Bolbitis heteroclita (尾葉實蕨)

Bolbitis heteroclita is in the genus Bolbitis and family Dryopteridaceae. It is native to Taiwan and China. In Taiwan. It is only distributed in the wild near Nanren Mountain in Hengchun Peninsula, grows on wet and humus-rich ground or streams under forests, on both sides of valleys. It is a terrestrial or emergent aquatic fern, with underground long creeping rhizome and looks tufted. It has two types of fronds, trophophyll and sporophyll, both of which are pinnately compound fronds. The trophophylls are relatively large, with about 3 to 5 pairs of lateral pinnae, and the apex of the top pinnae of some trophophylls are prolonged into a narrow lanceolate shape, and an adventitious bud grows near the top for asexual reproduction. Its sporangia are scattered all over the abaxial surface of the sporophyll fronds with no indusium.
Bolbitis heteroclita
Bolbitis heteroclita
(2022.10.4 Taiwan)

About Bolbitis heteroclita
Classification: Genus Bolbitis, Family Dryopteridaceae
Scientific name: Bolbitis heteroclita (C. Presl) Ching
Chinese name: 長葉實蕨、大實蕨
Origin: Taiwan, China
Growth environment: In Taiwan, it is only distributed near Nanren Mountain in Hengchun Peninsula, and grows on moist and humus-rich land under forests or on both sides of valleys
Growth habit: Terrestrial or emergent aquatic fern
Hight: Up to about 70 cm
Rhizome: Long creeping, 0.06-0.07 cm in diameter, densely scaly, scale lanceolate, brownish; frond close together, about 1-3 cm apart, tufted
Frond: Dimorphic
  Trophophyll
→Stipe 10-30 cm long, covered with brown lanceolate scales at base
→Blade 1-pinnate, narrow triangle, 30-50 cm long or more, 25-35 cm broad
→Lateral pinnae 3-5 pairs, 15-20 cm long, 3-5 cm broad; sessile
→Margin crenate-serrate
→Top pinna lanceolate, some of them prolonged, about 20-30 cm long,  and grow adventitious buds at tip
→Netted vein, areolae with included veinlets
  Sporophyll
→Stipe 10-45 cm long, covered with brown lanceolate scales at base
→Blade 1-pinnate, narrower than trophophyll; 10-26 cm long, 5-20 cm broad
→Lateral pinnae 4-5 pairs; sessile
→Sporangia scattered all over the abaxial surface
sori
  Sporangia scattered all over the abaxial surface of the sporophyll
  No indusium

Bolbitis heteroclita is native to Taiwan and China. In Taiwan, it is only distributed near Nanren Mountain in Hengchun Peninsula, and grows on moist and humus-rich land under forests or on both sides of valleys.
Bolbitis heteroclita
Bolbitis heteroclita
(2022.10.4 Taiwan)

It is a terrestrial or emergent aquatic fern.
Bolbitis heteroclita
Bolbitis heteroclita
(2022.10.4 Taiwan)

The rhizome is long and creeping, about 0.06-0.07 cm in diameter, densely scaly, scale lanceolate and brownish; fronds close together, about 1-3 cm apart, tufted.
Rhizome & stipes of Bolbitis heteroclita
Rhizome & stipes of Bolbitis heteroclita
(2022.10.4 Taiwan)

Stipe of trophophyll 10-30 cm long, covered with brown lanceolate scales at base.
Blade of trophophyll is 1-pinnate, narrow triangle, 30-50 cm long or more, 25-35 cm broad.
Trophophyll of Bolbitis heteroclita
Trophophyll of Bolbitis heteroclita
(2022.10.4 Taiwan)

Rachis of trophophyll of Bolbitis heteroclita
Rachis of trophophyll of Bolbitis heteroclita
(2022.10.4 Taiwan)

Lateral pinnae of trophophyll is 3-5 pairs, 15-20 cm long, 3-5 cm broad; sessile.
Trophophyll of Bolbitis heteroclita
Trophophyll of Bolbitis heteroclita
(2022.10.4 Taiwan)

Margin crenate-serrate.
Trophophyll of Bolbitis heteroclita
Trophophyll of Bolbitis heteroclita
(2022.10.4 Taiwan)

Netted vein, areolae with included veinlets.
Veins of Bolbitis heteroclita
Veins of Bolbitis heteroclita
(2022.10.4 Taiwan)

Top pinna of trophophyll is lanceolate, some of them prolonged, about 20-30 cm long.
Trophophyll of Bolbitis heteroclita
Trophophyll of Bolbitis heteroclita
(2022.10.4 Taiwan)

And grow adventitious buds at tip.
Top pinna of trophophyll of Bolbitis heteroclita
Top pinna of trophophyll of Bolbitis heteroclita
(2022.10.4 Taiwan)

Adventitious bud of Bolbitis heteroclita
Adventitious bud of Bolbitis heteroclita
(2022.10.4 Taiwan)

Adventitious bud of Bolbitis heteroclita
Adventitious bud of Bolbitis heteroclita
(2022.10.4 Taiwan)

Sporophyll frond 1-pinnate, narrower than trophophyll; blade 10-26 cm long, 5-20 cm broad, stipe 10-45 cm long, covered with brown lanceolate scales at base.
Sporophyll of Bolbitis heteroclita
Sporophyll of Bolbitis heteroclita
(2022.10.4 Taiwan)

Lateral pinnae of sporophyll frond is 4-5 pairs; sessile.
Sporophyll of Bolbitis heteroclita
Sporophyll of Bolbitis heteroclita
(2022.10.4 Taiwan)

The sporophyll frond is upright.
Sporophyll of Bolbitis heteroclita
Sporophyll of Bolbitis heteroclita
(2022.10.4 Taiwan)

The sporangia are scattered all over the abaxial surface of the sporophyll frond.
Sporophyll of Bolbitis heteroclita
Sporophyll of Bolbitis heteroclita
(2022.10.4 Taiwan)

Sporophyll of Bolbitis heteroclita
Sporophyll of Bolbitis heteroclita
(2022.10.4 Taiwan)

There is no indusium.
Sporangia of Bolbitis heteroclita
Sporangia of Bolbitis heteroclita
(2022.10.4 Taiwan)

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