50 
P. kypoleuca. 
P. siu/iatrana. 
Sect. I, Monoon. Ovule solitary, usually basal, erect. 
Flowers from the axils of the leaves or of fallen 
leaves, not from the trunk. 
Flowers solitary. 
Leaves under 5 in. in length (7 in. in P. 
Sumatraua), more or less lanceolate. 
Leaves not glaucous beneath ; petals 
ovate, acute ... ... LP. dwmosa. 
Leaves very glaucous beneath ; petals 
linear-oblong, obtuse. 
Ripe carpels smooth ... 2. 
Ripe carpels vertically ridged ... 3. 
Leaves over 5 in. in length, not glaucous. 
Flowers axillary. 
Petals more or less narrowly lan- 
ceolate. 
Leaves ovate-iauceolate, gla- 
brous ; ripe carpels oblong, 
blunt at each end 
Leaves oblong to obovate-ob- 
long, more or less pubescent ; 
ripe carpels elliptic, mu- 
cronate ... ... 5. 
Petals oblong-elliptic, slightly 
obovate, 1'3 to 2' 25 in. long ... 6 
Flowers terminal ; petals ovate-elliptic, 
1 to 125 in. long ... ... 7 
Flowers solitary or in pairs ; ripe carpels little 
more than '25 in. long. 
Flowers *4 in. in diam. ; petals broadly 
oblong-ovate, obtuse ... 
Petals 1'5 to 2 in. long, lanceolate -ob- 
long ; leaves narrowly lanceolate- 
oblong or elliptic-oblong #t . 
Petals *85 to I"5 in. long, broadly 
lanceolate or oblanceolate ; leaves 
oblong-lanceolate to ovate-elliptic, 10 
Flowers in pairs ; petals obovate-oblong, 1 in. 
long : ripe carpels ovoid ; 65 in. long ... 11 
Flowers always in fascicles or cymes, axillary 
or from the branches below the leaves ... 12 
Flowers in fascicles from the young branches 
4. P. anda manica. 
P. magnoliaeflora. 
. P. macrantha. 
. P, pulchra. 
8. P. Kunstleri, 
9. P. Scortechinii. 
. P. Jenkinsii. 
P. Hookeriana. 
P. simiarum. 
299 
