154 
ERICACEAE. 
Key to genera. 
1 Shrub 
erb ls a 5. Pyrola. 
2. Petals distinct ... ies 4. Clethra. 
Corolla gamopetalous ... 3. 
3. Anthers spurred a 4. 
Anthers without basal spurs vat ... 3. Rhododendron. 
4, Flowers racemose i sed eec S Pieri 
Flowers umbellate wks iis e. 2. Enkianthus. 
1.—PIERIS. 
Key to species. 
Leaves oval, enti e. — l. evalifolia. 
Leaves linear lancelétó; serrate es 2. Swinhoei. 
l. P. ovalifolia, D. Do»; Clarke in Hook. t Fl. Brit. Ind. iii. 
On top of the White Cloud hills, ey ; North 
River. = white, A pril. 
2. P. Swinhoei, Hemsl. Enum; PL China, ii. 17. Swatow Distr. 
Fl. ieam eoloarod. April. ; 
2.—ENKIANTHUS. 
1. E. pannie Lour. ; Benth. Fl. Hongk. 200. dor mae 
the hills, Hongkong ; top of the Phoenix Mt. an 
near Chaochaufu. Fl. pink, February. 
3.—RHODODENDRON. 
Key to species. — 
I. Im wee iis ey er 2. 
aves hirsute o y 7 
2. Leaves white binih with reticulate 
gs 3. 
Lente: green on 1 both sides : 
3. Leaves acute... as G c. L Farrera, 
Leaves very obtuse... see ven: 2; Pordi 
4. Leaves acute at base .. ne ots 5. 
Leaves obtuse at base . wis e. 3. ovatum. 
5. Pedicels hairy . tri site e. 4. Westlandit. 
Pedicels glabrous. - Kea ids 6. 
6. Leaves obtuse at apex ... vi ... 5. Simiarum. 
Leaves acute .. 6, Henryi. 
7. Leaves more than 4 inches long .. 7. Championae. 
Leaves less than 2 inches long i 8. 
8. baer tube cylindric, narrow .. 8. Mariae. 
rolla funnel-shaped .. ei 9 
b Adult bikinis shiveum Dtm. a e 
' Adult leaves hairy beneath ... e. 9. indicum, 
