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Dudleya abramsii

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Species of succulent

Dudleya abramsii
subsp. abramsii
Conservation status

Apparently Secure  (NatureServe)
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Saxifragales
Family: Crassulaceae
Genus: Dudleya
Species: D. abramsii
Binomial name
Dudleya abramsii
Rose

Dudleya abramsii is a species complex of succulent plants native to California and parts of Baja California. There are numerous subspecies, some critically endangered, with varying habits and lifestyles, but most often characterized by a smaller size, yellow flowers, and an affinity for rocky habitats. The subspecies may be polyphyletic.

Description

Dudleya abramsii is a fleshy perennial forming a small basal cluster of leaves around a central caudex. The habit of Dudleya abramsii is growing in either solitary rosettes or in caespitose forms. The thick, glaucous leaves are lance-oblong to lanceolate, reaching up to 11 centimeters in length, but often remaining much smaller, usually 2 to 30 mm long, and 3 to 20 mm wide. The entire rosette is generally only 0.5 to 15 cm wide. The inflorescence is a mostly erect, branching stem lined with pointed bracts and bearing up to 15 flowers. The inflorescence has a peduncle 2 to 25 cm tall, and 1 to 6 mm wide. The lower bracts are 4 to 40 mm large, and the pedicels are anywhere from 0.5 to 7 mm long. The flower has five small, thick sepals at the base of five pale to cream yellow petals each roughly 8 to 13 mm long. The keel of the flower is tinged with fine, purple to red lines.

Taxonomy

There are several subspecies, and many former subspecies with differing recognition. Flora of North America and The Jepson Manual have elevated Dudleya parva to a species, while other subspecies have been moved to Dudleya cymosa

The following subspecies are recognized in the 2012 Jepson eFlora:

Distribution and habitat

D. abramsii is native to California and northern Baja California, where it grows in rocky areas in a number of habitat types.

References

  1. "NatureServe Explorer 2.0".
  2. ^ McCabe, Stephen Ward (2012). "Dudleya abramsii". Jepson eFlora. Jepson Flora Project (eds.). Archived from the original on 2017-08-29. Retrieved 18 October 2021.
  3. Yost, J. M.; Bontrager, M.; McCabe, S. W.; Burton, D.; Simpson, M. G.; Kay, K. M.; Ritter, M. (2013). "Phylogenetic relationships and evolution in Dudleya (Crassulaceae)" (PDF). Systematic Botany. 38 (4): 1096–1104. doi:10.1600/036364413X674760. S2CID 15715233.

External links

Taxon identifiers
Dudleya abramsii
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