茎直黄芪 Astragalus strictus ; Astragalus strictus Grah ex Benth
茎直径变化 stem diameter variations
直立茎 [植] erect stem ; upright stalk
直茎红景天 Rhodiola recticaulis A. Bor
半直立茎 semi-erect stem
直茎蒿 Artemisia edgeworthii ; edgeworthii
短直立茎 short erect
直茎点地梅 Androsace erecta
直茎鼠曲草 Gnaphalium calviceps
直茎鼠麴草 Gnaphalium calviceps
茎直而粗壮，有白色粗硬毛。
他们把高大的多多啦芦苇的茎秆绑成捆，制成庞大的漂浮物。旧的芦苇不断腐烂，新的芦苇又编进去，所以岛的形状一直在变化。
They bundle totora reeds-the stalks of the giant bulrush-into floating, shape-shifting masses that change as reeds rot and new ones are lashed on.
这种巨花的花瓣组成的碗型花冠直茎达50英尺。
This 50 ft. enormous flower has a bowl formed out of its petals.
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