rachis

1 It is sometimes referred to as the rachis.

2 A low - growing , weedy grass ( Paspalum distichum ) with spikelets arranged in two rows along the rachis.

两耳草一种小穗沿叶轴排成两行的低矮蔓生草 ( 两耳草雀稗属 )

3 Pinnate, having its parts arranged in pairs along a common rachis.

4 In stage three, the barbs partially unite to form a central rachis, and even smaller filaments called barbules start to branch off from the barbs.

5 The origin of the generic name arachis is somewhat obscure; it is said to come from a, privative, and rachis, a branch, meaning having no branches, which is not true of this plant.

6 This is the rachis—and down here below this, is the rhizoma; and the little seed places that come on the back of the frond, are thecae.

7 With mature plants, the flower-stems and the leaves of some few species, and the rachis of several ferns, as they emerge separately from the ground, are likewise arched.

8 The rachis of the spike is very slender, angular, flexuous, narrower than the spikelets, scaberulous with a few long cilia at the angles.

9 The activity of catalase in rachis branches of ratooning rice of HMST and LST varieties improved with declining stubble height, whereas a contrary trend was observed for HST ones.

中高桩与低桩再生型品种再生稻枝梗过氧化氢酶活性随留桩高度下降而增强，而高桩再生型品种表现相反；

10 The primary feathers on older woodcock are also less symmetrical than those on younger birds, with one wider edge on the outside of the rachis, or centerline.

11 Sori numerous, rather near the midvein, stipe and rachis lustrous brown.

12 The panicle is narrow, 3 to 6 inches long, peduncle smooth below but thinly pubescent above, lower branches long, few in a whorl; rachis is very slender, angular, glabrous or hairy.

13 There are also barbules that branch off directly from the rachis, in between points where the barbs branch off.

14 The peculiar ramenta are to be looked for along the insertion of each pinna, and along the rachis, in which all have the peculiar structure.

15 Spikelets are 2-flowered, narrow, biseriate, unilateral, imbricate on the rachis of a solitary spike; the rachilla is elongate between the flowering glumes and produced beyond them and terminates in a rudimentary awned glume.

16 Inspiratory, put both hands on hip, hold out a bosom, stretchy rachis.

吸气，将双手放在臀部上，挺胸，伸长脊柱。

17 Like those of modern birds, these feathers had two asymmetrical vanes coming off a central shaft or ‘rachis’.

18 The inflorescence consists of two to eight smooth, digitate, green or purplish spikes, 1 to 3 inches long; rachis is slender, compressed or angular, scaberulous.

19 The finding suggests that the barbs and barbules evolved before the rachis in feathers.

20 That is interesting because the rachis seems to aid in flight.

1 主轴

caudex principal axis spindle mandrel

2 脊椎

vertebral spondyle vertebra spondyl backbone

3 中脉

costa midrib

4 羽轴

shaft scape stem

5 脊柱

back spine backbone chine spinal column spinal vertebra vertebral

6 脊索

notochord