. 438; Theobald in Mason: Burma, its people and produc- 
tions, vol. II (1883), p. 481; Schimper Indo-Malay. Strandflora p. 94, t.1V, 
V, et in Engl. und Prantl Nat. Pflanzenfam. Ill, 7, p.52; G. Karsten in 
Bibliotheca Botanica Heft 22 (1891) p. 10, t. III (fig. bona), IV, IX; Koor- 
ders en Valeton, Boomsorten van Java, Bijdrage n. 4 (1896), p. 284. — 
C. timoriensis D.C. Prodr. III; C. lucida Mig. Suppl. Fl. Ind. Bat. 324; 
Boerlage in Teysmannia VI, 165. 
Schimper |. c. p. 36 and Pflanzengeographie (1898, p. 431) states 
the occurrence of negative geotropical aérial roots in Ceriops Candolleanu 
like those of Sonneratia acida and Avicennia officinalis. 1 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 
aérial roots. 
Abundant. in the tidal-forests throughout the explored area (all round Koh 
Chang; Klung; Koh Chick; Lem Ngob; 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. €. Roxbarghiana Arn. in Annals of Nat. History 1, p. 363; Mig. 
F}. Ind. Bat. J, 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 Prantl Nat. Pflanzenfam. III, 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. Zippelianu Bl. Mus. 
bot. 143; C. deeandra Theobald in Mason: Burma, its people and pro- 
ductions vol. Il (1883), p. 480; Rhizophora decandra Roxb. Hort. Beng. 
36; Wall. Cat. 4875; Rh. glomerulata Herb. Zipp. 
C. Candolleanu and Roxburghiana are closely allied. The most im- 
