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The New Zealand tree fern Dicksonia squarrosa is the most abundant medium-sized tree fern. It has a tall slender brown trunk. This fern produces few fronds, all of which sprout in almost horizontal fashion. The fronds reach 1.5 - 3 m in length, much smaller than Cyathea varieties, and are quite crisp to touch. They form a small "umbrella" on top of the trunk. It has a fast growth rate of up to 10 cm (5 in) a year, growing up to 6 m tall. The stipes are covered with longish brown black hairs. The upper part of the trunk can be covered with dead fronds. These ferns are sometimes found sprouting from apparently dead pieces of trunk. Since it often sends out underground rhizomes that produce new plants it is often found in colonies. The trunks are often used for fencing or edging and fronds will sometimes sprout from the side if the top is dead.'''<br /> | The New Zealand tree fern Dicksonia squarrosa is the most abundant medium-sized tree fern. It has a tall slender brown trunk. This fern produces few fronds, all of which sprout in almost horizontal fashion. The fronds reach 1.5 - 3 m in length, much smaller than Cyathea varieties, and are quite crisp to touch. They form a small "umbrella" on top of the trunk. It has a fast growth rate of up to 10 cm (5 in) a year, growing up to 6 m tall. The stipes are covered with longish brown black hairs. The upper part of the trunk can be covered with dead fronds. These ferns are sometimes found sprouting from apparently dead pieces of trunk. Since it often sends out underground rhizomes that produce new plants it is often found in colonies. The trunks are often used for fencing or edging and fronds will sometimes sprout from the side if the top is dead.'''<br /> | ||
'''<br /> | '''<br /> | ||
[ | [[File:Dicksonia squarrosa Rough tree fern-14.JPG|frameless|upright 2.25]] | ||
Dicksonia squarrosa (adult ) in the middle Cyathea medullaris on top right <br /> | Dicksonia squarrosa (adult ) in the middle Cyathea medullaris on top right <br /> | ||
[ | [[File:Dicksonia squarrosa Rough tree fern-19.JPG|frameless|upright 2.25]] | ||
Cyathea medullaris on left, Dicksonia squarrosa middle[ | Cyathea medullaris on left, Dicksonia squarrosa middle[[File:Dicksonia squarrosa Rough tree fern-11.JPG|frameless|upright 2.25]] | ||
Dicksonia squarrosa topside frond pinnae<br /> | Dicksonia squarrosa topside frond pinnae<br /> | ||
[ | [[File:Dicksonia squarrosa topside.JPG|frameless|upright 2.25]] | ||
The underside of Dicksonia squarrosa pinnae<br /> | The underside of Dicksonia squarrosa pinnae<br /> | ||
[ | [[File:Dicksonia squarrosa underside-4.JPG|frameless|upright 2.25]] | ||
The underside of a fertile frond showing sori. Sori is a cluster of sporangia (structures producing and containing spores)<br /> | The underside of a fertile frond showing sori. Sori is a cluster of sporangia (structures producing and containing spores)<br /> | ||
[[File:Dicksonia squarrosa Wheki rough tree fern-003.JPG|frameless|upright 2.25]] | |||
Thanks to Wikipedia for text and information: | Thanks to Wikipedia for text and information: | ||
[https://creativecommons.org/licenses/by-sa/3.0/%20 https://creativecommons.org/licenses/by-sa/3.0/ ] | [https://creativecommons.org/licenses/by-sa/3.0/%20 https://creativecommons.org/licenses/by-sa/3.0/ ] | ||
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Latest revision as of 16:29, 24 September 2019
Kingdom: Plantae
Division: Pteridophyta
Class: Pteridopsida
Order: Cyatheales
Family: Dicksoniaceae
Genus: Dicksonia
Species: D. squarrosa
Binomial name: Dicksonia squarrosa
Common names: Rough tree fern, Wheki, Brown tree fern.
The New Zealand tree fern Dicksonia squarrosa is the most abundant medium-sized tree fern. It has a tall slender brown trunk. This fern produces few fronds, all of which sprout in almost horizontal fashion. The fronds reach 1.5 - 3 m in length, much smaller than Cyathea varieties, and are quite crisp to touch. They form a small "umbrella" on top of the trunk. It has a fast growth rate of up to 10 cm (5 in) a year, growing up to 6 m tall. The stipes are covered with longish brown black hairs. The upper part of the trunk can be covered with dead fronds. These ferns are sometimes found sprouting from apparently dead pieces of trunk. Since it often sends out underground rhizomes that produce new plants it is often found in colonies. The trunks are often used for fencing or edging and fronds will sometimes sprout from the side if the top is dead.
Dicksonia squarrosa (adult ) in the middle Cyathea medullaris on top right
Cyathea medullaris on left, Dicksonia squarrosa middle
Dicksonia squarrosa topside frond pinnae
The underside of Dicksonia squarrosa pinnae
The underside of a fertile frond showing sori. Sori is a cluster of sporangia (structures producing and containing spores)
Thanks to Wikipedia for text and information:
https://creativecommons.org/licenses/by-sa/3.0/
