萼片

Annual or biennial herbs; leaflet blades 4-15 mm wide; sepals 5-6 mm; capsule 1.6-2.5 cm, straight or slightly curved but not falcate.

一年生或二年生草本小叶叶片4-15毫米宽；萼片5-6毫米；蒴果1.6-2.5厘米，直或稍弯曲但不是镰刀形。

Leaf blade narrowly lanceolate, falcate, 10–23 × 0.7–1.8(–2.2) cm; sepals ovate, ca.

叶片狭披针形，镰刀形， 10-23 * 0.7-1.8(-2.2)厘米；萼片卵形，约3毫米 25 P。

Dark glands present on at least sepals and/or anthers or leaves; stem internodes 2-lined or terete; stamens usually apparently 3(or 4)-fascicled

在至少萼片和花药或叶上的深色的腺体宿存；茎节间的2线棱或圆柱状；雄蕊通常表面上3(或4)簇生 43

Sepals elliptic to oblong or foliose; leaves lanceolate to ovate-lanceolate,± triangular, with venation (secondary and sometimes tertiary) conspicuous

萼片椭圆形到长圆形或叶状；叶披针形到卵状披针形，多少三角形，具脉序次要和有时第三明显 22

Sepals free, boat-shaped, galeate at apex.

萼片离生，舟状，盔状的在先端。

Female flowers 1-3 at base of inflorescence, sometimes absent; pedicel distinct; sepals [2 or]3, irregularly triangular, fused at base, glandless; petals and disk absent; ovary [2 or]3-locular, smooth, usually glabrous; style present; stigmas [2 or]3, undivided, glandless.

在花序的基部的雌花1-3，有时无；花梗清楚；萼片 [2或者 ]3，不规则三角形，在基部愈合，无腺体；花瓣和花盘无；子房 [2或者 ]3室，平滑，通常无毛；花柱宿存柱头 [2或者 ]3，不裂，。

Leaves often glaucous abaxially; flowers 1.5–2 cm in diam.; sepals 5–7.5 mm, margin entire.

叶通常有白霜背面；直径的花1.5-2厘米；萼片5-7.5毫米，边缘全缘。

The results indicated that compared with short photoperiod, under long photoperiod, plant height, caudex, leaf and leaf number increased, florescence delayed; The phase from the calyx differentiation stage to gynoecia differentiation stage lasted 3~4 days.

采用10h和16h两种光照条件对紫苏进行处理，观测光周期对紫苏生长发育的影响，结果表明：与短日照条件下的相比，长日照条件下生长的供试材料叶片数增加，叶片增大，茎增粗，植株增高，开花延迟；花芽分化从萼片原基形成开始，到雌蕊形成为止，持续3~4d。

Fruit terete, torulose; sepals 3.5-5.5(-7) mm; petals 6-8(-10)× 1-1.5 mm; filaments 3-5(-6) mm; anthers 1-1.5 mm; middle leaves often lobed or hastate basally

果圆柱状，近念珠状；萼片3.5-5.5(-7)毫米；花瓣 6-8(-10)* 1-1.5 毫米；花丝3-5(-6)毫米；花药1-1.5毫米；基部的中部叶通常浅裂的或戟形 9 S。

Fruit subquadrangular, not torulose; sepals 7-9 mm; petals 12-16 × 2.5-3.5 mm; filaments 6-10 mm; anthers 2-3 mm; middle leaves not lobed or hastate basally

果近四棱，不近念珠状；萼片7-9毫米；花瓣 12-16 * 2.5-3.5 毫米；花丝6-10毫米；花药2-3毫米；基部的中部叶不裂或戟形 8 S。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。