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pollen cones

Listing 1 - 10 from 55 for pollen cones

The Cycad Pages
... Pollen cones (number) Pollen cones(shape) globose ovoid narrowly ovoid fusiform Pollen cones (colour) bluish-green green yellow red brown pollen cones cm long pollen cones cm diam. Seed cones (number) Seed conesshape globose ovoid narrowly ovoid fusiform Seed cones ...
plantnet.rbgsyd.nsw.gov.au

Bowenia spectabilis
... lacerations, or rarely regularly shortly serrate. Pollen cones stalked, ovoid, to 5 cm long, 2.5 cm in diameter; sporophylls broadly cuneate, distally dilated and truncate. Seed cones sessile, ovoid to globose, to ...
plantnet.rbgsyd.nsw.gov.au
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Cycads UW Aberystwyth Botanic Gardens
... 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 ... the ovules during the summer (below left and right). A male cone (note the white pollen) can be seen on the right on the Southern African cycad Encephalartos bartii and the ...
www.aber.ac.uk

Ephedra antisyphilitica, clapweed
... , often early-deciduous. Pollen cones 1-2 per node, ovoid, 4-8 mm (0.15-0.3 in) long, scales usually greenish and in 5-8 opposite pairs. Ovulate cones 1-2 per ...
www.biosurvey.ou.edu

Maynard Moseley Award
... Buxaceae" co-authored by Peter Endress Genero Hernandez-Castillo For "Evidence from compound pollen cones in Paleozoic conifers" coauthored by Gar Rothwell and Gene Mapes. 2000 Sandra Floyd, ... growth parameters." 1996 - Ranessa Cooper, Truman State University For her paper entitled "Comparative pollen morphology and ultrastructure of the Callitrichaceae." 1995 - Susana Magallon-Puebla, University of ...
www.botany.org

Pinus sabiniana
... . Copyright Lee Dittmann. Immature pollen cones and foliage (needles). Ridge View Camp, Pine Ridge. 30 March 2003. Photo copyright Gena Zolotar. Used with permission. Pollen cone. Along Yerba Buena Trail, Pine ...
www.coestatepark.com

Cycad Society SA: Encephalartos aplanatus
... to 300mm long, 40mm wide and dark glossy green in colour. Pollen cones number up to 3 per plant. They are up to 650mm ... sharp abaxial ridges. The cones appear in January, mid summer, pollen is shed in mid autumn and the female cones disintegrate in early to mid ... of Porthetes beetles present in both E. aplanatus and E. villosus cones. These species are restricted to their specific host cycad species ...
www.cycadsociety.org

pollen grain morphology juniper
... pollen type (Cupressaceae) with that of the "Taxodiaceae" (papillate grains) and Taxaceae -- the "TCT" pollen type. Fossil Occurrence: Plant fossils (leaves, cones) are known from the early Mesozoic onward. References: Erdtman, G. 1957. Pollen ...
www.geo.arizona.edu

pollen grain morphology abies
... twigs. Female cones held upright on the branches, resinous, falling apart when mature. Widespread in the Northern Hemisphere, temperate to subalpine. Pollen light micrograph: Fir (Abies) pollen like pine (Pinus), and spruce (Picea) is a bisaccate (or vesiculate) pollen grain consisting of a body ...
www.geo.arizona.edu
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Horticulture: Collection and Storage of Cycad Pollen
... pollen and females produce seeds. Male cones are typically thinner and taller than female cones. Most species have a particular time of year when the males shed pollen ... any pollen that may fall out. If ANY pollen falls from the cone, it is ready to harvest. Stangeria cones are ... pollen sacks that have not yet ruptured; the bottom picture shows what ruptured pollen sacks look like. Two male Zamia cones ...
www.plantapalm.com




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