Needle leaf Java fern
Microsorum pteropus "True Needle Leaf"
Needle leaf Java fern
- Extremely narrow ribbon-shaped leaves
- Dense bushy growth habit
- Rather dark green
- Rarely available in trade
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Description
True "Needle Leaf" Java fern is relatively rare in the hobby and very hard to come by in trade. It has extremely narrow strap-shaped leaves that are only 3-5 mm wide and approx. 5-20(-30) cm long. It is a relatively slow grower, which makes it highly suitable for nano aquaria. Often Microsorum pteropus "Taiwan Narrow" is called "Needle Leaf" in the hobby, but it has wider, longer leaves than the true "Needle Leaf".
The vernacular name "needle leaf" obviously is used for (at least) two similar Java fern forms growing to different sizes. However, both forms alike have exceedingly narrow, band-like leaves of a medium to dark green colour with an undulate margin. The midrib is rather thick in comparison with leaf width, and on the underside of the leaf there are dark brown hirsute scales. The distance between the leaves on the rhizome is rather brief, and the roots remain relatively short.
The larger variety is also known under the name M. pteropus "Taiwan" and (erroneously) as "Narrow Leaf" (not identical with M. pteropus "Narrow" from the aquatic plant nursery Tropica). The leaves of adult plants are usually over 5 mm wide and reach a maximum width of around 2 cm and a length of 30 cm.
The smaller variety, also in trade under the name Microsorum spec. (read more)
| Synonyms | Microsorum pteropus ''True Needle Leaf'', Microsorum sp. ''Mini'' |
| Misapplied names | Microsorum brassii |
| Complete botanical name | Microsórum ptéropus (Blume) Copeland |
| Family | Polypodiaceae |
| Genus | Microsorum |
| Difficulty | very easy |
| Usage | Epiphyte (growing on hardscape), Midground, Nano tanks, Foreground, group |
| Growth | slow |
| pH value | 5 - 7 |
| Temperature tolerance | 4 - 30°C |
| Carbonate hardness | 0 - 12°dKH |
| General hardness | 0 - 30°dGH |
| Propagation | Proliferating leaves, Proliferating roots, Rhizomteilung, Splitting, cutting off daughter plants |
| Can grow emersed? | yes |
| Source | Flowgrow |
| Synonyms |
| Microsorum pteropus ''True Needle Leaf'', Microsorum sp. ''Mini'' |
| Misapplied names |
| Microsorum brassii |
| Complete botanical name |
| Microsórum ptéropus (Blume) Copeland |
| Family |
| Polypodiaceae |
| Genus |
| Microsorum |
| Difficulty |
| very easy |
| Usage |
| Epiphyte (growing on hardscape), Midground, Nano tanks, Foreground, group |
| Growth |
| slow |
| pH value |
| 5 - 7 |
| Temperature tolerance |
| 4 - 30°C |
| Carbonate hardness |
| 0 - 12°dKH |
| General hardness |
| 0 - 30°dGH |
| Propagation |
| Proliferating leaves, Proliferating roots, Rhizomteilung, Splitting, cutting off daughter plants |
| Can grow emersed? |
| yes |
| Source |
| Flowgrow |
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