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- Calyptra thalictri n. 壶夜蛾
- Petals united at apex and shed as a cap (calyptra) at anthesis. 花瓣在先端合生和棚在花期形成一顶帽子(帽状体)的盖。
- Calyx lobes (3 or)4 or 5 or more, distinct or connate into a calyptra. 萼裂片(3-)4-5或更多，离生或者合生成帽状体。
- The second leaf takes place at the basal part of the first leaf and originates from the shoot apex cells when the first leaf pierces the calyptra. 第一叶突出帽状体之后，由第一叶基部保留下来的茎干顶端细胞产生第二叶。
- Petals 4 or 5, valvate in bud, connate apically and forming a calyptra, falling early. 花瓣4或5，在芽中镊合状，合生顶部和形成帽状体，早下降。
- Corolla lobes 4 or 5, free, rarely connate and forming a calyptra, ovate or spatulate, valvate. 花冠裂片4或5，离生，很少合生和形成的一帽状体，卵形的或匙形，镊合状。
- Petals indefinite in number, thick, leathery, becoming woody when dry, valvate, united into a calyptra, early deciduous. 花瓣数不清楚的，厚，革质，干燥时变得木质，镊合状，合并成一帽状体，早落叶。
- Calyptra 1.The root cap: a conical-shaped structure that is formed by the activity of the meristem at the root apex and forms a protective cap around the root tip. 帽状体：1.;根冠：位于根尖的最前端，像帽子一样套在分生区外面，保护其内幼嫩的分生组织细胞。
- calyptra obtusely pyramidal, 2-2.5 mm, apex obtuse. 钝金字塔的帽状体，2-2.;5毫米，先端钝。
- calyptra long conic, 5-7 mm, apex acuminate. 帽状体长圆锥形，5-7毫米，先端渐尖。
- calyptra semiglobose, ca. 1.5 mm. 帽状体半球形，大约1.;5毫米。
- calyptra 4-4.5 mm, apex rounded. 帽状体4-4.;5毫米，先端圆形。
- calyptra shorter than or as long as hypanthium. 帽状体短于或者等长于托杯。
- calyptra 5-7 mm, slightly longer than hypanthium, apex acute. 帽状体5-7毫米，稍微长于托杯，先端锐尖。
- calyptra awl-shaped, as long as hypanthium, apex slightly acute. 帽状体锥形，等长于托杯，顶稍锐尖。
- calyptra semiglobose or slightly acute, shorter than hypanthium. 帽状体半球形或者稍锐尖，短于托杯。
- calyptra nearly as long as hypanthium, apex slightly acute. 帽状体近等长于托杯，顶稍锐尖。
- calyptra pyramidal awl-shaped, shorter than hypanthium, apex slightly acute. 金字塔锥形的帽状体，短于托杯，顶稍锐尖。
- calyptra semiglobose, shorter than or as long as hypanthium, apex rounded. 帽状体半球形，短于或者等长于托杯，先端圆形。
- calyptra ca. 1.5 mm, slightly wider than hypanthium, apex rounded, apiculate. 帽状体约1.;5毫米，比托杯稍微有点宽，先端圆形，具细尖。
