THE GENUS RADERMACHERA HASSK. 333 
KEY TO THE SPECIES. 
Calyx strongly longitudinally ribbed ; leaves pinnate 1 . II. coriacea 
Calyx smooth, not ribbed; leaves various. 
Leaves simply pinnate , 2. R. elliptica 
Leaves bi-ternate 3. R. bitemata 
Leaves bi- or tripinnate. 
Corolla 4 to 6.5 cm long. 
Corolla campanulate, usually broadly so. 
Flowers about 6 cm long 4. R. elmeri 
Flowers 4 to 4.5 cm long. 
Leaflets obtuse, or shortly and obtusely acuminate 5. R. fenicis 
Leaflets slenderly long-acuminate 6. R. acuminata 
Corolla tubular, 5.5 cm long, the limb spreading 7. R. palawanensis 
Corolla 3 cm long or less. 
Raeliises of the panicles and leaves not lenticellate; flowers 2.5 to 3 cm long. 
Panicles pubescent 8 . R. pinnata 
Panicles glabrous 8. R. pinnata glabra 
Kachises of the panicles and leaves usually strongly lenticellate; corolla 
less than 2 cm long 9. R. mindorensis 
1. Radermachera coriacea sp. nov. 
Arbor glabra; foliis pinnatis, 20 ad 30 cm longis; foliolis 5, coriaceis, 
supra nitidis, oblongis vel elliptico-oblongis, 7 ad 14 cm longis, basi acutis, 
apice obtusis vel obscure obtuseque acuminatis, marginibus recurvatis ; 
floribus 4 cm longis; calycibus 1.8 cm longis, fissis, valde longitudinaliter 
costatis, angustatis; fruetibus 1G cm longis. 
A tree, glabrous throughout. Branches terete, brown, densely lenticel- 
late. Leaves pinnate, 20 to 30 cm long : leaflets 5, oblong or elliptical- 
oblong, 7 to 14 cm long, 3 to 4 cm wide, firmly coriaceous, the upper 
surface very shiny, the lower slightly paler and somewhat shining, densely 
punctate-glandular, the base acute, the apex obtuse or shortly and ob- 
scurely blunt-acuminate, the margins rather strongly recurved; nerves 
about 13 on each side of the midrib, anastomosing, slightly more distinct 
than are the rather lax reticulations ; petiolules of the lateral leaflets about 
1 cm long, that of the terminal leaflet 2.5 cm long. Panicles at least 15 
cm long. Calyx 1.8 cm long, narrow, strongly longitudinally costate with 
5 or 6 ridges, cleft down one side nearly to the middle, 3-toothed at the 
apex. Corolla 4 cm long, the tube rather narrow, slightly enlarged above, 
the lobes about 1 cm long, obtuse. Fruit 16 cm long, the valves 5 to 7 
mm wide, shining, coriaceous, glabrous, blunt or acuminate at the apex; 
seeds unknown. 
Luzon, Province of Tayabas (Principe), Baler, Merrill 1009, September, 1902, 
N. v., Bibit parang. 
A very characteristic species, not only in its simply pinnate leaves and very 
coriaceous leaflets, but also in its cleft and strongly ridged calyx. It is the only 
known Philippine species possessing the latter character. 
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