Herbs annual or biennial.Root stout, tuberlike, and napiform or fusiform, or branched and not tuberlike.

一二草本根粗壮，管状，和芜菁状孔纺锤形的，分枝而不管状。

Caudex branched, erect, to 2 cm in diam.Caudex leaves scalelike, triangular to subtriangular.

块根分枝，直立，在2厘米直径块根离开鳞片状，到近三角形三角形。

Stem conspicuously striate or tetragonous, robust, succulent, simple or branched in upper part.

茎显著的具条纹的4棱，粗壮，肉质的，单一分枝在上半部分。

Stem succulent, simple or divaricately branched from middle, lower nodes swollen, naked.

茎肉质的，单中的分枝，下部节膨胀，裸露。

Unlike a leaf, a cladode has buds on its surface.

但节与节明显，节上能分枝，叶和开。

Basal leaves decussate; middle stem leaves opposite; distal stem leaves alternate; Inflorescence paniculiform with cymose branches.

基叶交互对；中茎叶对；上部茎叶互；圆锥状的具聚状的分枝。

The characteristic of hyphae are regular width and septation with typical branching in acute angle (about 45 degrees) in PAS stain.

病理切片经由PAS染色清楚可见麴菌菌丝，其具有分隔，且分枝呈锐角状，约45度角，为其特徵。

Tendril unbranched or bifurcate. Inflorescence usually a polychasium. Seeds elliptic, obovoid-elliptic, or obtriangular, surface smooth, corrugated, or with strumose protuberance or ribs.

卷须不分枝二叉。通常的一多歧聚。种子椭圆形，倒卵球形椭圆形，倒三角形的，平滑的表面，具皱褶，具瘤状的突起肋。

Evolution is regarded as a branching process, whereby populations are altered over time and may speciate into separate branches, hybridize together, or terminate by extinction.

进化被视为一个分枝过程；随着时的推移，种群发改变，种群也可能进化成为分枝，也可能相互杂交灭绝终止。

A mutant, TS-N-121 was obtained by mutation and plate screening from a parent strain Mycobacterium fortuitum MF2 , which could transform sterol into androstanedione as the main product.

从雄甾二酮的转化产菌偶发分枝杆菌MF2出发,经紫外诱变结合平板筛选,获得一株主要转化产睾酮的突变株TS-N-121。

Stems caespitose, simple or many branched, 60-150 cm tall, ca. 1 cm in diam., antrorsely setulose, armed with spreading stinging hairs, dense in lower parts, sparser in upper parts.

丛的茎，单多分枝，60-150厘米高，直径约1厘米，向上地具小刚毛的，具平展的蛰毛刺，紧密的在下部，稀的在上半部分。