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Synonyms: Achratinitaceae F. A. Barkley, nom. nud.
Common name: Corsia Family.
Number of genera 3. Number of species 26.
Angiosperm. Liliopsida.
Disseminule a dehisced fruit, or a seed.
Fruits
Pistil(s) compound; 1; 1-pistillate; with carpels united. Fruit anthocarp, or pericarpium; simple; capsule (of authors, but not Spjut); loculicidal capsule (not Spjut); capsule not inflated; capsule without operculum; simple; diclesium (noted by Spjut on pages 26 (key) & 174 (index), but not listed in text for diclesium); without persistent central column; not within accessory organ(s); many-seeded; many; 3-carpellate; with carpels united; with carpels remaining united at maturity; without sterile carpels; apex not beaked; dehiscent. Dehiscent unit seed(s). Dehiscent regularly; passively (assumed); at apex; and shedding seeds; without replum. Epicarp dull; durable; glabrous (without hairs); without armature; without wing(s); without apical respiratory hole. Mesocarp absent. Endocarp present; not separating from exocarp; thin; not splitting into 1-seeded pyrenes; smooth; without wing; without operculum; without secretory cavities; without mechanism for seedling escape; without grooves; without longitudinal ridges. Funiculus long (Goldberg); short without seed bearing hooks (retinacula); not persisting in fruit after seed shed.
Seeds
Aril absent. Seed minute; not bowl shaped; not nutlike; without winglike beak; with caudate appendage(s) (with "wing"); at maturity with food reserves; with endosperm; without canavanine. Sarcotesta absent. Testa present; without fleshy or leathery layer over hard layer; loose, or tight; surface unsmooth; surface with depressed features, or merged raised features; surface obscurely longitudinally grooved; surface reticulate; without crease or line separating cotyledons from hypocotyl-radicle; without notch along margin where cotyledons from hypocotyl-radicle tip approach each other; without glands; without bristles; glabrous; with wing(s); 2-winged; with wings at both ends; with wing(s) solid; with solid wing(s) similar to testa; without collar; without operculum; colored; monochrome; not becoming mucilaginous when wetted; surrounding embryo, or surrounding food reserve. Hilum punctate. Endosperm scant (very); without fatty acid containing cyclopropene; without apical lobes; without chlorophyll; without isodiametric faceted surface; without odor.
Embryo undifferentiated from food reserve; well developed; acotyledonous.
Distribution
New World, Old World. South America (Arachnitis: Chile), southeastern Asia (Corsia: New Guinea).
Weed information
No USA noxious weeds.
Listed seeds
No ASOA or ISTA listed seeds.
Accepted genera
Arachnitis Phil., nom. cons. -- Corsia Becc. -- Corsiopsis D. X. Zhang et al.
References specific to this family
Cronquist page 1237.
General references
Cronquist, A. 1981. An integrated system of classification of flowering plants, 1,262 p. Columbia University Press, New York, Dahlgren, R.M.T., H.T. Clifford and P.F. Yeo. 1985. The families of the monocotyledons, 520 pp. Springer-Verlag, Berlin, Goldberg, A. 1986 (dicots) and 1989 (monocots). Classification, evolution, and phylogeny of the familes of Dicotyledons. Smithsonian Contr. Bot. 58 for dicots (314 pp.) and 71 for monocots (74 pp.). [Goldberg's illustrations are reproduced from older publications and these should be consulted], Gunn, C.R., J.H. Wiersema, C.A. Ritchie, and J.H. Kirkbride, Jr. 1992 and amendments. Families and genera of Spermatophytes recognized by the Agricultural Research Service. Techn. Bull. U.S.D.A. 1796:1–500, Mabberley, D.J. 1987. The plant-book, 706 p. Cambridge University Press, Cambridge, Spjut, R.W. 1994. A systematic treatment of fruit types. Mem. New York Bot. Gard. 70:1–182.
Illustrations
No F and acceptable seed illustrations. Cronquist has no illustration. Disseminule illustration(s): seed, or embryo. Seed illustration(s): Dahlgren et al., Karen. Embryo illustration(s): Karen [no embryo ?]. Karen's plate number and taxon (taxa): 383: Corsia ornata Becc. (A-B).
• Fruit. 1 of 3. Corsia ornata Becc.: fruits. • Seed. 2 of 3. Corsia ornata Becc.: seeds. • Embryo. 3 of 3. Corsia ornata Becc.: embryo.
We advise against extracting comparative information from the descriptions. This is much more easily achieved using the DELTA data files or the interactive key, which allows access to the character list, illustrations, full and partial descriptions, diagnostic descriptions, differences and similarities between taxa, lists of taxa exhibiting or lacking specified attributes, and distributions of character states within any set of taxa. See also Guidelines for using data taken from Web publications.
Cite this publication as: ‘J.H. Kirkbride, Jr., C.R. Gunn, and M.J. Dallwitz. 2000 onwards. Family guide for fruits and seeds: descriptions, illustrations, identification, and information retrieval. Version: 12th April 2021. delta-intkey.com’.
