| Calamagrostis purpurascens subsp. laricina (Louis-Marie) Elven | |
| Publ. & Syn. | Calamagrostis poluninii T.J. Sørensen, Meddel. Grønland 136, 8: 11 (1954). Holotype (C): Greenland: Kiagtut in Tunugdliarfik, 15. July 1947, leg. Th. Sørensen 188. |
| Notes | Elven and Murray: Greene (1980, 1984) included Calamagrostis poluninii in C. purpurascens var. laricina based on his investigation of type material. Sørensen's (1954) description of C. poluninii was made without reference to Louis-Marie's (1946) description of var. laricina. Greene seems to have been the first to compare them. We agree with his synonymization. Yurtsev (in comment) proposed specific rank for C. poluninii based on the description by Böcher et al. (1978) of stolons and the awn not exserted from spikelet. If retained at rank of species, C. poluninii 1954 has priority before C. laricina 1958. We follow Greene's opinion based on comparison of types and also our own consideration that var./subsp. laricina + C. poluninii on one hand and var./subsp. purpurascens on the other are too similar (and possibly with transitions) to be acceptable as two species. Phytogeographically, the southwestern Greenland plant named as C. poluninii is an eastwards extension of the range of the northeastern North American C. purpurascens subsp. laricina. We have only observed aborting anthers (i.e., assumed agamospermy) in this subspecies. |
| Chromosomes | 56 (8x). - Greenland. - Jørgensen et al. (1958, two counts). |
| Geography | North American (NE): CAN GRL. |
| Distribution | N = S GW = r D = ? E = S CC = r HL = ? [ key ] |
| Parent taxon | Calamagrostis purpurascens R. Br. |
| PAF ID | 342003b |