Biology:Neolloydia
Neolloydia is a genus of cacti.
Description
These small, low-growing cacti are usually solitary or form loose cushions. They have spherical to cylindrical shoots that are typically yellowish-green with whitish, woolly tips. The plants measure 3 to 6 centimeters in diameter and 5 to 24 centimeters in height. They have weakly developed or absent ribs. Distinctive conical warts, 3 to 10 millimeters long and 6 to 10 millimeters wide, are prominent on the surface. The areoles are dimorphic, about 3 to 5 millimeters in diameter, spaced 8 to 12 millimeters apart, with a furrow. Central spines, which may be absent, are 1 to 2 (sometimes up to 6) in number, variable in color from black to reddish-brown, straight, and erect, measuring 5 to 25 millimeters. Radial spines are straight, white or whitish with dark tips, and 5 to 7 millimeters long. The flowers are small, funnel-shaped, and typically purple-red. They are 2 to 3 centimeters long and 4 to 6 centimeters in diameter, with a smooth (glabrous) calyx. Fruits are round, green to greenish-brown, smooth, do not open, and measure 4 to 5 millimeters across. They contain black, pear-shaped, warty seeds.[1]
Distribution
Neolloydia is native to northern Mexico, with its range from West Texas south through the Chihuahuan Desert to Querétaro.
Taxonomy
The genus was first erected by Britton and Rose in 1922.[2] The name honors American botanist Francis Ernest Lloyd.[3] Edward F. Anderson regarded Neolloydia as being poorly defined, with the result that species that had at times been included in Neolloydia were afterwards placed in multiple genera, including Coryphantha, Echinomastus, Escobaria, Mammillaria, Sclerocactus, Thelocactus and Turbinicarpus. In his 2001 book, Anderson firmly placed only one species in the genus, Neolloydia conoidea, with another, Neolloydia matehualensis, being regarded as only a variant of N. conoidea.[4] As of December 2022[update], Plants of the World Online treated Neolloydia conoidea as a synonym of Cochemiea conoidea,[5] and Neolloydia as a synonym of Cochemiea.[6]
Species
As of October 2025[update], Plants of the World Online accepts the following species.[7]
| Image | Scientific name | Distribution |
|---|---|---|
| 120px | Neolloydia conoidea (DC.) Britton & Rose | southern United States to central Mexico |
| Neolloydia inexpectata D.Donati | Mexico (Tamaulipas) | |
| 120px | Neolloydia matehualensis Backeb. | Mexico (San Luis Potosí) |
Species formerly placed in Neolloydia include:[8]
- Neolloydia clavata → Coryphantha clavata
- Neolloydia horripila → Kadenicarpus horripilus
- Neolloydia johnsonii → Sclerocactus johnsonii
- Neolloydia laui → Turbinicarpus laui
- Neolloydia lophophoroides → Turbinicarpus lophophoroides
- Neolloydia macdowellii → Thelocactus macdowellii
- Neolloydia mandragora → Rapicactus mandragora
- Neolloydia mariposensis → Sclerocactus mariposensis
- Neolloydia odorata → Cumarinia odorata
- Neolloydia pilispina → Mammillaria pilispina
- Neolloydia roseana → Acharagma roseanum
- Neolloydia Neolloydia subterranea → Rapicactus subterraneus
- Neolloydia texensis → Cochemiea conoidea
- Neolloydia zaragosae → Rapicactus zaragosae
References
- ↑ Anderson, Edward F.; Eggli, Urs (2005) (in de). Das grosse Kakteen-Lexikon. Stuttgart (Hohenheim): Ulmer. p. 441-442. ISBN 3-8001-4573-1.
- ↑ "Neolloydia Britton & Rose Britton & Rose", The International Plant Names Index, http://www.ipni.org/ipni/idPlantNameSearch.do?id=295368-2, retrieved 2022-12-20
- ↑ Burkhardt, Lotte (2018-06-06). Verzeichnis eponymischer Pflanzennamen - Erweiterte Edition. Index of Eponymic Plant Names - Extended Edition. Index de Noms éponymiques des Plantes - Édition augmentée. Botanic Garden and Botanical Museum Berlin, Freie Universität Berlin. doi:10.3372/epolist2018. ISBN 978-3-946292-26-5. https://www.bgbm.org/de/node/3642. Retrieved 2025-10-25.
- ↑ Anderson, Edward F. (2001), "Neolloydia", The Cactus Family, Pentland, Oregon: Timber Press, pp. 479–481, ISBN 978-0-88192-498-5
- ↑ "Neolloydia conoidea (DC.) Britton & Rose", Plants of the World Online (Royal Botanic Gardens, Kew), https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:168615-2, retrieved 2022-12-20
- ↑ "Neolloydia Britton & Rose", Plants of the World Online (Royal Botanic Gardens, Kew), https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:295368-2, retrieved 2022-12-20
- ↑ "Plants of the World Online". https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:295368-2.
- ↑ "Search for Neolloydia", Plants of the World Online (Royal Botanic Gardens, Kew), https://powo.science.kew.org/results?q=Neolloydia, retrieved 2022-12-20
External links
Data related to Neolloydia at Wikispecies
Wikidata ☰ Q138366 entry
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