different between pycnidium vs aecium
pycnidium
English
Etymology
New Latin, from Ancient Greek; see pycno- (“thick”).
Noun
pycnidium (plural pycnidia)
- In certain fungi, a flask-shaped cavity from the surface of the inner walls of which spores are produced.
- Synonym: pycnid
Latin
Noun
pycn?dium
- genitive plural of pycn?tis
pycnidium From the web:
- what is pycnidium in english
- what is a pycnidia in biology
- what does pycnidium contain
- what is called pycnidium
aecium
English
Alternative forms
- æcium
Etymology
From New Latin, from Ancient Greek ????? (aikía, “injury, insult”).However Merriam-Webster relates that aecium is a back-formation from aecidium and is not related to the Greek aikía. The word aecium was "introduced as a substitute for aecidium by the Purdue University plant pathologist J. C. Arthur (1850-1942) in an effort to reform terminology for rust fungi; see Terminology of the Spore-Structures in the Uredinales, Botanical Gazette, vol. 39 (Mar., 1905), pp. 219-22."
Pronunciation
- IPA(key): /?is.i.?m/
Noun
aecium (plural aecia or aeciums)
- (mycology) A cuplike fruiting structure of some parasitic rust fungi that contains chains of aeciospores.
- 1932 August, Ralph Ulysses Cotter, Factors Affecting the Development of the Aecial Stage of Puccinia Graminis, US Dept of Agriculture, Technical Bulletin No. 314, page 29,
- The writer therefore made observations to determine the conditions under which the aecia open and discharge spores most readily.
- 2010, N. K. Soni, Vandana Soni, Fundamentals of Botany, Volume 1, page 127,
- The receptive hyphae with binucleate cells eventually form the basal cells of the aecium. […] Many cup-like structures, called aecia, appear on the lower surface of leaf.
- 2010, M. S. Patil, Anjali Patil, 16: The Rust Fungi: Systematics, Diseases and Their Management, Arun Arya, Analía Edith Perelló (editors), Management of Fungal Plant Pathogens, page 209,
- It is a heteroecious rust and its aecia are produced on species of Oxalis, namely O. stricta, according to Arthur (1929).
- 1932 August, Ralph Ulysses Cotter, Factors Affecting the Development of the Aecial Stage of Puccinia Graminis, US Dept of Agriculture, Technical Bulletin No. 314, page 29,
Related terms
- aecial
- aecidium
See also
- pycnium
References
- aecium at OneLook Dictionary Search
- aecium in The Century Dictionary, New York, N.Y.: The Century Co., 1911.
aecium From the web:
- what does aecium meaning
- what does aecium
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