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Common name: Rhabdodendron Family.
Number of genera 1. Number of species 3 (Rhabdodendron amazonicum (Spruce ex Benth.) Huber, R. gardneranum (Benth.) Sandwith, R. macrophyllum (Spruce ex Benth.) Huber).
Angiosperm. Magnoliopsida.
Disseminule an intact or entire fruit.
Fruits
Pistil(s) compound; 1; 1-pistillate; with carpels united. Fruit pericarpium; simple; nuculanium (Spjut), or drupe (of authors); without persistent central column; with styles(s); at apex; within accessory organ(s); within hypanthium (reddish); accrescent; persistent; with hypanthium cupular; with hypanthium composed of 1 layer (assumed); 1-seeded; 1-seeded; less than 1 cm long; 0.8 cm long; 1-carpellate; not sulcate; in transection terete; apex not beaked; indehiscent. Epicarp green; durable; crustaceous; glabrous (without hairs); without armature; without wing(s); without apical respiratory hole. Mesocarp present; thin and fleshy; composed of 1 unified layer; without lactiform cavity system. Endocarp present; not separating from exocarp; woody (slightly); not splitting into 1-seeded pyrenes; without wing; without operculum; without secretory cavities; without mechanism for seedling escape; without grooves; without longitudinal ridges. Funiculus short; short without seed bearing hooks (retinacula); not persisting in fruit after seed shed.
Seeds
Aril absent. Seed reniform (-globose); not bowl shaped; not nutlike; without winglike beak; without caudate appendage(s); at maturity without food reserves; without canavanine. Sarcotesta absent. Testa present; without markedly different marginal tissue; without fleshy or leathery layer over hard layer; without glands; without bristles; glabrous; without wings; without collar; without operculum; colored; monochrome; thin; not becoming mucilaginous when wetted; surrounding embryo.
Embryo differentiated from food reserve; well developed; 1 per seed; completely filling testa (no food reserve); 1 times the length of food reserve; at one end of seed not extending into a depression or cup; bent (based on radicle position); parallel to seed length; without coleorhiza; without simmondsin; without stomata; not green; with 2 or more cotyledons. Cotyledons 2; well developed; measure; not foliaceous; thick (fleshy & conferruminate); not punctate dotted. Hypocotyl-radicle small; straight; not thickened.
Distribution
New World. South America (tropical).
Notes
Goldberg did not cover this family.
Weed information
No USA noxious weeds.
Listed seeds
No ASOA or ISTA listed seeds.
Accepted genera
Rhabdodendron Gilg & Pilg.
References specific to this family
Cronquist page 585.
General references
Cronquist, A. 1981. An integrated system of classification of flowering plants, 1,262 p. Columbia University Press, New York, Flora Neotropica. 1968–74. Nos. 1–14. Hafner Publishing Company, Darien and 1976-. Nos. 15-present. New York Botanical Garden, Bronx [monograph number], 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 fruit and poor seed illustrations. Cronquist has no illustration. Disseminule illustration(s): fruit, or seed, or embryo. Fruit illustration(s): Roosmalen. Seed illustration(s): Karen. Embryo illustration(s): Karen. Karen's plate number and taxon (taxa): 179: [No rough thus no species name] (A-B).
• Fruit. 1 of 3. Rhabdodendron amazonicum (Spruce ex Benth.) Huber: fruits with peduncle. • Seed. 2 of 3. Rhabdodendron amazonicum (Spruce ex Benth.) Huber: seed. • Embryo. 3 of 3. Rhabodendron macrophyllum (spruce ex Benth.) Huber: 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’.
