Carex × grahamii Boott (1844: 180

Elven, Reidar, Pedersen, A. Tiril M. & Bjorå, Charlotte S., 2017, The nomenclature of two hybrid taxa in Carex sect. Vesicariae (Cyperaceae) currently assigned as Carex rostrata var. borealis and Carex stenolepis, Phytotaxa 324 (1), pp. 63-72 : 65

Carex × grahamii Boott (1844: 180 , 215–216).

This species was described from Glen Phee (by some collectors misnamed as Glen Dole), Clova, Scotland, based on collections made in July and August 1832 and also in 1840. The protologue describing it is extensive and the set of syntypes uniform. There is no doubt that this plant is of hybrid origin from C. saxatilis and C. vesicaria and that it conforms to what has been denoted as “ C. stenolepis ” in Fennoscandia in the last decades. Carex × grahamii is the earliest validly published species name based on material of the hybrid between C. saxatilis and C. vesicaria . The original material was distributed in several herbaria. As Boott (1844) did not specify a collection date (he was merely informed by “Dr. Graham that this plant was [first] found by Dr. Wight. July 30, 1832 ”) and also accepted specimens from Glen Dole (as “the station … affixed to some species, being incorrect”, see Boott, 1844: 215–216), we accept as syntypes specimens from E (E No. 00044786!, 00044787!, 00044788!, 00044792!, 00044798!, 00279305!, 00279306!), BM (BM No. 000597601!), and K (K No. 000960506!, 000960507!). Specimen K No. 00960506 includes three culms with spikes and was labeled as “Typus” for C. grahamii Boott by T.V. Egorova in 1973 ( Fig. 3 ). We accept her choice and designate one of the culms as lectotype.

Figures

FIGURE 3. Lectotype of Carex grahamii Boott, designated here, from Great Britain: Scotland, Clova. From the Royal Botanic Gardens, Kew (K). The priority name for the hybrid species from C. saxatilis × vesicaria, © of the Board of Trustees of the Royal Botanic Gardens, Kew.