|
Bowenia
The genus ''Bowenia'' includes two living and two fossil species of cycads in the family Stangeriaceae, sometimes placed in their own family Boweniaceae. They are entirely restricted to Australia. The two living species occur in Queensland. ''B. spectabilis'' grows in warm, wet, tropical rainforests, on protected slopes and near streams, primarily in the lowlands of the Wet Tropics Bioregion. However, it has a local form with serrate pinna margins that grows in rainforest, ''Acacia''-dominated transition forest, and also ''Casuarina''-dominated sclerophyll forest on the Atherton Tableland, where it is subject to periodic bushfire. ''B. serrulata'' grows in sclerophyll forest and transition forest close to the Tropic of Capricorn. Species The fossil species ''Bowenia eocenica'' is known from deposits in a coal mine in Victoria, Australia, and ''B. papillosa'' is known from deposits in New South Wales. Both fossils are of Eocene age, and consist of leaf A leaf ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bowenia Spectabilis
''Bowenia spectabilis'' is a species of cycad in the family Stangeriaceae. It is endemic to Queensland, Australia. Its natural habitat is subtropical or tropical moist lowland forests. Range ''Bowenia spectabilis'' is found in northeastern Queensland from the McIlwraith Range on the Cape York Peninsula south to near Tully. It is a rainforest species, growing close to streams and on sheltered slopes in lowland wet sclerophyll Sclerophyll is a type of vegetation that is adapted to long periods of dryness and heat. The plants feature hard leaves, short internodes (the distance between leaves along the stem) and leaf orientation which is parallel or oblique to direct ... forest, but also at an altitude of up to 700 metres in the Atherton Tableland. Gallery The 1889 book 'The Useful Native Plants of Australia' records that the yam-like rhizome is used for food by the Indigenous Australians. Image:Bowenia spectabilis Mossman 1.JPG, ''Bowenia spectabilis'' at Mossman Gorge, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bowenia Serrulata
''Bowenia serrulata'', the Byfield fern, is a cycad in the family Stangeriaceae. Its bipinnate fronds, arising from a subterranean caudex, give it the appearance of a fern. However it is not a fern as its vernacular name and appearance suggest. It is endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found els ... to the vicinity of Byfield, Australia. Gallery Image:Bowenia serrulata 1.JPG, ''Bowenia serrulata'' growing in transition forest near Byfield, in the Capricornia region of Queensland, Australia Image:Bowenia serrulata 2.JPG, ''Bowenia serrulata'' growing in transition forest near Byfield, in the Capricornia region of Queensland, Australia Image:Bowenia serrulata 3.JPG, ''Bowenia serrulata'' growing in transition forest near Byfield, in the Capricornia region of Queensland, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cycad
Cycads are seed plants that typically have a stout and woody (ligneous) trunk with a crown of large, hard, stiff, evergreen and (usually) pinnate leaves. The species are dioecious, that is, individual plants of a species are either male or female. Cycads vary in size from having trunks only a few centimeters to several meters tall. They typically grow very slowly and live very long. Because of their superficial resemblance, they are sometimes mistaken for palms or ferns, but they are not closely related to either group. Cycads are gymnosperms (naked-seeded), meaning their unfertilized seeds are open to the air to be directly fertilized by pollination, as contrasted with angiosperms, which have enclosed seeds with more complex fertilization arrangements. Cycads have very specialized pollinators, usually a specific species of beetle. Both male and female cycads bear cones (strobili), somewhat similar to conifer cones. Cycads have been reported to fix nitrogen in association ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cycadophyta Of Australia
Cycads are seed plants that typically have a stout and woody (ligneous) trunk with a crown of large, hard, stiff, evergreen and (usually) pinnate leaves. The species are dioecious, that is, individual plants of a species are either male or female. Cycads vary in size from having trunks only a few centimeters to several meters tall. They typically grow very slowly and live very long. Because of their superficial resemblance, they are sometimes mistaken for palms or ferns, but they are not closely related to either group. Cycads are gymnosperms (naked-seeded), meaning their unfertilized seeds are open to the air to be directly fertilized by pollination, as contrasted with angiosperms, which have enclosed seeds with more complex fertilization arrangements. Cycads have very specialized pollinators, usually a specific species of beetle. Both male and female cycads bear cones (strobili), somewhat similar to conifer cones. Cycads have been reported to fix nitrogen in associati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stangeriaceae
Stangeriaceae is the smallest family of the cycads, including only two extant genera, '' Stangeria'' and '' Bowenia'', which both have an underground stem. Taxonomy Although the family was first published by Schimper and Schenk as Stangerieae, the name Stangeriaceae was used by Johnson (who was unaware of previous uses) to include only the genus ''Stangeria.'' Later, Stevenson expanded the family to include ''Bowenia.'' This decision was based on some shared characters (synapomorphies) such as the presence of fused vacularized stipules, the lack or irregular production of cataphylls, and a few other anatomical and morphological traits. Later molecular evidence suggested that the two genera of the Stangeriaceae belonged in different positions within the Zamiaceae, thus leading other authors to propose dissolving the family. Genera * Subfamily Stangerioideae *** '' Stangeria '' Moore (1 species) * Subfamily Bowenioideae *** '' Bowenia'' Hooker ex Hooker f. (2 species) *** † ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Cycad")