radial spines

Listing 11 - 20 from 22 for radial spines

Columnar Cacti - x Myrtgerocactus
... 4 central spines are usually noticed per areole but fairly hard to differentiate from the radials. Central spines 2 ... radial spines per areole. Spines are a mixture of yellow and brown a pretty contrast with the plants bluish green epidermis (fig. 4). On some well-aged stalks the spines ... in place by the intermingling of these spines and the areolar spines. Cultural notes Myrtgerocactus is easy to ...
www.columnar-cacti.org

Pediocactus simpsonii (Cacti)
... Pediocactus simpsonii v. minor than with variety simpsonii. This form has particularly long central spines. v. robustior Photographer: Bill Beaston Owner: Habitat Location: Cortez Mtns, 6700 ft., Eureka Co., ... Height: 7 cm Age: approx 12-15 years Copyright: by photographer central spines: 4-12 straight or slightly curved radial spines: 10-35 widest range of this genus - in juniper-pinyon woodland, ...
www.labs.agilent.com

CSSA Newsletters #15
... globular with 8 to 30 sharp and continuous ribs. Their spines are usually uniform without any major differentiation of the central or radial spines. Older specimens tend to become somewhat elongated. While the ... up to 20 feet in height with ascending branches (four to six ribbed) with paired spines. The juice is very poisonous, which calls for care in handling the plant.
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Notocactus Information Exchange - Classification of the Genus Notocactus
... straight or somewhat spiralling; all spines flexible, thin, bristle like; Central spines 4-6, reddish yellow to brown red or horn coloured, partly bent downwards; Radial spines to 25, yellowish grey ... like ; areole between the humps. Spines not hard or sharp, mostly horn coloured, new spines also brownish to reddish; Radial spines 10-15, Central spines mostly 1, often pointing downwards. Flower ...
www.mfaint.demon.co.uk

Turbinicarpus Information Exchange - Key to the Turbinicarpus species
... Radial spines 6 to 8, flowers white: T. gielsdorfianus Radial spines mostly 12, flowers violet to brownish inside: T. mandragora ssp. beguinii Radial spines 9 to 12, flowers intensive red colour purple: T. horripilus Radial spines ...
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Echinocereus sp. - Hedgehog Cactus - Cactaceae
... diameter with 7-8 ribs. The radial spines are about 1/8 inch (0.3 cm) long, needle shaped and number 15-18 per areole. Central spines number 1-3; needles are up to ½ inch (1.2 cm) long and are straw colored. New growth spines are tinged pink. It is a very easy cactus to grow. Blooming: In the greenhouse ...
www.plantoftheweek.org

cacti
... spines and flowers emerge in most species. The spines of cacti are considered to be modified leaves. They may be all the same or the outer radial spines may be different from the inner central spines. Spines ... I think that the smoother cacti with fewer spines are less hardy and the more spiny and ...
www.richardadam.pwp.blueyonder.co.uk

The Succulent Plant Page: Glossary of Botanical Terms
... Spines are classified as central spines located centrally on the areole and radial spines around the margins of the areole. Spines protect the plant from some predators, albeit inefficiently. In some species, spines ... outwards by means of rooting from reclining stems. In Cactaceae an array of radial spines projecting obliquely outwards around an areole, but not lying flat against the surface ...
www.succulent-plant.com

Cacti ARE Succulents (Part 1)
... any leaves but rather is covered with lots of sharp spines. The spines are what family is named after as the name ... spines, it is the grouping of spines on areoles that distinguishes cacti from other cactus-like plants. An areole is the radial arrangement of spines ... out how to get around the prickly problem of spines. Another function that spines perform is to slow down blowing winds thus reducing ...
gardenline.usask.ca

Glossary of Pollen and Spore Terminology - Part 5 (S-Z)
... suprareticulate, suprarugulate, suprastriate. Supratectal (adj.) (Erdtman, 1969) Indicating the position of features, such as spines, on the top of the tectum. Suture (Potonié and Kremp, 1955) Synonym of commissure. ... fossil spores. See also: lira. Valva (pl. valvae, adj. valvate) (Potonié and Kremp, 1955) Radial thickenings in the areas beyond the ends of the laesurae of trilete spores. Example: ...
www.biol.ruu.nl

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