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Common name: Eupomatia Family.
Number of genera 1. Number of species 2 (Eupomatia bennettii F. Muell. & E. laurina R. Br.).
Angiosperm. Magnoliopsida.
Disseminule an intact or entire fruit.
Fruits
Pistil(s) 11–20 to more than 21; 13–68-pistillate. Fruit anthocarp, or pericarpium; simple; achene (of authors for individual fruits within receptacle, but not Spjut), or berry (of authors of aggregate fruits in receptacle, but not Spjut); berry indehiscent; berry without central placental mass; multiple; pometum; without persistent central column; crowned by rim (calyptra scar) (& flat-topped); within accessory organ(s); within hypanthium; connate; persistent; with hypanthium achenes; with hypanthium cupular; with hypanthium wall distinct from fruit wall; with hypanthium fleshy; many-seeded (collectively); many - collectively; 13–68-carpellate (collectively); with carpels separate; with carpels remaining united at maturity; with carpels not radiating at maturity; without sterile carpels; sulcate; in transection terete; apex not beaked; wall fleshy (collectively); indehiscent. Epicarp durable; without armature; collectively but individual fruit are winged without wing(s), or with wing(s); without apical respiratory hole. Mesocarp absent. Endocarp absent. Funiculus short; short without seed bearing hooks (retinacula); not persisting in fruit after seed shed.
Seeds
Aril absent. Seed larger than minute; 1 to less than 5 mm long, or 5 to less than 10 mm long; 5–6 mm long; oblong and straight, or angular (sub); not bowl shaped; not nutlike; without winglike beak; without caudate appendage(s); at maturity with food reserves; with endosperm; without canavanine. Sarcotesta absent. Testa present; without fleshy or leathery layer over hard layer; tight; surface unsmooth; surface with depressed features; surface shallowly pitted; 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; without wings; without collar; without operculum; colored; monochrome; brown (all shades), or yellow, or cream; not becoming mucilaginous when wetted; surrounding food reserve. Endosperm copious; ruminate; with oils; without fatty acid containing cyclopropene; without apical lobes; without chlorophyll; without isodiametric faceted surface; without odor.
Embryo differentiated from food reserve; well developed; 1 per seed; partially filling testa (with food reserve); 0.1–0.2 times the length of food reserve; at one end of seed not extending into a depression or cup; basal; conical (essentially); parallel to seed length; with cotyledons gradually connected to hypocotyl-radicle; without coleorhiza; without simmondsin; without stomata; not green; with 2 or more cotyledons. Cotyledons 2; well developed; 0.5 times length of embryo; somewhat to significantly wider than hypocotyl-radicle; 1.25 times wider than hypocotyl-radicle; not foliaceous; thin; flat; with apices entire; with margins separate; basally entire; equal in size; not punctate dotted. Hypocotyl-radicle well developed; not thickened.
Distribution
Old World. Australia (eastern), Oceania (New Guinea).
Weed information
No USA noxious weeds.
Listed seeds
No ASOA or ISTA listed seeds.
Accepted genera
Eupomatia R. Br.
References specific to this family
Cronquist page 44.
General references
Airy Shaw, H.K. 1973. A dictionary of the flowering plants and ferns, 1,131 pp. University Press, Cambridge, Baillon, H.E. 1866–95. Histoire des plantes, 13 vols. Hachette and Co., Paris, Corner, E.J.H. 1976. The seeds of Dicots, esp. vol. 2. Cambridge University Press, New York, Cronquist, A. 1981. An integrated system of classification of flowering plants, 1,262 p. Columbia University Press, New York, 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.
Illustrations
Acceptable fruit and seed illustrations. Disseminule illustration(s): fruit, or seed, or embryo. Fruit illustration(s): Morley & Toelken (1983), Baillon, Cronquist. Seed illustration(s): Karen. Embryo illustration(s): Karen. Karen's plate number and taxon (taxa): 004: Eupomatia laurina R. Br. (A-C).
• Fruit. 1 of 3. Eupomatia laurina R. Br.: fruits. • Seed. 2 of 3. Eupomatia laurina R. Br.: seeds. • Embryo. 3 of 3. Eupomatia laurina R. Br.: 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’.
