308 MR. HENRY RIDLEY ON ORCHIDEA AND 
Ceratostylis malaccensis, Hook. f., Fl. Brit. Ind., v. p. 826, 
et Ic. PL, t. 2098. 
Appendicula teres, Griff., Notul., iii. p. 359, et Ic. Pl. As. 
t. 332. 
Hab. Malacca: Mt. Ophir, common at 2-4,000 feet ! 
Johore: Batu Pahat! 
Selangor: Near Kwala Lumpur, in the low country! 
Perak: Larut Hills, 3-4,000 feet elevation! (Scor- 
techini ! drawings.) 
Kedah Peak : alt. 4,000 feet! 
Also occurs in Assam, Khasia, Java, Sumatra. 
I am quite nnable to separate the Assam and Javan plants 
from that of the Malay Peninsula. Griffith’s figure and descrip- 
tion of Appendicula teres, upon which Reichenbach apparently 
based his C. teres, would very well suit the peninsular plant. 
Blume’s C. gracilis, as figured and described by Reichenbach in 
the ‘ Xenia,’ l.c., shows no difference. In C. malaccensis, Hook. f., 
the figure in the ‘Icones Plantarum’ certainly looks as if 
intended for a different plant, for it has a lanceolate lip, 
narrower at the apex than at the middle, with three distinct 
ridges and convex, whereas in all that I have seen the lip is 
broadest and thickened at the apex, concave at the base. The 
mentum is strictly scrotiform in my specimens. Scortechint’s 
figures labelled Ceratostylis malaccensis are exactly like the 
plants I have collected. Perhaps the differences between the 
figure in the ‘Icones’ and the common plant are, in part at 
least, due to the former being drawn from dried and perhaps 
crushed flowers, or it may have been an exceptional form. I 
have received a form with very much thicker and shorter stems 
and leaves from Djambi, in Sumatra, the flowers, however, are 
quite similar, even in colouring, to the peninsular form. 
The plant grows, usually abundantly, on trees in the mountain 
districts at a considerable elevation; but I once found it on a 
big fallen tree in dense jungle in Kwala Lumpur, in the low 
country. The stems are dull, dark green. The flowers in 
compact tufts, two or three in each tuft opening at a time. 
They are usually, but not always, more or less pubescent. 
They do not open wide, but the apices of the perianth segments 
separate a little. The sepals and petals are pink, rarely yellow, 
the lip yellowish, with the thickened apex bright chrome yellow. 
The mentum and base of the lip are full of honey. There are 
