One-sided type

...The flat-eared type (var. effusum Al.) has long rachis branches that spread widely on both sides of the ear and droop when ripe. The single-eared type (var. contractum Al.) has slightly shorter rachis branches that droop on only one side of the ear. The dense-eared type (var. compactum Kcke.) has short rachis branches that remain upright even when ripe. ...

*Some of the terminology explanations that refer to the "single-ear type" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…平穂型(var.effusum Al.)は枝梗が長く，穂軸の両側に広く散開し，稔実すると垂れる。片穂型(var.contractum Al.)は枝梗がやや短く，穂軸の片方にのみ寄って垂れる。密穂型(var.compactum Kcke.)は枝梗が短く，実っても直立のままである。…

※「片穂型」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報