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The seeds when mature measure about 5 cm (2.0 in) long by 4 cm (1.6 in) wide and are sheathed in a bright red sarcotesta. [4] [5] [6] It is reputed to be the tallest known species of cycad and it towers over other understorey vegetation, but rarely reaches the forest canopy. [6] [7]: 4
This cycad is tree-like, dioecious, growing up to 1 meter tall and 30 centimeters wide, often with additional stems sprouting from its base. [2] Its pinnate leaves, located in a cluster at the top of the stem, are 1–1.3 meters long, supported by a 15-20 centimeter petiole, and made up of many pairs of lance-shaped, leathery green leaves, each about 15–20 centimeters long, with a spiny edge ...
Lepidozamia peroffskyana is a palm-like cycad in the Cardboard Palm Family Zamiaceae. It is endemic to eastern Australia , primarily near the coast of New South Wales . The species is named after Count Peroffsky (1794-1857), benefactor of the St. Petersburg Botanical Garden .
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Cardboard cycads can only be reproduced by the fleshy, brightly crimson-colored seeds produced by the female plants. The germination process is very slow and difficult to achieve in cultivation; as a result, many plants sold for horticultural use are illegally collected in the wild, leading to the species being classified as Endangered.
Encephalartos lebomboensis is a species of cycad in the family Zamiaceae. Native to the Lebombo Mountains of South Africa, the species was first described in 1949 by the South African botanist Inez Verdoorn. [3] It is commonly known as the Lebombo cycad, although the name is also used for Encephalartos senticosus which also occurs in the same ...
A specimen of L. hopei is known as the tallest living cycad at 17.5 m tall. These cycads are generally unbranched, tall, and with persistent leaf bases. They are easily cultivated as ornamental plants and are relatively cold hardy; L. peroffskyana was first described by a specimen grown at Saint Petersburg Botanical Garden in 1857.
This cycad is stemless, growing from an underground stem that's about 30 cm long and 25 cm wide. Occasionally, a small part of the stem may emerge above the ground. Its leaves, numbering from eight to ten, are flat and opaque, measuring 80–120 cm long, and have a bluish or silvery green hue.