446 LeaFLeTs OF PHILIPPINE BOTANY [Vor. II, ART. 28 
Key to the Philippine species of Rubus. 
Leaves simple. 
Herbaceous creeper. 
1. A. pectinellus. 
Branched shrubs. 
Leaves without distinct lobulations. 
Leaves strigose beneath; petals none or very 
minute; twigs tomentose, provided with tack 
shaped glandular hairs. 
2. R. mearnsü. 
Leaves glabrous or only the nerves beneath 
strigose; twigs not tomentose, without gland- 
ular hairs. 
Petals none; calyx densely tomentose; 
stipule entire; stamens and pistils 9 mm. 
long. 
3. R. benguetensis. 
Petals present; calyx cinereous; stipule 
. pectinately lobed; stamens and pistils 
6 mm. long. 
4. R. brevipetalus. 
Leaves tomentose beneath; petals present, 
comparatively large. 
Leaves pubescent above; stipules toothed 
or laciniate. 
5. R. zambalensis. 
Leaves glabrous above; stipules entire. 
6. R. luzoniensis. 
Leaves more or less with distinct lobulations. 
Berry red; powerful climber; leaves submem- 
branous; flowers less than 2 cm. broad with 
calyx not exceeding 12 mm. in length. 
T. R. moluccanus. 
Berry red; rambling shrub; leaves coriaceous; 
flowers 3 cm. broad and with a 2 cm. long 
calyx. 
