Difference between revisions of "Mammillaria sphaerica"
Allg. Gartenzeitung. 21: 94. 1853.
FNA>Volume Importer |
imported>Volume Importer |
||
| (6 intermediate revisions by 2 users not shown) | |||
| Line 12: | Line 12: | ||
|name=Dolichothele sphaerica | |name=Dolichothele sphaerica | ||
|authority=(A. Dietrich) Britton & Rose | |authority=(A. Dietrich) Britton & Rose | ||
| − | }}{{Treatment/ID/Synonym | + | |rank=species |
| + | }} {{Treatment/ID/Synonym | ||
|name=Mammillaria longimamma var. sphaerica | |name=Mammillaria longimamma var. sphaerica | ||
|authority=(A. Dietrich) K. Brandegee | |authority=(A. Dietrich) K. Brandegee | ||
| + | |rank=variety | ||
}} | }} | ||
|hierarchy=Cactaceae;Cactaceae subfam. Cactoideae;Mammillaria;Mammillaria sphaerica | |hierarchy=Cactaceae;Cactaceae subfam. Cactoideae;Mammillaria;Mammillaria sphaerica | ||
| Line 30: | Line 32: | ||
|elevation=0-300 m | |elevation=0-300 m | ||
|distribution=Tex.;Mexico (Nuevo León;Tamaulipas). | |distribution=Tex.;Mexico (Nuevo León;Tamaulipas). | ||
| − | |discussion=<p>A proposed taxonomic reduction of Mammillaria sphaerica to varietal rank within the geographically disjunct and morphologically distinct Mexican species, M. longimamma, while plausible, has not yet been convincingly justified.</p> | + | |discussion=<p>A proposed taxonomic reduction of <i>Mammillaria sphaerica</i> to varietal rank within the geographically disjunct and morphologically distinct Mexican species, M. longimamma, while plausible, has not yet been convincingly justified.</p> |
|tables= | |tables= | ||
|references= | |references= | ||
| Line 39: | Line 41: | ||
-->{{#Taxon: | -->{{#Taxon: | ||
name=Mammillaria sphaerica | name=Mammillaria sphaerica | ||
| − | |||
|authority=A. Dietrich | |authority=A. Dietrich | ||
|rank=species | |rank=species | ||
| Line 54: | Line 55: | ||
|publication year=1853 | |publication year=1853 | ||
|special status= | |special status= | ||
| − | |source xml=https:// | + | |source xml=https://bitbucket.org/aafc-mbb/fna-data-curation/src/2e0870ddd59836b60bcf96646a41e87ea5a5943a/coarse_grained_fna_xml/V4/V4_454.xml |
|subfamily=Cactaceae subfam. Cactoideae | |subfamily=Cactaceae subfam. Cactoideae | ||
|genus=Mammillaria | |genus=Mammillaria | ||
Latest revision as of 21:58, 5 November 2020
Plants many branched; branches 10–30(–50). Roots thick taproots, large in upper portion. Stems subspheric, 4–5 × 5–8 cm, soft, flaccid; tubercles 12–25 × 5–8 mm; axils slightly short woolly, without bristles; cortex and pith not mucilaginous; latex absent. Spines 13–15 per areole, whitish to yellowish, glabrous; radial spines 12–14 per areole, gray, bristlelike, 6–9 × 0.1 mm, stiff; central spines 1 per areole, porrect, straight, not hooked or curved, similar to radial spines, 3–6 × 0.25 mm; subcentral spines 0. Flowers 4 × 5–7 cm; outermost tepal margins entire (or minutely toothed near base); inner tepals bright yellow, paler near base, 20–30 × 4.5–8.5 mm; stigma lobes cream to pale yellow, 5–6 mm. Fruits greenish white to dull pinkish tan or maroon, ovoid to short cylindric, 10–15(–20) × 7 mm, juicy throughout; floral remnant weakly persistent. Seeds brown, 1.3 × 0.9 mm, pitted; testa soft or leathery, not hard or brittle; anticlinal cell walls straight to slightly curved; interstices equal or narrower than pit diameters; pits bowl-shaped. 2n = 22.
Phenology: Flowering Jul; fruiting May.
Habitat: Tamaulipan thorn scrub on plains and low gravelly hills
Elevation: 0-300 m
Distribution
Tex., Mexico (Nuevo León, Tamaulipas).
Discussion
A proposed taxonomic reduction of Mammillaria sphaerica to varietal rank within the geographically disjunct and morphologically distinct Mexican species, M. longimamma, while plausible, has not yet been convincingly justified.
Selected References
None.