《中国植物志》|| 十字花科 CRUCIFERAE ||香花芥族 Trib. Hesperideae Prantl ||异药芥属 Atelanthera Hook. f. et Thoms.

71. 异药芥属——Atelanthera Hook. f. et Thoms.
Hook. f. et Thoms. in Journ. Linn Soc. Bot. 5: 138. 1861; Hook. f. et T. Anolers. in Hook. f. Fl. Brit. Ind. 1: 133. 1872; O. E. Schulz in Engl. et Prantl, Nat. Fflanzenfam. 2. Aufl. 17b: 522. 1936.
一年生矮小草本。茎单二，直立，丝状但坚硬，具贴生2节粗毛。叶数片，远离；无基生 叶；茎生叶近对生至互生，无柄，叶片长圆状椭圆形，顶端圆形，全缘。总状花序疏松，有少数花；花小，白色（有时成紫色）；萼片直立，基部不成囊状；花瓣长圆形，长约为萼片的2倍；雄蕊2型：2短雄蕊具2室花药，4长雄蕊具1室花药；侧蜜腺成对，长圆柱状，无中蜜腺；子房有14-24胚珠。长角果线形，近扁平圆柱状，2室，开裂，裂时常捩转；果瓣具贴生毛，有1脉，柱头稍2裂，花柱近无或无。种子每室1行，小，长圆形，无翅；子叶宿存，对生，背倚胚根。
仅1种，产喜马拉雅地区、帕米尔高原、巴基斯坦及阿富汗；我国西藏也有。
本属模式种：异药芥：Atelanthera perpusilla Hook. f. et Thoms.

《Flora of China》|| Brassicaceae || ||异药芥属 Atelanthera

78. Atelanthera J. D. Hooker & Thomson, J. Proc. Linn. Soc., Bot. 5: 129. 1861.

异药芥属 yi yao jie shu

Herbs annual. Trichomes malpighiaceous. Stems erect or ascending, simple basally, branched above. Basal leaves not formed; cotyledons persistent, simple, entire. Cauline leaves sessile, cuneate or attenuate, not auriculate, linear, entire. Racemes few flowered, ebracteate or rarely lowermost flowers bracteate; rachis slightly flexuous. Fruiting pedicels slender, ascending or divaricate. Sepals oblong, caducous, erect, sparsely pubescent with malpighiaceous trichomes, base of lateral pair not saccate. Petals white becoming purplish, longer than sepals; blade narrowly spatulate, apex retuse; claws well developed. Stamens 6, erect, strongly tetradynamous; filaments filiform, not dilated at base; anthers narrowly oblong, apiculate at apex, median pairs 1-lobed, lateral pair 2-lobed, sagittate. Median glands absent; lateral glands 1 on each side of lateral stamen. Ovules 10-25 per ovary. Fruit dehiscent siliques, linear, terete or slightly flattened and latiseptate; valves papery, with an obscure midvein, pubescent with malpighiaceous trichomes, smooth; gynophore absent; replum rounded; septum complete, membranous; style to 1 mm; stigma capitate, subentire. Seeds uniseriate, wingless, oblong, plump; seed coat minutely reticulate, not mucilaginous when wetted; cotyledons accumbent, long persistent.

One species: Afghanistan, China, Kashmir, Pakistan, Tajikistan.

Atelanthera is the only genus in the Brassicaceae in which the median stamens have 1-lobed anthers.