| Kanji in this term | |
|---|---|
| 円 | 椎 |
| つぶ(ら) Grade: 1 |
しい > じい Grade: S |
| kun'yomi | |
| Alternative spelling |
|---|
| 圓椎 (kyūjitai) |
円椎 or 円椎 • (tsuburajī)
As with many terms that name organisms, this term is often spelled in katakana, especially in biological contexts (where katakana is customary).