Data on six species of vascular plants rare in the Arkhangelsk Region are given. Two species - Alchemilla breviloba and Scirpus radicans - are reported for the area for the first time. A regionally protected species Pseudorchis albida was found at a large distance from the core of its range. Two new sites expand the knowledge about the distribution of a very rare species Poa pinegensis, a peculiar bluegrass with leaves pubescent on the upper surface with 0.7 mm long hairs. Data on the locations and habitats of Alchemilla cymato-phylla and Elatine orthosperma, known in the region from 2 and 1 places, respectively, are being verified.