Biology:Hesperoyucca peninsularis
| Hesperoyucca peninsularis | |
|---|---|
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Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Monocots |
| Order: | Asparagales |
| Family: | Asparagaceae |
| Subfamily: | Agavoideae |
| Genus: | Hesperoyucca |
| Species: | H. peninsularis
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| Binomial name | |
| Hesperoyucca peninsularis (McKelvey) Clary
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| Synonyms[2] | |
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Hesperoyucca peninsularis, the peninsular candle or lechuguilla, is a plant species endemic to the Baja California peninsula. It is a perennial forming a rosette. It is semelparous (flowering once then dying).[2][3]
Description
Plants are monocarpic or polycarpic, and sometimes rhizomatous. Some form secondary rosettes at their base while others branch their caudex to produce new rosettes after flowering.[2]
Taxonomy
Phylogeny and classification
Although morphological characteristics and phylogenetic ITS analysis show that H. peninsularis is somewhat distinct from H. whipplei,[2] it is still widely recognized as either a form or a subspecies of H. whipplei. More conclusive research shows that H. peninsularis and H. whipplei form a polytomy, and are sister to H. newberryi, which is consistent with the fact that the populations of H. newberryi are disjunct from the genus while H. peninsularis and H. whipplei overlap.[4]
Distribution and habitat
It occurs in the coastal succulent scrub of northwestern Baja California south into the central desert and the Sierra de San Francisco in Baja California Sur.[5]
This species grows in association with Elephant cactus, Larrea, Boojum trees, barrel cacti, Dudleya, Agave, ragweed and chollas. It grows on granite or basalt soils.[1] The plant tends to grow in clusters but occasionally can be found growing solitarily.[2]
References
- ↑ 1.0 1.1 Hodgson, W. (2020). "Hesperoyucca peninsularis". IUCN Red List of Threatened Species 2020: e.T163128320A163128352. doi:10.2305/IUCN.UK.2020-1.RLTS.T163128320A163128352.en. https://www.iucnredlist.org/species/163128320/163128352. Retrieved 15 September 2021.
- ↑ 2.0 2.1 2.2 2.3 2.4 Clary, Karen Husum. 2001. The genus Hesperoyucca (Agavaceae) in the western United States and Mexico: New nomenclatural combinations. Sida 19(4): 839-847.
- ↑ McKelvey, Susan Delano. 1947. Yuccas of the Southwestern United States 2: 49–52, map 1.
- ↑ Archibald, J. K., Kephart, S. R., Theiss, K. E., Petrosky, A. L., & Culley, T. M. (2015). Multilocus phylogenetic inference in subfamily Chlorogaloideae and related genera of Agavaceae–Informing questions in taxonomy at multiple ranks. Molecular phylogenetics and evolution, 84, 266-283.
- ↑ Rebman, J. P.; Gibson, J.; Rich, K. (2016). "Annotated checklist of the vascular plants of Baja California, Mexico". San Diego Society of Natural History 45: 272. http://sdplantatlas.org/pdffiles/BajaChecklist2016.pdf.
Wikidata ☰ Q16753778 entry
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