Rhaphidophora, IN INDOCHINA
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publication ID |
https://doi.org/10.3767/000651915X688416 |
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persistent identifier |
https://treatment.plazi.org/id/03C387E9-8E08-E72B-9C58-FCDBDCDBF887 |
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treatment provided by |
Felipe |
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scientific name |
Rhaphidophora |
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KEY TO THE SPECIES OF THE ENTIRE LEAF BLADE GROUP OF RHAPHIDOPHORA IN INDOCHINA
1. Leaf blade often 18–30 cm wide, oblong-ovate to ovate 2
1. Leaf blade often less than 15 cm wide (except R. hookeri ), lanceolate, elliptic to oblong elliptic................. 3
2. Leaf blade base cordate, symmetrical, spadix 12–14 cm long, pistil without concave stylar region.. R. megaphylla
2. Leaf blade base round, oblique, spadix c. 8 cm long, pistil with concave stylar region........... R. lacduongensis
3. Petiole equal to or longer than leaf blade; leaf blade base round........................................ 4
3. Petiole much shorter than leaf blade; leaf blade base obtuse or acute...................................... 5
4. Inflorescences pendulous from tips of free shoots; young shoots tomentose; leaf blade elliptic, lateral veins parallel, much prominent, abaxially pubescent........ R. hookeri
4. Inflorescences erect from tips of free shoots; young shoots glabrous; leaf blade oblong-ovate to lanceolate, lateral veins not prominent, abaxially glabrous........... R. peepla
5. Stem angled and winged; median leaves on fertile shoots with blade shorter than 15 cm.............. R. sulcata
5. Stem not angled and winged; median leaves on fertile shoots with blade longer than 15 cm...................... 6
6. Lateral veins diverging at 65–70° from midrib......... 7
6. Lateral veins diverging at less than 50° from midrib.... 8
7. Stylar region wider than ovary, hexagonal in cross section; anthers dehiscent by slits at base............. R. bonii
7. Stylar region smaller than ovary, quadrilateral cross section; anthers dehiscent by long slits on its surface............................................. R. tonkinensis
8. Placenta compressed and wide occupying almost the entire ovary; ovules attached elongate axil surface; anther dehiscent by long slits on surface......... R. hongkongensis
8. Placenta slender; ovules attached a base only; anthers dehiscent by short slits at base............. R. chevalieri
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