1 | Leaves linear (leaf index 6) |
1' | Leaves broader (leaf index less than 4). |
2 | Leaves shorter than 5 cm. |
2' | Leaves longer than 5 cm. |
3 | Leaves coriaceous, apex obtuse or retuse (Vogelkop Peninsula) |
3' | Leaves membranaceous, tapering to a long apiculum (Sepik region) |
4 | Inflorescence shorter than, or little exceeding the petiole (c. 2 cm or less). |
4' | Inflorescence considerably longer than the petiole (3 cm or usually much longer). |
5 | Stems greatly expanded at the nodes (usually inhabited by ants). |
5' | Stems not markedly expanded at the nodes. |
6 | Leaves sessile, amplexicaul, margin strongly and sharply dentate (E. Papua New Guinea) |
6' | Leaves petiolate, base cuneate or truncate, margin entire. |
7 | Leaves broadly ovate (Moluccas) |
7' | Leaves elliptic-oblong (S. Papua New Guinea) |
8 | Inflorescence pubescent (young shoots also pubescent and hairs ± persisting on mature foliage). |
8' | Inflorescence and mature foliage glabrous (buds and young foliage sometimes pubescent). |
9 | Leaves stiffly chartaceous, teeth sharply spinulose, often ± bullate (Western Highlands Prov.) |
9' | Leaves softly chartaceous, dentations not spinulose. |
10 | Leaves bullate (Morobe Prov.) |
10' | Leaves flat. |
11 | Female receptacle and pedicel bearing several pairs of acute imbricating bracts (Moluccas) |
11' | Female receptacle and pedicel without bracts (or at most small bracts widely spaced) (New Guinea). |
12 | Pubescence of fine, pale, appressed hairs (SE. Papua New Guinea) |
12' | Pubescence of loose, curled, brownish hairs (Vogelkop Peninsula) |
13 | Leaf blade larger than 10 cm. |
13' | Leaf blade shorter than 8 cm. |
14 | Leaf margin entire (Normanby I.) |
14' | Leaf margin dentate. |
15 | Leaf margin spinulose-dentate (Vogelkop Peninsula) |
15' | Leaf margin serrate. |
16 | Leaf base tapering to the petiole, blade narrowly obovate (Rossel I.) |
16' | Leaf base broadly cuneate, blade oblong-elliptic (Vogelkop Peninsula) |
17 | Leaf apex with a slender apiculum (Eastern Highlands Prov.) |
17' | Leaf apex acute or obtuse, without an apiculum (Mt Shungol, Morobe Prov.) |
18 | Inflorescence with the lateral branches crowded on a short peduncle |
18' | Inflorescence a simple or branched cyme with evident internodes separating the branches. |
19 | Leaf blade small, membranaceous (usually under 10 by 3 cm). Inflorescence branches very slender (Torricelli Mts) |
19' | Leaf blade larger (usually over 10 cm long, if not, then coriaceous). |
20 | Male flowers racemosely arranged along the inflorescence branches |
20' | Male flowers cymosely arranged or solitary. |
21 | Flowers 6 mm long at anthesis or longer, densely pubescent (Eastern Highlands & Morobe Prov.) |
21' | Flowers less than 5 mm long (or if 6 mm, then glabrous). |
22 | Leaf margin dentate. |
22' | Leaf margin entire (occasionally some leaves with few teeth near apex). |
23 | Stems greatly expanded at the nodes (usually inhabited by ants) (Central Prov.) |
23' | Stems not markedly expanded at the nodes. |
24 | Dentations of leaf margin sharply spinulose |
24' | Dentations of leaf margin not spinulose. |
25 | Pedicels strong. |
25' | Pedicels delicate. |
26 | Underside of mature leaf pubescent. Inflorescence a few-flowered cyme (Southern Highlands & Milne Bay Prov.) |
26' | Underside of mature leaf glabrous or, if pubescent, inflorescence ± paniculate. |
27 | Leaf blade usually broadly elliptic-ovate, more than 10 cm long, rounded to broadly cuneate base. Pedicels rigid (throughout Malesia) |
27' | Leaf blade usually elliptic, usually less than 10 cm long, base cuneate. Pedicels less rigid (SE. Papua New Guinea) |
28 | Inflorescence of simple pleiochasia. Outer stamens inserted at widest part of the receptacle (Star Mts, Telefomin region) |
28' | Inflorescence of paniculate cymes. Stamens inserted near base of the receptacle (NW. Irian Jaya) |
29 | Undersurface of mature leaf pubescent. |
29' | Undersurface of mature leaf glabrous. |
30 | Pubescence on inflorescence soft, not closely appressed (Southern Highlands & Milne Bay Prov.) |
30' | Pubescence on inflorescence stiffly appressed. |
31 | Leaves acuminate, usually broadly elliptic (throughout Malesia) |
31' | Leaves obtuse, usually narrowly elliptic (Sabah, Celebes, Philippines, Biak I.) |
32 | Leaves stiffly coriaceous, broadly elliptic to subrotund (New Guinea highlands) |
32' | Leaves not as above. |
33 | Inflorescence pubescent. |
33' | Inflorescence glabrous (young inflorescence ± setulose in K. sleumeri). |
34 | Leaves acuminate, usually broadly elliptic (throughout Malesia) |
34' | Leaves obtuse, usually narrowly elliptic (Sabah, Celebes, Philippines, Biak I.) |
35 | Pedicels of male flowers elongated (20-45 mm). |
35' | Pedicels of male flowers shorter than 20 mm. |
36 | Male flowers in separate inflorescences (Irian Jaya) |
36' | Male flowers on lower branches of inflorescences. |
37 | Leaf narrowly elliptic (Chimbu Prov.) |
37' | Leaf broadly elliptic or elliptic (Morobe & Central Prov.) |
38 | Pedicels of female flowers noticeable thickened for c. 10 mm below the receptacle (New Britain, New Ireland) |
38' | Pedicels of female flowers not strikingly thickened. |
39 | Male receptacle 4-6 mm long; anthers kidney-shaped. Leaf rigidly coriaceous. |
39' | Male receptacle 1.5-2.5 mm long; anthers triangular. Leaf not rigidly coriaceous. |
40 | Leaf oblong, apex rounded or retuse with a minute mucro, often 3-whorled (Western Prov., also in Queensland) |
40' | Leaf narrowly elliptic, apiculate, opposite (Sudest I.) |
41 | Leaves oblong, apex and base rounded (Vogelkop Peninsula) |
41' | Leaves elliptic. |
42 | Leaves membranaceous (Sepik region) |
42' | Leaver firmly herbaceous or chartaceous (SE. Papua New Guinea). |