PHILIPPINE ERICACE^. 379 
4, RHODODENDRON Linn. 
Leaves acuminate or acute. 
Leaves and branches densely appressed-hirsute-setose L R. sulscssile 
Leaves and branches glabrous, or at most only lepidote. 
Flowers 3 cm long or less. 
Flowers 1.5 to 2 cm long, red; leaves 6 cm long 2. R. apoanum 
Flowers 3 cm long, yellow; leaves 8 to 10 cm long 3. R. xanthopciaJum 
Flowers 3.5 to G cm long. 
Leaves very densely brown-lepidote beneath; flowers tubular, crimson, 
about 5 cm long 4. R. nortonae 
Leaves glabrous beneath or with scattered lepidote scales only. 
Ovary rather densely hirsute 5. R. kochn 
Ovary glabrous. 
Corolla white, 3.5 to 4 cm long; leaves sharply acuminate. 
G. R. schadenhergii 
Corolla red, 5 to G cm long; leaves acute or slightly acuminate, dull. 
7. R. spcctahile 
Corolla yellow, 4.5 to 5 cm long; leaves acute or slightly acuminate, 
rarely obtuse, shining 8. R. dementis 
Leaves obtuse, rounded, or emarginate. 
Flowers 3 to 4.5 cm long, white. 
Flowers 3 cm long, subcampanulate; leaves usually 2.5 to 4.5 cm long, rarely 
5.5 cm in length 9* ^ ^^^«^*» 
Flowers 4 to 4.5 cm long, infuudibuliform; leaves G to 8 cm long. 
10. R. mindanaense 
Flowers 4 cm long, the corolla tubular, slender; leaves 4 to 6 cm long. 
11. R. copelandi 
Flowers 2 to 2.5 cm long, red. 
Flowers 2.5 cm long, campanulate. 
Leaves oblong-obovate or oblong-oblanceolate, 2.5 to 5.5 cm long. 
12. R. curranii 
Leaves obovate or orbicular-obovate, rarely oval, 2.5 to 5.5 cm long. 
13. R. whitcheadii 
Flowers 2 cm long, tubular; leaves narrowly oblong-obovate. 
14. R. malindangense 
Flowers 1.5 cm long or less. 
Flowers mostly 1.5 cm long; leaves 5 to 9 mm wide, sometimes narrower, 
narrowly obovate-oblong 15- ^- qnadrasianum 
Flowers mostly about 1 cm long; leaves linear-oblong, mostly 2 to 4 mm 
. , 16. R. ros mar ini folium 
1. R. subsessile Rendle in Journ. Bot. 34 (1896) 357; Merr. in Govt. Lab. 
Publ. (Philip.) 29 (1905) 40. . , " . TT T. i.r t. -f 
LU70X District of Lepanto, Mount Data, Whitclicad, in Herb. Mus. Brit. 
ftvpe) ■ Merrill J^GOG : Province of Benguet, Suyoc to Pauai, Merrill 4690; Pauai, 
B«r sk m5 Mearns; Mount Tonglon (Santo Tomas), For. Bur. 5032 Curran; 
Mcarns s. n.; Merrill 4815; Williams 1223, 2001; Elmer 51'99; For. Bur. 11090 
Whit ford; For. Bur. 922 Barnes. 
Widely distributed and very common in the highlands of northern Luzon, from 
1800 to 2,250 m altitude: apparently very closely allied to the Formosan R 
oldhami Maxim. 
