KEY TO THE PHILIPPINE SPECIES OF NEPENTHES
1. Lower leaves with fimbriate margin .................. N. mirabilis
Lower leaves with an entire margin .................. 2
2. Pitchers markedly constricted at their middles ...... 3
Pitchers not markedly constricted at their middles ... 4
3. Mouth of pitcher oblique, ovate ..................... N. burkeii
Mouth of pitcher transverse, elliptic ................ N.
ventricosa
4. Pitchers globose; wings with numerous branching (trifid) fringe
elements ... N. bellii
Pitchers various, but not globose; wings with few fringe elements
... 5
5. Lid with a basal appendage below .................... 6
Lid lacking a basal appendage ......................... 7
6. Leaf apex truncate .................................... N. truncata
Leaf apex acute........................................ N. alata
7. Peristome adnate to the lid below, forming a short plate ...
N.argentii
Peristome not adnate to lid ........................... 8
8. Peristome ribs prominent, higher than 1 mm, with extended teeth
internally to 3 mm ..... N. petiolata
Peristome ribs not prominent, as high as wide ...... 9
9. Leaf petiolate ....................................... N. alata
Leaf tapering gradually to base, to discernible petiole.. N.
merrilliana
N.merrilliana, N. truncata and N. petiolata all have somewhatr blunt
leaf tips.
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Matthew Jebb,
School of Botany,
Trinity College Dublin, E-mail: mjebb@tcd.ie
Dublin 2, Tel: +353-1-608 1421
IRELAND. Fax: +353-1-608 1147
Home Phone: +353-1-287-4184
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