THE GENUS RADERMACHERA HASSK. 333 



KEY TO THE SPECIES. 



Calyx strongly longitudinally ribbed; leaves pinnate h It. coriacca 



Calyx smooth, not ribbed; leaves various. 



Leaves simply pinnate 2. R. ellipUca 



Leaves bi-ternate 3 ^ j,^^,,.,,„^„ 



Leaves bi- or tripinnate. 

 Corolla 4 to 6.5 em 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. 



Rachises of the panicles and leaves not lenticellate; flowers 2.5 to 3 cm long. 



Panicles pubescent 8. ^_ pinnata 



Panicles glabrous 8. i2. pinnata glabra 



Rachises of the panicles and leaves usually strongly lenticellate; corolla 

 less than 2 cm long 9. jf^ mindorensis 



I. 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; fructibus IG cm longis. 



A tree, glabrous throughout. Branches terete, brown, densely lenticel- 

 late. Leaves pinnate, 30 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 3.5 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, sliining, coiiaceous, glabrous, Ijlunt or acuminate at the apex ; 

 seeds unknown. 



Luzon, Province of Tayabas (Principe), Baler, Merrill 1099, September, 1!)02, 

 N. v., Biiit 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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