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Dudleya is a relatively obscure genus, in comparison to other, more widely-cultivated succulents; converging interests, by succulent collectors, native plant enthusiasts and gardeners alike, have led to the wider cultivation of many species as ornamental plants.
Dudleya pulverulenta exhibits a pollination syndrome uniquely adapted to hummingbirds.The flowers have long red petal tubes (corollas) and are unscented. The flowers hang downward (), achieved by a twist at the base of the terminal inflorescence branches, known as the cincinni, which inverts the flowers from the typically erect or ascending position seen in other Dudleya.
The shapes of hummingbird beaks (also called bills) vary widely as an adaptation for specialized feeding, [66] [67] with some 7000 flowering plants pollinated by hummingbird nectar feeding. [195] Hummingbird beak lengths range from about 6 millimetres (0.24 in) to as long as 110 millimetres (4.3 in). [ 196 ]
The broad-tailed hummingbird, Selasphorus platycercus, is a member of the order Apodiformes, in the family Trochilidae. Hummingbird taxonomy has not been extensively studied, but its phylogenic division can be divided as a family into nine clades in which the broad-tailed hummingbird is a member of the "Bee group" and included in the Selasphorus genus.
Dudleya edulis is a species of perennial, succulent flowering plant of the Crassulaceae, known by the common names fingertips, lady-fingers, mission lettuce, or simply the San Diego dudleya. The common name "fingertips" denotes the finger-like shape of the leaves; the specific epithet edulis (meaning "edible") refers to the Kumeyaay people's ...
Dudleya brittonii, with the common names Britton's dudleya, Britton's liveforever and giant chalk dudleya, is a large succulent plant in the family Crassulaceae, the same genus as jade plants. It is native (possibly endemic) to the coast of northern Baja California, Mexico. Uniquely, Britton’s Dudleya has a green form, or variant of the white ...
Xantus's hummingbird forages for nectar at a very wide variety of flowering plants, shrubs and trees, and feeds at all levels of the vegetation. It defends feeding territories. It has been noted as a major pollinator of madrone (Arbutus peninsularis), a preferred nectar source. In addition to nectar, it also feeds on small insects captured in ...
Owing to the difficulty of collecting this plant in the wild, combined with crackdowns on its poaching by the Mexican government, some poachers have instead focused on stealing a related plant, Dudleya farinosa, native to the west coast of the United States, labeled by Dudleya expert and botanist Stephen W. McCabe as "a poor man's pachyphytum."