regmacarp

English

Etymology

From Ancient Greek ῥῆγμα (rhêgma, “something broken or rent asunder; a breach, cleft, fracture”) +‎ -carp (“suffix meaning ‘part of a fruit or fruiting body’”), by analogy with schizocarp. The word was probably coined by Scottish physician and botanist William Ramsay McNab (1844–1889): see the 1871 article from the journal Nature quoted below.

Pronunciation

Noun

regmacarp (plural regmacarps)

  1. (botany, dated, rare) Any dehiscent fruit. [from 1871]
    • 1871 October 12, W[illiam] R[amsay] McNab, “Remarks on the Classification of Fruits”, in Nature: A Weekly Illustrated Journal of Science, volume IV, London; New York, N.Y.: Macmillan and Co., OCLC 421885057, page 475, column 2:
      Taking the word Schizocarp as a type, I venture to suggest the term Achænocarp for the group of Achænes as used by Dr. [Alexander] Dickson, thus avoiding all confusion, and allowing the term Achæne to remain in its restricted sense. Regmacarp I would apply to the group of capsules, using the term capsule for one division of the group. […] The derivation of these terms at once explains their application. […] Regmacarp from regma, a rupture, in allusion to the dehiscence. […] In using these terms I would employ them in the following manner:— […] II. Dry Dehiscent Fruits. 3. Regmacarps. A. Follicle. Simple, dehisces by one suture. […]
    • 1874, Robert Brown, “The Fruit”, in A Manual of Botany: Anatomical and Physiological: For the Use of Students, Edinburgh; London: William Blackwood and Sons, OCLC 20284252, pages 482–483:
      The truth is, that it is impossible to find a classification of fruits which is founded on strictly scientific principles—the forms merging into each another; […] Accordingly, in the following classification, in which we have mainly followed Dr [Maxwell Tylden] Masters, all the less easily defined forms are omitted, and the list reduced as much as possible, without at all destroying its usefulness. […] monothalmic fruits. A. Ripe pericarp uniform. […] Fruits dehiscent.—II. Pods, or Regmacarps—viz., Follicle, Legume, Siliqua, Capsule, Pyxis.
    • 1879, Asa Gray, “The Fruit”, in The Botanical Text-book. Part I. Structural Botany or Organography on the Basis of Morphology. To which is Added the Principles of Taxonomy and Phytography, and a Glossary of Botanical Terms, 6th edition, London: Macmillan and Company, OCLC 222480275, section II (The Kinds of Fruit), paragraph 555, footnote 1, page 292:
      Dr. Master's [i.e., Maxwell T. Masters'] modification of [Alexander] Dickson's and [William Ramsay] McNab's classification of simple fruits, as to primary kinds, is into 1. Nuts, or Achænocarps, dry and indehiscent; 2. Pods, or Regmacarps, dry, dehiscent; 3. Stone-fruits, or Pyrenocarps, fleshy without, indurated within, indehiscent; 4. Berries, or Sarcocarps, fleshy throughout, indehiscent.

Further reading
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