| Extra-short | |
|---|---|
| ◌̆ | |
| IPA Number | 505 |
| Encoding | |
| Entity (decimal) | ̆ |
| Unicode (hex) | U+0306 |
The International Phonetic Alphabet (IPA) uses a breve ⟨ ˘ ⟩ to indicate a speech sound (usually a vowel) with extra-short duration. That is, [ă] is a very short vowel with the quality of [a]. An example from English is the short schwa of the word police [pə̆ˈliˑs].[1] This is typical of vowel reduction.
Before the 1989 Kiel Convention, the breve was used for a non-syllabic vowel (that is, part of a diphthong), which is now indicated by an inverted breve placed under the vowel letter, as in eye [aɪ̯]. It is also sometimes used for any flap consonants missing dedicated symbols in the IPA, since a flap is in effect a very brief stop.
Well, that’s interesting to know that Psilotum nudum are known as whisk ferns. Psilotum nudum is the commoner species of the two. While the P. flaccidum is a rare species and is found in the tropical islands. Both the species are usually epiphytic in habit and grow upon tree ferns. These species may also be terrestrial and grow in humus or in the crevices of the rocks.
View the detailed Guide of Psilotum nudum: Detailed Study Of Psilotum Nudum (Whisk Fern), Classification, Anatomy, Reproduction