Scientific Name:
Polystichum luctuosum
( syn.
P. tsus-simense
)
Pronunciation:
puh-LISS-tih-kum LUCK-to-oh-sum
Common Name:
Korean rock fern
Family Name:
Dryopteridaceae
Plant Type:
Fern, Indoor foliage plant
Key ID Features:
Fern 30-45cm tall, fronds bipinnate, upright, dark green upper surface, olive green lower surface, black veins; stipe grooved, brown-black with usually very dark and narrow scales; pinnae lanceolate, finely divided, glossy with spiny-toothed margins; indusia large and persistent.
Habit:
Arching
Form:
Vase
Texture:
Medium - fine
Mature Height:
0.2 - 0.4m
Mature Spread:
0.3 - 0.6m
Growth Rate:
Moderate
Origin:
S.E. Asia / Japan / China
Hardiness Rating:
Zone 6: (-23 to -18 °C)
Exposure:
Part sun/part shade, Filtered shade, Deep shade
Soil/Growing Medium:
Acidic, Humus rich, Well-drained
Water Use:
Low
Landscape Uses:
Accent plant, Alpine, Container planting, Ground cover, Group or mass planting, Mixed shrub border, Rock garden, Small garden/space, Summer interest, Woodland margin
Additional Info:
Leaf Morphology:
Form:
Compound, Fern-like
Arrangement:
Basal
Texture/Venation:
Surfaces:
Glabrous
Compound Leaf:
Bipinnate
Colour in Summer:
Dark-green, Purple
Colour in Fall:
Green
Shapes:
Lanceolate, Oblong, Ovate
Apices:
Mucronate
Bases:
Oblique (uneven)
Margins:
Dentate
Inflorescence Type:
Flower Morphology:
Colour (petals):
No flowers
Flower Time at Peak:
Fruit Type:
Sporangium (spores)
Fruit Colour:
Brown
Fruiting Time:
Apr, May
Additional Info:
sori initially white, then turning black
Bark or Stem Colour:
Additional Info:
no above ground stem
Organ Modifications:
Rhizomes
Propagation:
Spore
Maintenance:
Low
Pest Susceptibility:
(Pest resistant, Disease resistant)
