Selliguea heterocarpa

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Selliguea heterocarpa

Distribution

Asia-Tropical: East Malesia: present
Throughout Malesia, but rare inEast Malesia.

Morphology

3. Small forms with almost rounded, deeply sunken sori, often on almost linear fertile fronds (mainly from Sumatra and Peninsular Malaysia) have been described under the names Polypodium papilligerum and P. morgani; they also have been confused with Selliguea stenophylla. 2. Plants from Sumatra have more deeply sunken sori, on the upper surface forming broadly flat-topped ridges, with steep sides sharply set off from the flat top. This form has been described as Selliguea lima. 1 Selliguea heterocarpa has very often been confused with S. lateritia, with some consequential nomenclatural confusion. However, the two species are clearly distinct and differ in the following aspects:
heterocarpalateritia
rhizomeshort-creepingelongated
rhizome scaleslight dull brown, acumen wide, marginatedark, often reddish, subulate, not marginate
frond basetaperingnot tapering
frond colour (dry)dull brownoften tinged with red
coenosoriuninterrupted, deeply sunkenoften interrupted, shallowly sunken


The shape of the lamina base is in most cases characteristically tapering in S. heterocarpa, with a wedge-shaped part more or less sharply set off as some sort of bottleneck.

Citation

J. Sm., Hist. Fil. 1875: 102
C. Presl, Epim. Bot. 1851: 146
Blume, Fl. Javae Filic. 1829: 125
Alderw., Malayan Ferns. 1917: 406
Alderw., Malayan Ferns. 1917: 384
Backer & Posth., Varenfl. Java. 1939: 198
Ching - in Bull. Fan Mem. Inst. Biol. 1941: 239
Kato & Price - in Acta Phytotax. Geobot. 1990: 72
Hovenkamp - in Blumea. 1998: 68
Tardieu & C. Chr. - in Fl. Indo-Chine. 1941: 490
Copel., Fern Fl. Philipp. 1960: 509