1920] Ridley : New & Rare Malayan Plants. 151 



A. officinalis, and ^4. alba. In the field however, it is clear 

 that there are more than these 2 species. 



68. Avicennia officinalis, L. 



Is a common species with obovatc round tipped leaves, 

 very nearly glabrous, and A. alba has lanceolate p>ointed 

 leaves which dry black and are white beneath. Griffith des- 

 cribed in Notul. iv, p. 189, a distinct plant A. intermedia 

 which appears (as Griffith suggests) to be a hybrid between 

 these two species. It has obovate to lanceolate leaves, blunt, 

 pale puberulous beneath. Fruit rather small, cordate ovoid, 

 glaucous. It occurs at Malacca, Pulau Jawa (Griffith). 

 Selangor, Klang (Watson). Dindings, Pangkor (Scorte- 

 chini) . 



69. Avicennia sphaerocarpa, Stapf (ined) . 



Is a small tree. Leaves elliptic narrowed to the tip or 

 round, the base narrowed, whitish beneath, 3 in. long, 1-5 

 in. wide, petiole winged above '25 in. long. Inflorescence 

 axillary of 2-3 or more flowers, terminal on peduncles • 30- 

 •75 in. long, pubescent. Calyx lobes oblong ciliate, silky 

 • 15 in. long. Corolla I have not seen. Fruit ovoid, round 

 subglobose, not beaked • 75 in. long. 



This so far as I know only occurs in the Malay Penin- 

 sula in Penang where Curtis collected it at Sungai Penang ; 

 but it also occurs in Siam, the Philippines and China. It is 

 a very distinct plant in the small round not beaked fruit and 

 smaller leaves. 



70. Avicennia lanata, sp. nov. 



Is a new and distinct species, to which my attention 

 was called by Mr. J. G. Watson, who has been studying the 

 species of Avicennia in the Malay Peninsula and made 

 careful notes of the differences in the species. To a certain 

 extent it has the habit of A. officinalis, but branches and 

 leaves beneath are distinctly yellow tomentose. I take the 

 description below mainly from his notes. 



A large tree. Leaves obovate blunt closely yellow 

 tomentose beneath, glabrous, shining above, ners'es 4 pairs, 

 3 in. long 1 • 25 in. wide ; petiole wrinkled, pubescent • 5 in. 

 long. Flowers in cymose heads, in threes in a compound 

 cyme, axillary peduncle "5- -75 in. long, yellowish, tomen- 

 tose. Bracts densely tomentose. Calyx-lobes tomentose 

 outside. Corolla glabrous inside, densely hairy outside. 

 Anthers dorsifixed elliptic filaments about the same length. 

 Ovary light green, glabrous but surrounded at the base by 

 dense tomentum. Style bifid, very short, brown, lobes 

 erect. Fruit ovoid not beaked • 5 in. long tomentose. 



Singapore : River Valley Road (BurkiD and Watson 

 No. 3793, 3797). Pahang, Kuantan : (Watson 2767). 



Mr. Watson notes that while Singapore specimens 

 attain a height of 80 ft., trees from the coast of Pahang 

 are small and stunted and there he has never met an example 



