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cones sporophylls

Listing 1 - 10 from 14 for cones sporophylls

The Cycad Pages
... pinnate bipinnate Leaves apically truncate not truncate Megasporophylls not in cones gathered in cones Sporophylls in vertical rows spirally arranged Sporophyll apex a single ... sporophylls with a sharp upturned spine -- Macrozamia 6* Leaflet basal callus absent; sporophylls without a sharp upturned spine 7 Sporophylls with broad flattened upturned and overlapping apices -- Dioon 7* Sporophylls ...
plantnet.rbgsyd.nsw.gov.au

The Cycad Pages
... characters: Leaves bipinnate Leaflets lacking a midrib Leaflets not articulated Sporophylls in vertical rows in cones Key to the species. Click on the name to go ... undersurface. Microsporangia opening by slits. Pollen cymbiform, monosulcate. Male cones stalked, ovoid. Megasporophylls: spirally orthostichous, aggregated into female cones. Sporophylls simple, with a dilated peltate apex or lamina ...
plantnet.rbgsyd.nsw.gov.au
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Fern Allies
... are spore-bearing leaves called sporophylls. These sporophylls are tightly grouped into cones or strobili. (Some ferns do have spore-bearing and sterile leaves but grouping the sporophylls into a cone is quite ... The horsetails are recognizable by their erect, jointed stems ringed by microphylls and topped by cones. Only a single genus Equisetum survives today with a few temperate species but these ...
scitec.uwichill.edu.bb

Continental Drift & Plant Distribution
... to roll downhill. This movement is undoubtedly enhanced by animals feeding on the disintegrating seed cones, particularly species with large, colorful seeds. Most species of cycads tend to grow in regions ... margins. Center photo shows a female plant with clusters of mature seeds atached to the sporophylls. Right photo shows the erect, pollen-bearing cone (strobilus) of a male plant. The individual ...
waynesword.palomar.edu

Biology, biology degrees, research, news, U.W.A. - Institute of Biological Sciences
... plants. They do not form flowers but bear reproductive structures known as cones or strobili which resemble conifer cones. There are two specimens of this Cycad growing in the Tropical House. The female one is currently bearing three developing green cones. When mature, the cone scales,(sporophylls) separate ...
www.aber.ac.uk

Cycads UW Aberystwyth Botanic Gardens
... distinguished most clearly from ferns or palms by the pollen cones (male) or larger seed cones (female), which are produced at the apex of the stem in most cycads. Many of the cones are extremely large; they can be 70 cm long and weigh ... Tropical Glasshouse is female - its cone consists of a rosette of sporophylls that slowly open to reveal the ovules during the summer (below left ...
www.aber.ac.uk
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Cycad International : Katherine NT Australia
... seeds, which commonly are pink to orange-red, grow to such a size that the sporophylls shields are spread apart. See Individual Plants & Request Quote See Related Gallery Images Back to ... cones of Microcycas are rather large. Both male and female sporophylls are covered with short wool. The overall appearance of the male and female cones is one of great geometric regularity, for the sporophylls ...
www.cycadinternational.com.au

Cycad International : Katherine NT Australia
... the seed. Male Cones(Image: Ceratozamia latifolia male cone) As the male cone matures, there is rapid elongation of the cone axis, causing a marked increase in length. The sporophylls separate, ... cones, such as Zamia pumila may still require 9 12 months for their cones to mature. At maturity the female cones begin to disintegrate from the apex downwards. Usually at this time the sporophylls ...
www.cycadinternational.com.au
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Cycad Society SA: Encephalartos cupidus
... cones are green, usually single, subcylindrical, 200mm to 300mm long and 50mm in diameter with a peduncle 50mm to 100mm long. The adaxial surface of the male sporophylls bears a slight median ridge with the terminal facet of the sporophyll glabrous in the centre. Female cones ... and E. middelburgensis in the wild, as if the cones are unpalatable before pollination, but that this rapidly ...
www.cycadsociety.org

Cycad Society SA: Encephalartos longifolius
... lower margin and are pungent-tipped or rounded. Pollen and seed cones are dissimilar and olive green to brownish green. A single cone is usually produced per stem. Males cones are 40-60cm x 15-20cm and cylindrical. The peduncle can ... cones are among the largest of the genus and can weigh up to 40kg. Cones are 50-60cm x 25-30cm, broadly ovoid with warty sporophylls ...
www.cycadsociety.org
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