/ 
612 ROBINSON. 
3. Outer bracts of staminate receptacles not or very slightly corniculate. 
4, Leaves pinnately veined; pistillate receptacles peduncled. 
26. EB. whitfordit 
4. Leaves triplinerved; pistillate receptacles sessile or subsessile. 
5. Leaves distinctly acuminate. 
6. Stems glabrous or somewhat pilose at the apex. 
. 7, Stipules large, at least 4 mm long, often much more, 
8. Basal leaf-auricle very strongly developed....:........... 27. H. edule 
8. Basal auricle not or not strongly developed stevia ve 28. H. carinoi 
: 7. Stipules inconspicuous, 1.5 to 2.5 mm long........ 29. EB. angustatum 
6. Stems densely pubescent, at least at the apex. 
7. Mature leaves chartaceous or subchartaceous; teeth on wider side 
rarely as many as 15, 
8. Upper leaves usually greatly narrowed; stipules persistent. 
30. EH. apoense 
8. Upper leaves similar to rest; stipules less persistent. 
31. EB. longifolium 
7. Mature leaves membranaceous; marginal teeth more numerous. 
8. Stem-pubescence retrorse ...c..ccceecccecccceeeceeeseee 32. HB. plumbeum 
8. Stem-pubescence antrorse 1....... 000... ceeeseeeeeee eos 33. EB. contiguum 
5. Leaves not or barely acuminate; stems pubescent. 
6. Leaves not variegated, upper surface with crowded cystoliths, 
7. Venation coarser, on wider side usually continuous, marginal 
teeth about 20............ basco ce scan nope been 34. HB. obtusiusculum 
7. Venation delicate, usually not continuous, marginal teeth usually 
a anne ie Joe ER: AR a Os 35, EF. brongniartianum 
6, Leaves variegated ; upper ‘sutface with scattered cystoliths or none. 
; 36. EF. variegatum 
-. Plants erect, the stems woody or nearly so. 
3. Terminal leaf-tooth short, merely continuing the general outline of the 
leaf-apex. 
4. Leaf serrate nearly to the narrowed base, teeth on wider side usually 
S| Se Re eae ES a Oe A EE 37. E. benguetense 
4. Leaf-teeth above middle, none to 4 on the wider side, which, is not con- 
PraCted AL DASE -5......<..c-ccececscsevteosece pian epsinacescsaeene tem 38. HL. podophyllum 
3. Leaves distinetly acuminate. 
4. Stipules not exceeding 4 mm long. 
5. Pubescence of stem and veins of under surface of leaves appressed; 
marginal teeth almost always 2............ ons dieehnceeaneee 39. FB. halconense 
5. Pubescence longer and more spreading; teeth more numerous. 
6. Veins of wider side 3 or 4, teeth 5 or 6, rarely found below middle 
OF Teak aos aadcoe aaa . 40. BE. sublignosum 
6. Veins of wider side 5 or 6, ‘teath: 9 te. 14, Gehcatheg below middle of 
eM ee a ees Ps Ee SN Sk 41. HE. baruringense 
4. Stipules at least 7 mm (0 «|: A Pn MER: wm 42. FB. integrifolium 
1. Staminate receptacles on long basal or subbasal peduneles...... 43. FE. scapigerum 
1, Elatostema luzonense sp. nov. 
Receptaculis staminiferis graciliter pedunculatis, bracteis corniculatis, 
floribus tetrameris: receptaculis pistilliferis pedunculatis vel sessilibus: 
foliis siccis membranaceis, lanceolatis ad obovatis, basi acutis ad rotun- 
| 
| 
a MM al ae 
_——en 
s 
ea 
. 
