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Geum aleppicum

(Yellow Avens)

Overview

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Interesting Facts

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Common Names

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Click on the language to view common names.

Common Names in Chinese:

Lu Bian Qing

Common Names in English:

Yellow Avens, Aleppo Avens

Description

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Family Rosaceae

Trees , shrubs , or herbs, deciduous or evergreen . Stems erect , scandent , arching , prostrate , or creeping , armed or unarmed . Buds usually with several exposed scales , sometimes with only 2. Leaves alternate, rarely opposite, simple or compound ; stipules paired , free or adnate to petiole , rarely absent, persistent or deciduous; petiole usually 2-glandular apically; leaf blade often serrate at margin , rarely entire. Inflorescences various, from single flowers to umbellate , corymbose , racemose or cymose-paniculate. Flowers usually actinomorphic , bisexual , rarely unisexual and then plants dioecious. Hypanthium (formed from basal parts of sepals, petals, and stamens) free from or adnate to ovary, short or elongate . Sepals usually 5, rarely fewer or more, imbricate; epicalyx segments sometimes also present. Petals as many as sepals, inserted below margin of disk, free, imbricate, sometimes absent. Disk lining hypanthium, usually entire, rarely lobed . Stamens usually numerous , rarely few, always in a complete ring at margin of or above disk; filaments usually free, very rarely connate ; anthers small, didymous , rarely elongate, 2-locular. Carpels 1 to many, free, or ± connate and then adnate to inner surface of cupular receptacle; ovary inferior, semi-inferior, or superior; ovules usually 2 in each carpel, rarely 1 or several, anatropous , superposed . Styles as many as carpels, terminal , lateral , or basal, free or sometimes connate. Fruit a follicle, pome, achene, or drupe, rarely a capsule, naked or enclosed in persistent hypanthium and sometimes also by sepals. Seeds erect or pendulous, sometimes winged , usually exalbuminous , very rarely with thin endosperm; cotyledons mostly fleshy and convex abaxially, rarely folded or convolute.

Between 95 and 125 genera and 2825-3500 species: cosmopolitan , mostly in N temperate zone; 55 genera (two endemic) and 950 species (546 endemic) in China.

Many plants of this family are of economic importance and contribute to people s livelihoods. The Rosaceae contain a great number of fruit trees of temperate regions . The fruits contain vitamins, acids, and sugars and can be used both raw and for making preserves, jam, jelly, candy, various drinks, wine, vinegar, etc. The dried fruits of the genera

Amygdalus and Armeniaca are of high commercial value. Some plants in the genus Rosa containing essential oils or with a high vitamin content are used in industry . Rosaceae wood is used for making various articles, stems and roots are used for making tannin extract, and young leaves are used as a substitute for tea. Numerous species are used for medical purposes or are cultivated as ornamentals .

The Rosaceae are very well represented in China, with great economic and scientific importance. The Co-chairs of the Editorial Committee (Wu and Raven) here note that the patterns of relationship are complex and the group is taxonomically difficult. [1]

Genus Geum

Herbs perennial , rhizomatous , sometimes stoloniferous . Stipules adnate to and sheathing petiole ; radical leaves pinnate or pseudopinnate; terminal leaflet largest; lateral leaflets often in alternating larger and smaller pairs; cauline leaves few, often 3-foliolate or bractlike. Flowers solitary or in corymbs, bisexual . Hypanthium turbinate or hemispheric . Sepals 5, valvate , persistent ; epicalyx segments 5, small, alternate with sepals. Petals 5, yellow, white, or red, orbicular or obovate . Stamens numerous , crowded. Disk lining hypanthium, smooth or ribbed . Carpels numerous, borne on prominent , usually cylindric receptacle, free ; ovule ascending ; style filiform , jointed ; stigma slightly recurved or hooked , minute. Achenes sessile or stipitate , small, hooked at apex of beak . Seed erect ; testa membranous; cotyledons oblong . x = 7.

About 70 species: widespread in temperate zones of both hemispheres; three species in China.[2]

Physical Description

Species Geum aleppicum

Roots fascicled, fibrous . Stems erect , 30-100 cm tall, together with petioles spreading rigid hairy , rarely glabrescent . Radical leaves lyrate-pinnate, 5-15 cm including petiole, usually with 2-6 pairs of leaflets , both surfaces sparsely rigid hairy; leaflets unequal, terminal one largest, broadly rhombic-ovate or compressed orbicular , 4-15 × 5-15 cm, base broadly cordate to cuneate, margin usually irregularly coarsely serrate, apex obtuse or acute; cauline leaves: stipules green, leaflike, ovate , large, margin irregularly coarsely serrate; leaf blade pinnate, sometimes repeatedly lobed ; terminal leaflet lanceolate or obovate-lanceolate, base cuneate, apex often acuminate or shortly so. Inflorescence terminal, lax . Flowers 1-1.7 cm in diam.; pedicel pubescent or hirtellous. Sepals ovate-triangular, apex acuminate; epicalyx segments lanceolate, minute, ca. 1/2 as long as sepals, abaxially pubescent and villous , apex acuminate, rarely 2-fid. Petals yellow, suborbicular , longer than sepals. Style terminal, twisted at joint ca. 1/4 way from apex; proximal section pilose ; distal section deciduous at fruit maturity. Achene aggregate obovoid ; fruiting receptacle hispidulous , hairs ca. 1 mm; achenes hirtellous; proximal section of style persistent, glabrous , apex hooked . Fl. and fr. Jul-Oct. [source]

Habit: Forb/herb

Flowers: Bloom Period: June. • Flower Color: yellow

Size/Age/Growth

Size: 12-18" tall.

Habitat

Forests , open places in forests, grassy mountain slopes , river and stream banks, fields ; 200--3500 m [3].

Typically found at an altitude of 0 to 4,737 meters (0 to 15,541 feet).[4]

Biology

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Reproduction

Duration: Perennial

Growth

Culture: Space 12-15" apart.

Soil: Minimum pH: 6.1 • Maximum pH: 7.8

Sunlight: Sun Exposure: Full Sun .

Temperature: Cold Hardiness: 3a, 3b, 4a, 4b, 5a, 5b, 6a, 6b, 7a, 7b, 8a, 8b. (map)

Taxonomy

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Synonyms

G. intermedium Besser ex Marschall von Bieberstein (1808) • G. potaninii Juzepczuk • G. strictum Aiton • G. strictum var. bipinnatum Batalin • G. vidalii Franchet & Savatier. • Geum aleppicum strictum (Sol.) R. T. Clausen • Geum aleppicum var. bipinnatum (Batalin) Handel-Mazzetti • Geum aleppicum var. strictum (Sol.) Fernald • Geum intermedium Ledeb. • Geum potaninii Juz. • Geum ranunculoides Ser. • Geum strictum Sol. • Geum strictum var. bipinnata Batalin • Geum strictum var. decurrens (Rydb.) Kearney & Peebles

Notes

Name Status: Accepted Name .

Similar Species

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Members of the genus Geum

ZipcodeZoo has pages for 59 species, subspecies, varieties, forms, and cultivars in this genus:

G. aleppicum (Yellow Avens) · G. aleppicum var. cuneatum (Yellow Avens) · G. aurantiacum (Avens) · G. calthifolium (Caltha-Leaf Avens) · G. canadense (White Avens) · G. canadense var. brevipes (White Avens) · G. canadense var. camporum (White Avens) · G. canadense var. grimesii (Grand Birch) · G. canadense var. texanum (Texan Avens) · G. chiloense (Avens) · G. chiloense 'Lady Stratheden' (Lady Stratheden Avens) · G. coccineum (Scarlet Avens) · G. coccineum 'Cooky' (Scarlet Avens) · G. geniculatum (Bent Avens) · G. glaciale (Glacier Avens) · G. laciniatum (Rough Avens) · G. laciniatum var. laciniatum (Rough Avens) · G. macranthum (Avens) · G. macrophyllum (Large Leaf Avens) · G. macrophyllum var. macrophyllum (Largeleaf Avens) · G. magellanicum (Hierba Del Clavo) · G. montanum (Alpine Avens) · G. peckii (Mountain Avens) · G. pentapetalum (Aleutian Avens) · G. pulchrum (Avens) · G. radiatum (Appalachian Avens) · G. rivale (Bog Avens) · G. rivale 'Album' (Bog Avens) · G. rivale 'Leonard's Double' (Bog Avens) · G. rivale 'Leonard's Variety' (Bog Avens) · G. rossii (Ross Avens) · G. rossii var. depressum (Ross' Avens) · G. rossii var. turbinatum (Ross Avens) · G. triflorum (Old Man's Whiskers) · G. triflorum f. ornatum (Old-Man´s-Whiskers) · G. triflorum var. campanulatum (Old Man's Whiskers) · G. triflorum var. canescens (Alpine Old Man's Whiskers) · G. triflorum var. ciliatum (Old Man's Whiskers) · G. urbanum (Avens) · G. urbanum 'Checkmate' (Bennet) · G. vernum (Spring Avens) · G. virginianum (Cream Avens) · G. x aurantiacum (Avens) · G. x heldreichii 'Georgenberg' (Georgenberg Chilean Avens) · G. x macranthum (Avens) · G. x pulchrum (Avens) · G. 'Blazing Sunset' (Avens) · G. 'Borisii' (Boris Avens) · G. 'Coppertone' (Avens) · G. 'Dolly North' (Avens) · G. 'Fireball' (Avens) · G. 'Georgenberg' (Avens) · G. 'Lady Stratheden' (Avens) · G. 'Lemon Drops' (Avens) · G. 'Mango Lassi' (Grecian Rose) · G. 'Mrs J. Bradshaw' (Avens) · G. 'Paso Doble' (Avens) · G. 'Prinses Juliana' (Avens) · G. 'Werner Arends' (Scarlet Avens)

More Info

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Further Reading

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Notes

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Contributors

Data Sources

Accessed through GBIF Data Portal November 14, 2007:

Identifiers

Footnotes

  1. Cuizhi Gu, Chaoluan Li, Lingdi Lu, Shunyuan Jiang, Crinan Alexander, Bruce Bartholomew, Anthony R. Brach, David E. Boufford, Hiroshi Ikeda, Hideaki Ohba, Kenneth R. Robertson & Steven A. Spongberg "Rosaceae". in Flora of China Vol. 9 Page 46. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
  2. Li Chao-luang, Hiroshi Ikeda, Hideaki Ohba "Geum". in Flora of China Vol. 9 Page 286. Published by Science Press (Beijing) and Missouri Botanical Garden Press. Online at EFloras.org. [back]
  3. "Geum". in Flora of China Vol. 9 Page 287. Missouri Botanical Garden Press. Online at EFloras.org. [back]
  4. Mean = 653.450 meters (2,143.865 feet), Standard Deviation = 817.700 based on 674 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 7/15/2012