Origanum munzurense Kit Tan & Sorger (Sect. Brevifilamentum Ietsw.) was described by Kit Tan & Sorger in 1984, and it is an accepted species related to O. acutidens (Hand.-Mazz.) Ietsw. belonging to sect. Brevifilamentum. It is morphologically intermediate between O. acutidens and O. vulgare L. subsp. gracile (K.Koch) Ietsw., and its type locality lies in the overlap zone between the geographic distributions of these two taxa. We hypothesized that O. munzurense is in fact a hybrid between the two aforementioned taxa and we tested this hypothesis with the general morphology, chromosome features, and nuclear (ITS1–ITS2) and chloroplast (rpl32) DNA sequences of specimens of O. munzurense and its putative parental species, O. vulgare subsp. gracile and O. acutidens. The somatic chromosome number of O. munzurense, O. vulgare subsp. gracile and O. acutidens were counted as 2n = 30. Origanum munzurense presented polymorphic sites in the nuclear ITS region, but the chloroplast markers did not allow us to identify the putative maternal of O. munzurense. Our results suggest that O. munzurense is indeed a hybrid, and its rearrangement as a new homoploid hybrid (O. ×munzurense) would be more accurate. These present results support previous reports for the speciation of Origanum members via hybridization.

Kit Tan＆Sorger在1984年描述了Origanum munzurense的Kit Tan＆Sorger（Brevifilamentum Ietsw菌种），它是与O. acutidens（Hand.-Mazz。）Ietsw有关的公认物种。属于宗派。短丝。它在形态学上介于拟青假单胞菌和寻常小曲霉亚种之间。gracile（K.Koch）Ietsw。，其类型局部性位于这两个类群的地理分布之间的重叠区域。我们假设O. munzurense实际上是上述两个类群的杂种，我们用一般的形态，染色体特征以及核（ITS1-ITS2）和叶绿体（rpl 32）芒草及其推测的亲本物种（O. vulgare subsp。）标本的DNA序列。gracile和O. acutidens。O. munzurense，O。vulgare亚种的体细胞染色体数。黄and和拟臭拟杆菌（O. acutidens）的计数为2n = 30。牛至（Origanum munzurense）在ITS核区出现了多态性位点，但是叶绿体标记不允许我们鉴定推测的产于O. munzurense的母体。我们的研究结果表明，芒草（O. munzurense）确实是杂种，并且作为新的同倍体杂种（O. ×munzurense）会更准确。这些目前的结果支持以前关于通过杂交对牛至属物种形成的报道。