Supplement, $c.] ^ eiemt, onomrpEx. (J. D. Hooker.) 185 
P. 790. 79. D. apuncum. Dele Bot. Mag. t. 6784.—Two very closely allied 
species are confounded under this name. D. ADUNCUM and D. HERCOGLOSSUM, 
agreeing in habit, foliage, inflorescence, and very nearly in flowers, but dis- 
tinguished by the lip, which in aduncum has a glabrous area on the disk, its flowers 
too are paler, the sepals less acuminate, and the arms of the column more notched. 
Untikquite recently the native country of aduncum was unknown, and it was sup- 
posed to be specifically the same as a Chinese plant which Reichenbach described as 
hercoglossum, and which in Veitch's ** Manual ” is cited as a synonym. The lip in 
both is very shortly clawed, Lindley regarded D. aduncum as closely related to D. 
moschatum, but to me it seems widely different. 
The following are the characters of the two species :— . 
79. D. ADUNCUM; flowers pale pink, lip with a broad naked area on the 
pubescent disk.—Sikkim and Bhotan Himalaya, Assam. 
79/1. D. HERCOGLOssuM, Reichb. f. in Hamb. Gartenzeit. xlii. 558, in Gard. 
Chron. 1886, ii. 487; flowers bright rose-red, disk of lip villous all over. D, 
aduncum, Hook, f. Bot. Mag. t. 6784. 
SINGAPORE, Ridley in litt. China. 
79/2. D, FLAVIDULUM, Ridley mss.; stems slender pendulous, leaves lincar- 
lanceolate, racemes on the leafless stems short, bracts subacute, dorsal sepal ovate- 
oblong obtuse, tip thickened, lateral ovate acute deeply keeled from the middle 
l the tip, petals oblong obtuse 5-nerved, mentum large obtuse shorter than the 
Merl sepals, lip ovate-oblong 3-fid beyond the middle, lobes ciliate, midlobe 
thickened, 
SINGAPORE ; at Kranji, in Mangrove swam s, common, Ridley. 
Stems 12-18 in., rather flexnous, soft, internodes about 1 in. Leaves 2}~3 in., 
acuminate with a notch on one side, membranous. Raceme with the slender 
peduncle 4-2 in.; bracts } in.; flowers } in. long; sepals and petals rigid; lip 
“herved, lobes ovate-oblong obtuse.—A very distinct species. Mr. Ridley informs 
me that there are 2 forms of it, one with flowers all yellow, the other with white 
sepals and petals. , 
5L D. connurum. Insert after Ic. Plant. t. 2029. 
P. 731, 82, D.cuwvrATUM. I have examined specimens preserved in spirits 
shor Dr. King (collected by Mr. Lister in Bhotan).- The claw of the lip is not 
appeared. may be traced down the spur, and is as long as the blade; an Cat 
Much rainy a SMA tubercle in the dried specimen is an elongate groove 
weed towards base of the claw, the mentum is more or less laterally com- 
D ecd, rometimes longer than the sepals, The Perak plant doubtfully referred to 
EM is very different, but not in a state for description. 
ul. SIL D, - f; stems terete, leaves 4 by I in. lanceo- 
d acuminate, racemes on leafless ` rend lender few-fid., dorsal sepal and petals 
acute Zone subacute 7-nerved, mentum twice as long as the ovate-oblong sub- 
oboy eral sepals slender spur-like acute, lip large spathulate, claw as long as 
ate M Tenulate limb, with an obtuse oblong reversed callus at the base. 
; at Laru .d , . 
, Stems ke fto narrowed to e eM) is not tuberous, internodes 1 in» $ in. 
i nee bri 7 in.; bracts small, ovate; 
pedicel with ovary DT DE, Te i. Teng, bright orange yellow with 
straight oe each side of the lip towards the base of the limb; mentum nowy 
ing’s Am *scribed from dried flowers and a drawing that will be pu 
unals cf the Caleutta Garden. 
e : KENTROCHILUM, after Hook. f. insert Te. Plant. t. 2030. 
P 2 aaa after Hook. f. insert Ic. Plant. t. 2031. aalt 2092. T 
ing an vu D. HYMEN ok, f. insert Ic. Plant. t. 2032. iere 
wel e earlier D, hymenanthum (Lindl, Gen. & d Orchid. 86), I have named this 
NOPTERUM in the “ Icones Plantarum.” 
