famed 
220 
A. Thwaitesii, Hook. f. in Bot. Mag. t. 4918. In bamboo 
groves south-west of Wongneichong village, and in the 
clefts of rocks on the north face of Mt. Nicholson, Hong- 
kong; Lantao Island, Hongkong New Territory. F 
purple or chocolate-coloured, March. 
PIPERACEAE. 
Key to genera. 
Flowers shortly stalked 
- Flowers sessile 
ee ait te 
oO 
Leaf about equal i in length to its petiole 
Leaf many one longer than c prse: 
Spikes involucra P 
Spikes naked 
Woody climber 
Spikes hardly broader than the peduncle 
Spikes three times as broad as. the 
peduncle ; 
1.—-SAURURUS. 
MP 
S. Loureiri, Deene. ; DC. Prodr. xvi. 1. 239. 
watercourses, Taitamtuk, Hongkong ; Swatow district ; 
West River above 
on mu anks of cheeks, Canton ; 
Shiuhing. Fl. white, May. 
2.—HOUTTUYNIA. 
. H. cordata, Thunbd.; Benth. Fl. Hongk. 334. Damp shady 
2. 
3. 
Gymnotheca. 
Saururus. 
Houttuynia. 
4. 
5. 
Piper. 
. Peperomia, 
Piper. 
Grassy banks of 
places p dine "Hongkong ; wet courtyard of the White 
Cloud monastery ; West River ; ; Lofoushan. Fl. white, 
Ms. Decenibér. 
3.—GYMNOTHECA. 
Fl. white 
G. ien eem ; Hook. Ic. Pl. t. 1873. 
August. 
4.—-PIPER. 
Key to species. 
1. Leaves eee beneath _..... ove 
Leaves glabrou es 
2. Leaves very obliqualy semicordate ... 
Leaves deeply, evenly cordate oes 
3. Leaves gradually acuminate ... asi 
Leaves suddenly acuminate... e 
4. Leaves obtuse at oe xi Eus 
Leaves cuneate at base Üs is 
no orm 
prp 
Lienchow River. 
2. 
3. 
puberulum. 
. Sinense. 
sarmentosum. 
Matthewii 
Hancei. 
