Hazardia berberidis | |
---|---|
In flower, San Diego, California | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Asterales |
Family: | Asteraceae |
Genus: | Hazardia |
Species: | H. berberidis |
Binomial name | |
Hazardia berberidis | |
Synonyms [1] [2] | |
|
Hazardia berberidis is a species of flowering plant in the family Asteraceae commonly known as the barberry-leaf goldenbush. A woody shrub, it is characterized by sawtooth leaves and yellow ray flowers that bloom from March to August. It is endemic to the coastal sage scrub and coastal succulent scrub habitats of Baja California, Mexico, [3] [4] but with populations of uncertain origin in San Diego County, California. [5]
This species is a loosely-branched woody shrub that grows 0.5–2 m (1.6–6.6 ft) tall. The leaves have sawtooth-like edges, and are rigid and leathery, growing 1.5–5 cm (0.59–1.97 in) long. It is similar to Hazardia rosarica and Hazardia squarrosa , a shrubby congener with toothed leaves, with Hazardia berberidis being distinguished by its ray flowers and erect, non-squarrose involucral bracts. [6] [7]
The branches of this species are 3–30 mm (0.12–1.18 in) in diameter and reach 5–10 dm (20–39 in) in length, and are covered with sparse, villous hairs (trichomes). The branches are leafy throughout, with the internodes measuring around 1–2.5 cm (0.39–0.98 in), usually with small fascicles in the axils. The leaves are sessile, and are shaped ovate-oblong to oblong, 1.5–5 cm (0.59–1.97 in) long and 3–18 mm (0.12–0.71 in) wide. Most of the leaf is usually free of hair. On the lower surface of the leaf is a prominent midrib, towards the base of which the only hairs on the leaf may be found. The margins of the leaf are distinctly dentate, with acute and spiny serrations throughout. [7] [8]
The composite flowers have a radiate head, with disk flowers in the center surrounded by ray flowers, colored yellow and aging to a dark red to purple. The composite flowers are borne either solitary at the ends of branches, sessile in a racemose capitulescence, or on leafy peduncles that grow up to 3 cm (1.2 in) long. The involucres are shaped like a broad, inverted cone or bell, and are shorter than the disk. The involucres measure 1–2 cm (0.39–0.79 in) high by 1–1.5 cm (0.39–0.59 in) wide, and have 30 to 60 erect bracts. [7] [8]
There are 15 to 25 ray florets surrounding the center of disk florets. The ray florets have ligules that measure 6–9 mm (0.24–0.35 in) long by 1.5–2 mm (0.059–0.079 in) wide, and are faintly 3-lobed at their tip. There are 30 to 60 disk florets in the center of the composite flower. In fruit, achenes about 4–5 mm (0.16–0.20 in) long form in both types of florets, with a pappus of 30 to 50 brown-colored bristles. [7] [8]
The type specimen of this species was collected in July 1882 at Bahía de Todos Santos, by a Miss F.E. Fish. It was later described in 1884 by Asa Gray, and combined into Hazardia berberidis by Edward Lee Greene in 1894. [8] It is not presently Haplopappus as taxonomic research led to the split of that genus into many different segregates, including Hazardia , all known commonly as goldenbushes. There are 10 shrub species of Hazardia native to the Baja California region, including 8 endemics. [6]
This species forms natural hybrids with Hazardia orcuttii and Hazardia ferrisiae . In 1928 H.M. Hall noted the similarity of H. berberidis to Haplopappus species in the section Polyphylla from South America, particularly Haplopappus deserticolus and Haplopappus mucronatus . Hall suggested that they may be close relatives, and the same chromosome number, n = 5, is found both in several South American species and in H. berberidis. In addition, hybrids between Hazardia and Haplopappus section Polyphylla have been made. However, studies of chemicals from both groups suggest they are generically distinct. [8]
This species is endemic to Baja California, Mexico. It is found on the Islas Coronados, Islas Todos Santos and the adjacent coast south to El Rosario. [3] It is primarily abundant in coastal areas, like beaches, bluffs and edges of sand dunes, and inland to hillsides and arroyos. [7] It usually grows in the Mediterranean-type climate of coastal sage scrub and coastal succulent scrub, [6] being associated with Agave , Artemisia , Simmondsia , Opuntia , Rhus , and Atriplex species. [8]
Hazardia berberidis is present in San Diego County, California, but it is unknown whether the plants there represent native or introduced populations. [5]
Layia platyglossa, commonly called coastal tidytips, is an annual wildflower of the family Asteraceae, native to western North America.
Artemisia californica, also known as California sagebrush, is a species of western North American shrub in the sunflower family.
Eriogonum fasciculatum is a species of wild buckwheat known by the common names California buckwheat and flat-topped buckwheat. Characterized by small, white and pink flower clusters that give off a cottony effect, this species grows variably from a patchy mat to a wide shrub, with the flowers turning a rusty color after blooming. This plant is of great benefit across its various habitats, providing an important food resource for a diversity of insect and mammal species. It also provides numerous ecosystem services for humans, including erosion control, post-fire mitigation, increases in crop yields when planted in hedgerows, and high habitat restoration value.
Hazardia is a small genus of North American flowering plants in the family Asteraceae. Plants in this genus may be called bristleweeds or goldenbushes.
Ornithostaphylos is a monotypic plant genus which contains the single species Ornithostaphylos oppositifolia, commonly known as the Baja California birdbush or Baja California manzanita. A large, evergreen shrub in the heather family, this species is near-endemic to northwestern Baja California, with a small population just north of the border in San Ysidro, California. It produces a much-branched inflorescence of white, urn-shaped flowers, and has leathery leaves that appear opposite or in whorls. These characteristics separate it from its close relatives in the region, which include manzanitas (Arctostaphylos), summer holly (Comarostaphylis) and mission manzanita (Xylococcus).
Harfordia macroptera is a woody perennial in the family Polygonaceae commonly known as rabbit's purse. It is the sole species in the genus Harfordia, which is endemic to the Baja California Peninsula. This plant is characterized by a unique, conspicuous bladder embellished with red to purple veins that surround the fruit. The sac-like structure is actually a dramatically modified bract, and assists in dispersal of the seeds through the wind.
Euphorbia misera is a semi-succulent shrub in the genus Euphorbia commonly known as the cliff spurge or coast spurge. A drought-deciduous shrub, it is typically found as a gnarled, straggly plant occupying seashore bluffs, hills and deserts. Like other members of its genus, it has a milky sap, which can be found exuding out of the light gray bark when damaged. The alternately-arranged leaves are round and folded in the middle, with small hairs on them. The "flowers" can be found blooming year-round, and are colored maroon or yellow in the center with 5 white to light-yellow petal-like appendages attached outside. This species is native to the Baja California peninsula and Sonora in Mexico, and the coast of southern California in the United States, where it is a rare species. It is threatened in some localities by the development of its coastal habitat, which tends to be prime locations for high-end residential and commercial developments.
Hazardia cana is a rare North American species of shrubs in the family Asteraceae known by the common names Guadalupe hazardia, San Clemente Island hazardia, or simply island hazardia. It is native to San Clemente Island, one of the Channel Islands of California, and to Guadalupe Island.
Hazardia squarrosa is a North American species of shrub in the family Asteraceae known by the common name sawtooth goldenbush. It is native to California in the United States and Baja California in Mexico.
Ceanothus verrucosus is a species of shrub in the family Rhamnaceae known by the common names wart-stem ceanothus, barranca brush, coast lilac and white coast ceanothus. It is endemic to northwestern Baja California and San Diego County, where it grows in coastal sage scrub and coastal succulent scrub habitats. It is considered a rare species north of the international border, as most of the valuable coastal land that hosts this plant in the San Diego area has been claimed for development. In California, several extant populations still remain scattered around the region, such as one protected at Torrey Pines.
Cylindropuntia californica is a species of cholla cactus known by the common name snake cholla. It is primarily found in Baja California, Mexico and the southernmost part of California in the United States. It is characterized by a short, decumbent habit, yellow-green flowers, elongated stems, and short spines. It is mostly found in coastal sage scrub and coastal chaparral habitats, but two varieties in Baja California can be found in foothills and deserts. In California, variety californica is regarded as a rare and threatened plant, with a California Native Plant Society listing of 1B.1, in part due to its limited number of occurrences and threats from development. It formerly was considered to have a larger range due to the inclusion of Cylindropuntia bernardina within it as the variety parkeri.
Bahiopsis laciniata is a species of flowering plant in the family Asteraceae known by the common names San Diego County sunflower, San Diego viguiera and tornleaf goldeneye. It is native to the deserts and dry mountain slopes of northwestern Mexico, its distribution extending north as far as Ventura County, California.
Hazardia orcuttii is a rare North American species of flowering plant in the family Asteraceae known by the common names Orcutt's bristleweed and Orcutt's goldenbush. It is native to California in the United States and Baja California in Mexico. It can be found in one location in California, in the city of Encinitas. There, it is located in and near a protected zone known as the Manchester Conservation Area. In Baja California it can be found at 11 to 17 locations.
Hazardia rosarica is a Mexican species of shrub in the family Asteraceae.
Encelia densifolia is a species of perennial shrub in the sunflower family commonly known as the Vizcaino encelia. This species is endemic to the Vizcaino Peninsula of Baja California Sur, Mexico.
Nahuatlea aborescens is a species of tree in the Composite family endemic to the Cape region and Cerralvo Island of Baja California Sur, commonly known as ocote. It grows up to 8 meters tall, with monoecious tan-colored flowers and short, leafy branchlets. It was formerly in the genus Gochnatia, where it was known commonly as the tree gochnatia.
Convolvulus simulans is a species of annual plant in the morning glory family known as the small-flowered morning-glory and small-flowered bindweed. It is an inconspicuous vining plant that is characterized by tiny pale pink or pale blue bell-shaped flowers. It is typically restricted to clay and serpentine substrates in annual grassland, coastal sage scrub and chaparral habitats. This species is native to Arizona, California, and Baja California. Some taxonomies place this species under Convolvulus equitans.
Justicia purpusii is a species of flowering plant in the Acanthus family commonly known as Purpus' hummingbird flower or chuparosa. This shrub is characterized by long orange-red tubular flowers that bloom from November to April. It is endemic to the Cape region of Baja California Sur, Mexico, where it is found growing in tropical deciduous forest and thorn scrub in canyons and along wet slopes. It is similar to its more northern relative adapted to drier climates, Justicia californica. Phylogenetic analysis has shown that both species are closely related and form a clade.
Stachys stebbinsii is a species of perennial herb in the mint family commonly known as Stebbins' hedgenettle. This plant is characterized by a musky aroma, flowers with large lower lips, and glandular hairs that densely cover the stems. S. stebbinsii is native to California and northwestern Baja California. It is usually found growing in moist places in a wide variety of habitats including disturbed areas, chaparral, coastal sage scrub and mountains.
Gambelia juncea is a species of flowering shrub in the plantain family commonly known as the Baja California bush snapdragon or Baja bush snapdragon. Gambelia juncea is a highly variable woody perennial to 1 m (3.3 ft) characterized by long, arching, reed-like stems and showy, bright red, two-lipped tubular flowers. Native to the Baja California peninsula and coastal Sonora, this species is widespread in the region across numerous habitats and has several varieties. It was formerly placed in the primarily South American genus Galvezia, but taxonomic studies have supported the reclassification of the two North American species into Gambelia. This species, with a number of cultivars, is widely used as an ornamental shrub for xeriscaping, erosion control, native plant gardens, and wildlife gardens.