achene

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achene

(əkēn`), dry, simple, one-seeded fruit with the seed attached to the inner wall at only one point. Achenes are indehiscent, i.e., they do not split open at maturity. The so-called seed of a sunflower is an achene; the shell is the wall of the fruit, and the true seed lies within. A strawberry consists of many achenes embedded in a fleshy receptacle.

Achene

 

a monospermous indehiscent fruit of angiospermous plants. An achene consists of two carpels with an inferior ovary; it has a dry, leathery pericarp (in Compositae and Dipsacaceae). Winglike processes, pappi, hooklets, and other formations often develop to promote distribution of the fruit. The achene of Dipsacaceae falls off with a sheath of concresced bracts; in some Compositae (cocklebur, globe thistle) the achene falls off with the sheath of the head.

achene

[ə′kēn]
(botany)
A small, dry, indehiscent fruit formed from a simple ovary bearing a single seed.
References in periodicals archive ?
The two taxa are easily separated since the achenes of S.
A one-way ANOVA with pollination treatment as a fixed effect was applied to data for production of achenes per capitulum for E.
1D), differs from the mainland species by having appreciably smaller perigynia, a shorter cylindrical perigynium beak, and achenes with shorter stipes (see Fig.
Oil concentration and fatty acid composition of achenes of Helianthus species (Asteraceae) from Canada.
52) well preserved, light brown with dark brown spots, translucent, flattened from compression by sediment, often forked, bearing several teeth on lower margin; achenes (Fig.
Edwards and Vavasseur (1829) first referred to the seed as an achene.
The flower head having 3-8 unequal rays and the fruit is a three-angled achene.
Achenes of buckwheat (Fagopyrum esculentum) has previously been found from two sites in Finland, namely in Turku from 13th century and in Hameenlinna from 16th century layers (Onnela 2004, 70; Lempiainen T.
Water deficits conditions reduced the head diameter, number of achenes per head, 1000-achenes weight and finally achene yield of sunflower hybrids (Hussain et al.
Wind dispersed pappi carry the achenes as far as 4 m from the parent plant (Keddy and Keddy, 1984; Loveless and Hamrick, 1984).
Time-course changes in the inorganic and organic componenets of germinating sunflower achenes under salt (NaCl) stress.