522 
Native of the Island of Luzon, one of the Philippines. O. 
Múngos, Bartl. in herb. Hanke. Herb hardly a hand high, 
erect, suffruticose at the base, and throwing out a few roots 
from the lower part. 
Oblong-leaved Snake-root. Shrub 4 foot. 
4 O. virosa (Roxb. fl. ind. 2. p. 546.) stem suffruticose, 
erect, villous ; leaves ovate-oblong or lanceolate, villous on the 
veins beneath; stipulas ensiform, villous; cymes or corymbs 
terminal, on long peduncles, villous; corolla funnel-shaped. 
%. S. Native of Chittagong and Silhet, on the hills in shaded 
moist places. O. Mangos, Geertn. fruct. 1. p. 264. t. 55.? 
ex Roxb. Corymbs almost globular, with numerous white 
almost sessile flowers, and recurved branches. Urceolus bila- 
biate, surrounding the base of the style. Capsule opening round 
the apex. 
Villous Snake-root. PI. 3 foot. 
5 O. aree’nrea (Wall. cat. no. 6229.) suffruticose; stem 
hispid; leaves ovate, acuminated, tapering at the base, glabrous, 
green above and white beneath; peduncles axillary and ter- 
minal, trichotomous at the apex ; tube of corolla longer than in 
O. villdsa. h. S. Native of Silhet and Chittagong. O., vil- 
lòsa, Wall. but not of Roxb. Peduncles downy. 
Silvery Snake-root. Pl. 4 to 1 foot. 
6 O. marcina’ta (Blum. bijdr. p. 976.) stem suffruticose, 
erect; leaves lanceolate, acuminated at both ends, glabrous, 
except the margins, which are scabrous; stipulas semi-lanceo- 
late, small, acuminated; cymes or corymbs pedunculate, ter- 
minal, almost trifid; corolla funnel-shaped, with an angular 
tube. %.S. Native of Java, on Mount Tjerimai. Allied to 
O. Mingos, but differs in the flowers being larger and in the 
stipulas being subulate at the apex. 
Marginate-leaved Snake-root. P]. 4 to 1 foot. 
7 O. Fascicuta‘ta (D. Don, prod. fl. nep. p. 136.) stem 
suffruticose, erect, branched ; leaves elliptic, acuminated, gla- 
brous above and downy beneath; flowers in terminal fascicles ; 
calycine segments ovate, acute. h.S. Native of Nipaul, in 
moist shaded places, near Suembu. Virécta fasciculata, and 
O. suffruticdsa, Hamilt. mss. Differs from O. Múngos in the 
leaves being downy beneath, and in the flowers being in ter- 
minal fascicles. 
Fascicled-flowered Snake-root. Pl. 4 foot. 
8 O. RuGoOsa (Wall. in Roxb. fl. ind. 2, p. 547.) stems herba- 
ceous, creeping at the base, and ascending at the apex, villous ; 
leaves elliptic-lanceolate, attenuated at both ends, shining, ru- 
gose and rather scabrous above, paler beneath and rather downy 
along the veins; stipulas semi-lanceolate, acuminated ; cymes or 
terminal corymbs pedunculate, bifid or trifid, equalling the 
uppermost pair of leaves. %. S. Native of Nipaul, in forests, 
on Shivapoor and other high mountains near the valley ; and of 
Java, on Mount Gede in woods. Blum. bijdr. p. 976. Root 
consisting of a number of long pink-coloured fibres. Petioles 
villous. Peduncles furnished with 2 subulate bracteas about the 
middle, villous. Flowers white, downy, twin, the one sessile, 
and the other pedicellate. Urceolus 2-lobed. 
Wrinkled-leaved Ophiorhiza. Pl. 4 to 2 feet. 
9 O. pi'scotor (R. Br. in Wall. cat. no. 6232.) leaves ellip- 
tic-oblong, much acuminated, tapering to the base, glabrous, 
green above, and reddish beneath; stems and peduncles downy; 
peduncles terminal, corymbose, trichotomously branched. h.S. 
Native of Penang. O. Mungos, Wall. in Roxb. fl. ind. 2. p- 
547. O. corymbosa, Hamilt. herb. 
Discoloured-leaved Snake-root. Shrub 1 to 2 feet. 
10 O. canr’scens (Blum. bijdr. p. 977.) stems herbaceous ; 
leaves oblong-lanceolate, attenuated at both ends, whitish be- 
neath, and rather downy along the veins ; stipulas broad, short, 
subulate at the apex; cymes on short peduncles, terminal, and 
RUBIACEZ. LXX. Opnioruiza. 
axillary, naked, usually quadrifid ; stamens about equal in length 
to the tube of the corolla. 2. S. Native of Java, on the 
mountains of Seribu, in shady places. Allied to O, rugdsa, but 
is distinguished from it in the cymes being naked. 
Canescent Snake-root. Pl. 4 to 1 foot. 
11 O. rricuoca’rra (Blum. bijdr. p. 977.) stems herbaceous, 
tomentose; leaves on short petioles, ovate-lanceolate, acutish, 
rather downy on the veins beneath; capsules downy ; stipulas 
subulate ; cymes pedunculate, axillary, and terminal, dichoto- 
mous. X4. H. Native of the islands of Java and Nusa-Kam- 
banga. Said to be nearly allied to O. villosa. 
Hairy-fruited Snake-root. Pl. 3 to 1 foot. 
12 O. tonciriéra (Blum. bijdr. p. 977.) stem suffruticose ; 
leaves oblong-lanceolate, acuminated at both ends, hairy beneath; 
stipulas semi-lanceolate, acuminated; cymes pedunculate, ter- 
minal, loose-flowered ; tube of corolla very long, velvety. h. 
S. Native of Java, on Mount Gede, in woods near the top. 
Long-flowered Snake-root. Shrub $ to 1 foot. 
13 O. sancuinea (Blum. bijdr. p. 977.) stem herbaceous; 
leaves ovate or elliptic-lanceolate, acuminated, rather oblique at 
the base, glabrous; stipulas foliaceous, ovate-oblong, bifid ; 
cymes pedunculate, terminal. 4. S. Native of Java, on the 
mountains in shady places. Leaves reticulately veined in the 
dry state; the veins blood coloured, 
Bloody-veined Snake-root. Pl. 4 to 1 foot. 
14 O. necre'cra (Blum. herb. ex D. C. prod. 4. p. 416.) stem 
herbaceous, erect, dark purple, glabrous ; leaves oblong-lanceo- 
late, acuminated, pale beneath; peduncles axillary, clothed with 
rusty down; cymes bifid or quadrifid, having the branchlets 
elongated. 2%.? S. Native of Java. Nerves of leaves pur- 
plish beneath. Stipulas deciduous. 
Neglected Snake-root. Pl. 4 to 1 foot. 
15 O. quaprrriva (Blum. bijdr. p. 977.) stem herbaceous; 
leaves ovate or oblong, acute at both ends, smooth, with simple 
veins; stipulas linear, obtuse ; cymes pedunculate, axillary, and 
terminal, usually quadrifid. 4%. S. Native of Java, ‘in shady 
mountain woods. 
Quadrifid-cymed Snake-root. Pl. 4 to 1 foot. s 
16 O. Jaróxica (Blum. bijdr. 977.) stem herbaceous, radi- 
cant; leaves ovate or oblong-lanceolate, roughish above, an 
downy on the veins beneath; corymbs terminal, pedunculate, 
dichotomous ; corolla funnel-shaped, with a very long tube, and 
having the segments hairy inside. 4%. G. Native of Japan, where 
it was collected by Siebold. 
Japan Snake-root. Pl. 4 foot. 
17 O. prostra‘ra (D. Don, prod. fl. nep. p. 136.) stem pros- 
trate, radicant, downy ; leaves ovate or elliptic, rough above, n 
downy beneath ; calycine segments oblong. %. G. Native y 
Nipaul, at Narainhetty. Virécta? prostràta, Hamilt. mss. Dif- 
fers from O. Múngos in the plant being smaller, and more pubes- 
cent, and in the stems being radicant. 
Prostrate Snake-root. PI. prostrate. 
18 O. romenrésa (Jack, in Roxb. fl. ind. 2. p. 546.) the 
whole plant is clothed with very soft villi; stem herbaceous: 
erect, branched; leaves lanceolate-oblong, finely acuminated, 0° 
longish petioles, villous and hoary underneath, with ree 
veins ; stipulas subulate; cymes pedunculate, terminal. ee 
Native of the islands of Pulo-Penang and Sumatra, on the hills. 
Stem reddish. Petioles villous. Flowers almost sessile. Pe- 
duneles and calyxes tomentose. Corollas white. Urceolus bi- 
labiate, glandular. Very like O. bracteolata. 
Tomentose Snake-root. P]. 1 foot. sh 
19 O. ERuBE’scens (Wall. cat. no. 6233.) stem clothed wit 
rusty down at the top; leaves elliptic-lanceolate, acuminatecs 
tapering at the base, glabrous above, and downy beneath ; sti; 
pulas broad at the base, and cuspidate at the apex ; flowers ter 
