178 
CONVOLVULACEAE. 
Key to genera. 
l. Leafless edes y e bt Se 159, Geena: 
Stem lea 2. 
2. Prostrate. creeping herb with ‘reniform 
leaves and minute flowers 8. Dichondra. 
Erect or uxor. pan or with large 
owers 
3. Flowers in long raceme 7. Porana 
Flowers in axillary Syed or solitary... 4. Ipomoea, ete. 
1.—EEYCIBE. 
1. E. obtusifolia, Benth. Fl. Hongk. 236. Mt. Victoria and 
Mt. Parker south, Hongkong. Fl. white, June. 
2.—ARGYREIA. 
LA = i pu f. Fl. Brit. Ind. iv. 185. Naturalised, 
. Hong 
3.—LETTSOMIA. 
For key to species see Ipomoea. 
ne Chalmersii; Hance in Journ. Bot. 1878, 230. Sanning ; 
ingushan, near Chaokingfu, West River. Fl. white, 
September 
. L. Championi, Benth. et Hook. f.; Argyreia Championi, Benth. 
Fl. Hongk. 236. North side of Victoria Peak, Hongkong ; 
F 
— 
bo 
sd oe Hongkong New Territory. FI. purple, 
October. 
4.—IPOMOEA. 
Key to species of Erycibe (No. 1), Argyreia (No. 2), Lettsomia 
NS be Ipomoea (No. 4), Convolvulus (No. 6), and Evolvulus 
. Léaves entire. en 2. 
^. Leaves lobed or compound. Todi 20. 
2. isse boatshaped, persistent ... 1. J. pileata. 
cts leaflike, small or none... 3. 
3. Water Laue 25 2. I. aquatica. 
J 4. 
4. abe. narrowed into the petioles 30. 
_ Leaves sagittate or cordate - 
5. lee shining white ants e. Lettsomia Chalnersi 
eaves glabrous el pce 
t 
S 
E 
dH 
Ic] 
un 
rA 
Lettsomia Championi 
Leaves glabrous ... Sd s. 0 KÉrycibe uie Ae 
A Leaves Sagittate oe eee oe 
ves cordate mr ee CE a too fee 
