查询词典 palea

Stigmas 2 or 3. Caryopsis fusiform, tightly enclosed by lemma and palea; hilum linear; embryo short.

柱头2或3。纺锤形的Caryopsis，藏于外稃和内稃的紧紧；种脐线；胚短。

Spikelets alike (except Cortaderia , Elytrophorus ), laterally compressed, fertile florets several, uppermost florets reduced, disarticulating between florets; floret callus usually bearded, short and obtuse or elongate; glumes persistent, variable in length, shorter than lemmas to as long as spikelet, usually membranous, 1–9-veined, apex acute to acuminate; lemmas rounded on back, hyaline to leathery, glabrous, pilose or villous, hairs sometimes in tufts,(1–)3–11-veined, apex entire or 2-lobed, awnless or a straight or geniculate awn with flat twisted column arising from apex or sinus, lobes often extended into bristles; palea well developed.

除Cortaderia，Elytrophorus之外一样的小穗，侧面压扁，能育小花数个，在小花之间退化，脱节的最上部的小花；通常公然反对，缺乏的小花结茧和抑制或者拉长；颖片宿存，在背面上圆形的外稃，透明的到革质，无毛，具柔毛或者具长柔毛，有时的毛成丛，(1-)3-11脉，内稃发育良好。

Spikelets oblong to gaping, shining, laterally compressed, florets 2–3(–5), disarticulating below each floret; rachilla pilose, extended beyond uppermost floret; glumes lanceolate to oblong, subequal,± equaling spikelet, membranous, shining, keeled, lower glume 1-veined, upper glume 1–3-veined; floret callus small, pubescent to conspicuously bearded; lemmas lanceolate to oblong, hyaline to shiny cartilaginous, back rounded, finely 4-veined (5th midvein extended into awn), glabrous, awned from near base or in lower half, apex membranous, broad, 4-toothed or denticulately truncate; awn straight or weakly geniculate, usually not exserted from spikelet; palea hyaline, subequal to lemma.

小穗长圆形为了张口，发亮，侧面压扁，小花2-3(-5)，在每小花下面脱节；小穗轴具柔毛，在最重要的小花以外延长；披针形的颖片到长圆形，近等长，多少等长，膜质，发亮，龙骨状，下部颖片1脉，上面颖片1-3－脉；小花结茧小，青春期对显著公然反对；外稃披针形的到长圆形，对发亮软骨透明，背面圆形，好4脉(中脉第5 延伸进芒)，从小穗直或者身体虚弱膝曲，通常不外露的芒；透明的内稃，近等长于外稃。

The reflexed upper palea tip, although a very tiny character, is nevertheless important for distinguishing Echinochloa from neighboring genera, especially Brachiaria .

反折上面内稃端部，虽然一极小特征，适合分辨Echinochloa和相邻的属，特别是Brachiaria 虽然如此重要。

Mm, widened at apex. Spikelets 4–8 × 1–1.5 mm, yellowish brown or purplish brown; lower glume absent; upper glume lanceolate-oblong to narrowly oblong with slightly falcate apex, obscurely 7–11-veined, midvein usually shortly excurrent; lemma lanceolate-oblong, 3–4 mm, 1-veined; palea absent.

小穗 4-8 * 1-1.5 毫米，黄棕色或带紫色棕色；更低的颖片无；上面颖片披针形长圆形到狭长圆形具稍镰刀形先端，不明显脉，中脉短通常；外稃披针形长圆形，3-4毫米，1脉；内稃缺席。

Spikelets with 1 floret, small, often gaping, without rachilla extension; rachilla disarticulating above glumes; glumes persistent, longer than floret, subequal or lower a little longer, membranous, 1-veined, apex subacute to acuminate; floret callus glabrous or shortly pilose; lemma oblong to elliptic, thinner than glumes, often hyaline, 5-veined, rounded on back, glabrous or hairy, lateral veins sometimes excurrent, awnless or awned from back, apex truncate or toothed; awn usually geniculate, sometimes weakly so or straight when short; palea shorter than lemma, sometimes very small.

小穗具1小花，小，张口的通常，没有小穗轴扩展；高于颖片脱节的小穗轴；宿存的颖片，长于小花，下部的近等长的或稍长些，膜质，1脉，先端近尖的到渐尖；无毛的小花结茧或者具短柔毛；外稃长方形到椭圆形，比颖片瘦，经常透明，5脉，通常膝曲，有时身体虚弱的芒或者直接，缺乏；内稃短于外稃，有时很小。

Both Nitzschia palea and Chaetocero muelleri were capable of using HCO〓, under the doubled CO〓, the affinity of they to HCO〓 and CO〓 decreased.

两种藻光合作用时均能利用HCO〓，对HCO〓和CO〓的亲和力，在CO〓浓度倍增条件下，明显降低。

High CO〓-grown Nitzschia palea cells showed lower levels of dark respiration and higher I〓 values, while the Chaetoceros muelleri cells showed the contrary results.

高CO〓培养后谷皮菱形藻的暗呼吸速率有所降低，饱和光强高于对照组，而牟氏角毛藻则相反。

Elevated CO〓 to 700μL L〓 enhanced the growth of Nitzschia palea by 4-20％at the beginning of exponential phase, and that of Chaetoceros muelleri by 11-31％in the late exponential phase.

谷皮菱形藻和牟氏角毛藻，在CO〓浓度倍增（700μL L〓 CO〓）条件下，前者的生长从对数期开始受到促进，而后者的促进出现在对数末期；CO〓浓度倍增使稳定期的最大生物量，谷皮菱形藻增加4-20％，牟氏角毛藻增加11-31％。

Sessile spikelet longer than rachis internode; lower glume elliptic-ovate to oblong, papery to leathery, 5–9-veined, marginally 2-keeled, keels pectinately spiny, often winged at apex; upper glume 3-veined, keeled along midvein, otherwise almost flat, often narrowly winged on lower keel; lower floret staminate, palea present; upper floret bisexual, upper lemma entire, awnless.

无梗小穗长于轴节间；下部颖片椭圆状卵形到长圆形，纸质到革质，5-9脉，具刺的2龙骨状，龙骨状的pectinately，通常具翅的在先端的稍微； 3脉的上面颖片，龙骨状沿中脉，几乎平的否则，龙骨状的通常狭翅在下部；雄蕊花的下部的小花，内稃宿存；全缘的上面小花两性，上面外稃，。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

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