- Foliage
- Flower
- Berries
- Gall produced by Diastrophus kincaidii
Thimbleberry | |
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Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Rosales |
Family: | Rosaceae |
Genus: | Rubus |
Subgenus: | Rubus subg. Anoplobatus |
Species: | R. parviflorus |
Binomial name | |
Rubus parviflorus Nutt. 1818 | |
Synonyms [1] | |
Synonymy
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Rubus parviflorus, commonly called thimbleberry, [2] (also known as redcaps) is a species of Rubus native to northern temperate regions of North America. The plant has large hairy leaves and no thorns. It bears edible red fruit similar in appearance to a raspberry, but shorter, almost hemispherical. It has not been commercially developed for the retail berry market, but is cultivated for landscapes.
Rubus parviflorus is a dense shrub up to 2.5 meters (8 feet) tall with canes no more than 1.5 centimeters (1⁄2 inch) in diameter, often growing in large clumps which spread through the plant's underground rhizome. Unlike many other members of the genus, it has no prickles. The leaves are palmate, up to 20 cm (8 in) across (much larger than most other Rubus species), with five lobes; they are soft and fuzzy in texture. [3] [4] [5] [6]
The flowers are 2 to 6 cm (3⁄4 to 2+1⁄4 in) in diameter, with five white petals and numerous pale yellow stamens. The flower of this species is among the largest of any Rubus species. [7] [3]
The plant produces edible composite fruit approximately 1 cm (1⁄2 in) in diameter, which ripen to a bright red in mid to late summer. Like raspberries, it is not a true berry, but instead an aggregate fruit of numerous drupelets around a central core. The drupelets may be carefully removed intact, separately from the core, when picked, leaving a hollow fruit which bears a resemblance to a thimble, perhaps giving the plant its name. [3] [8]
The specific epithet parviflorus ("small-flowered") is a misnomer, since the species' flower is the largest of the genus. [7] [3] The Concow tribe calls the plant wä-sā’ (Konkow language). [9]
Rubus parviflorus is native to western North America from Alaska south as far as California, New Mexico, Chihuahua, and San Luis Potosí. Its range extends east to the Rocky Mountains and discontinuously to the Great Lakes Region. It grows from sea level in the north, up to elevations of 3,000 m (10,000 ft) in the south. [10] [11] [12]
R. parviflorus typically grows along roadsides, railroad tracks, and in forest clearings, commonly appearing as an early part of the ecological succession in clear cut and forest fire areas.
Thimbleberry is found in forest understories with typical flora associates including coastal woodfern (Dryopteris arguta), Trillium ovatum and Smilacina racemosa . [13]
The fruit is consumed by birds and bears, while black-tailed deer browse the young leaves and stems. [14] Larvae of the wasp species Diastrophus kincaidii (thimbleberry gallmaker) [15] develop in large, swollen galls on R. parviflorus stems. [16] An aphid of genus Masonaphis and a midge of genus Dasineura also induce thimbleberry galls, on the leaves and petioles respectively. [17]
R. parviflorus is cultivated by specialty plant nurseries as an ornamental plant, used in traditional, native plant, and wildlife gardens, in natural landscaping design, and in habitat restoration projects. The fruit has fragrance. [18] Thimbleberry plants can be propagated most successfully by planting dormant rhizome segments, as well as from seeds or stem cuttings.
The flowers support pollinators, including of special value to native bees, honeybees, and bumblebees. [7] The fruit is attractive to various birds and mammals, including bears. [7] [19] It is the larval host and a nectar source for the yellow-banded sphinx moth. [7]
Cultivars of the plant are selected for ornamental qualities, such as for their fragrant flowers and/or attractive fall foliage color. [20]
A double-flowered form of the thimbleberry was discovered near Squamish, British Columbia, by Iva Angerman (1903–2008) of West Vancouver. [21] This clone does not appear to be in commerce, but is grown in the Botanic Garden of the University of British Columbia, Vancouver, and in the Native Plant Garden of the Royal British Columbia Museum, Victoria.
Thimbleberry fruits are flatter and softer (more fragile) than raspberries, but similarly have many small seeds. Because the fruit is so soft, it does not pack or ship well, so thimbleberries are rarely cultivated commercially. [22]
Wild thimbleberries can be eaten raw or dried (the water content of ripe thimbleberries is quite variable), and can be made into a jam [23] which is sold as a local delicacy in some parts of their range, notably in the Keweenaw Peninsula of Upper Michigan. [24]
Many parts of the plant were used in folk medicine by Native Americans. [23] [20] [25] A tea made from its leaves or roots was thought to be a treatment for wounds, burns, acne, or digestive problems; [26] a tea made from the canes was thought to be useful as a diuretic. [27] As of 2019, there is no evidence from modern clinical research or practice that R. parviflorus is effective for treating any disease.
Thimbleberry leaves can be used in place of toilet paper when in the wilderness. [26]
Rubus is a large and diverse genus of flowering plants in the rose family, Rosaceae, subfamily Rosoideae, with over 1,350 species, commonly known as brambles.
Rubus idaeus is a red-fruited species of Rubus native to Europe and northern Asia and commonly cultivated in other temperate regions.
Rubus spectabilis, the salmonberry, is a species of bramble in the rose family Rosaceae, native to the west coast of North America from west-central Alaska to California, inland as far as Idaho. Like many other species in the genus Rubus, the salmonberry plant bears edible fruit, typically yellow-orange or red in color, resembling raspberries in appearance.
Rubus phoenicolasius is an Asian species of raspberry in the rose family, native to China, Japan, and Korea.
Rubus occidentalis is a species of Rubus native to eastern North America. Its common name black raspberry is shared with other closely related species. Other names occasionally used include bear's eye blackberry, black cap, black cap raspberry, and scotch cap.
Rubus odoratus, the purple-flowered raspberry, flowering raspberry, or Virginia raspberry, is a species of Rubus, native to eastern North America, from Nova Scotia west to Ontario and Wisconsin, and south along the Appalachian Mountains as far as Georgia and Alabama.
Maianthemum racemosum, the treacleberry, feathery false lily of the valley, false Solomon's seal, Solomon's plume or false spikenard, is a species of flowering plant native to North America. It is a common, widespread plant with numerous common names and synonyms, known from every US state except Hawaii, and from every Canadian province and territory, as well as from Mexico.
Rubus leucodermis, also called whitebark raspberry, blackcap raspberry, or blue raspberry, is a species of Rubus native to western North America.
Rubus strigosus, the American red raspberry or American raspberry, is a species of Rubus native to much of North America. It was often treated as a variety or subspecies of the closely related Eurasian Rubus idaeus, but is now more commonly treated as a distinct species. Many of the commercial raspberry cultivars grown for their fruit derive from hybrids between R. strigosus and R. idaeus; see Raspberry for more details.
Rubus armeniacus, the Himalayan blackberry or Armenian blackberry, is a species of Rubus in the blackberry group Rubus subgenus Rubus series Discolores Focke. It is native to Armenia and northern Iran, and widely invasive elsewhere. Both its scientific name and origin have been the subject of much confusion, with much of the literature referring to it as either Rubus procerus or Rubus discolor, and often mistakenly citing its origin as western European. Flora of North America, published in 2014, considers the taxonomy unsettled, and tentatively uses the older name Rubus bifrons.
Dryopteris arguta, with the common name coastal woodfern, is a species of wood fern. It is native to the west coast and western interior mountain ranges of North America, from British Columbia, throughout California, and into Arizona.
Rubus ursinus is a North American species of blackberry or dewberry, known by the common names California blackberry, California dewberry, Douglas berry, Pacific blackberry, Pacific dewberry and trailing blackberry.
Rubus rosifolius,, also known as roseleaf bramble, Mauritius raspberry, thimbleberry,Vanuatu raspberry and bramble of the Cape is a prickly subshrub native to rainforest and tall open forest of the Himalayas, East Asia, and eastern Australia.
Rubus repens(dewdrop, false violet, star violet, Robin runaway. French Canadian: dalibarde rampante) is a perennial plant in the rose family, native to eastern and central Canada and to the northeastern and north-central United States. It is part of the genus Rubus, which includes brambles, blackberries, and raspberries. Some authorities consider it the sole member of a separate genus, Dalibarda. It is fairly easily grown in shady locations in damp to wet, acidic soils, and is frequently used in wildflower and bog gardens as a ground-cover.
Prosartes hookeri is a North American species of flowering plants in the lily family known by the common names drops of gold and Hooker's fairy bells.
Rubus pubescens is a herbaceous perennial widespread across much of Canada and the northern United States, from Alaska to Newfoundland, south as far as Oregon, Colorado, and West Virginia.
Rubus pedatus is an Asian and North American species of raspberry known under the common names five-leaved bramble, strawberryleaf raspberry and creeping raspberry.
Rubus illecebrosus is a red-fruited species of Rubus that originally came from Japan, but is also very popular in some European countries like Lithuania. Common names include balloon berry and strawberry raspberry. It has become sparingly naturalized in scattered locations in Canada, the United States, and South America.
Rubus tricolor is an evergreen prostrate shrub, native to southwestern China. Leaves are dark green above, pale green below, and stems have red bristles. It has white flowers in summer and edible red fruit. It grows approximately 0.3 m (0.98 ft) high and usually forming a vigorously spreading, dense mat. In cultivation, it is mainly used as groundcover. Common names include Chinese bramble, groundcover bramble, creeping bramble, Korean raspberry, Himalayan bramble, and groundcover raspberry. In Chinese, it is called 三色莓.
Rubus fraxinifolius, also known as mountain raspberry in English or ragimot, is a species of flowering and fruiting shrub in the raspberry family. It is native to tropical islands of Southeast Asia from Taiwan through the Philippines to New Guinea and the Solomon Islands in the Melanesia region.