Michelle J. Price

Catalogue of the Bryophyte Types in G: The Grimmiaceae

Abstract Price, M. J. & E. Maier (2011). Catalogue of the bryophyte types in G: the Grimmiaceae. Candollea 66: 285–309. In English, English and French abstracts. In the bryophyte collection in G a total of 138 types have been located for 97 specific and infraspecific names either described under Coscinodon Spreng., Grimmia Hedw., Racomitrium Brid., Schistidium Brid., or later transferred into one of these genera. These represent 63 currently recognised taxa, 58 from the Grimmiaceae, two that are now in the Pottiaceae and three that are in the Orthotrichaceae, Ptychomitriaceae and Seligeriaceae. Of the 138 types identified 33 are holotypes or lectotypes, 75 are isotypes or isolectotypes, 19 are syntypes or paratypes, 1 is a neotype and 10 are of uncertain designation. Four original specimens for three nomina nuda were also located. A previously un-documented original Hedwig specimen for Trichostomum heterostichum Hedw. was found recently and details on it are given herein. Newly identified potential type specimens from the Nees von Esenbeck herbarium, for 11 names described in Bryologia Germanica, are included. A list of problematic material and types that are cited in the literature as present in G but that were not located in the herbarium has been compiled. This catalogue includes the basionym and current name, protologue type citation, specimen label information, G barcode and typification information for each of the 154 specimens treated.

In the Footsteps of Lantzius-Beninga: Investigating the Peristome Characters of Mosses

Abstract Lantzius-Beninga (1815–1871), influenced by the earlier work of Hedwig (1730– 1799), investigated the capsules of mosses, and more specifically characteristics of the peristome. He was the first to show that longitudinal sections of the capsule and peristome teeth at the capsule mouth provided characters useful to distinguish species. Limpricht (1888–1903) integrated the findings of Lantzius-Beninga into his species descriptions in Kryptogamen-Flora von Deutschland, Österreich und der Schweiz. The ideas of Lantzius-Beninga were later taken up by S. Edwards; J. Shaw and H. Robinson; and J. Shaw, L. Anderson and B. Mishler for taxonomic research, although the technique of sectioning the capsule and peristome has not been widely adopted by bryologists. Drawings of longitudinal sections through peristome teeth of selected species of Grimmia are presented here to illustrate specific differences between them using the technique of Lantzius-Beninga. We show that it is possible to correlate some variable characters of the gametophyte with the characters of the sporophyte, specifically longitudinal sections of the peristome and capsule at the capsule mouth, and to clearly separate taxa on the basis of peristome differences. A paragraph concerning sectioning methods is included.

New typifications and a new synonym in Holomitrium (Dicranaceae) from Paraguay

Abstract A recent checklist of mosses in Paraguay included three species of Holomitrium Brid.: H. arboreum Mitt., the newly reported H. olfersianum Hornsch. and the endemic H. paraguense Besch. A review of Holomitrium from the Neotropics revealed that H. paraguense was a new synonym of H. olfersianum. Lectotypes are newly proposed herein for H. olfersianum and H. paraguense based on material from the Hampe and Bescherelle herbaria in the BM. Two species of Holomitrium (H. arboreum and H. olfersianum) are now known to occur in Paraguay in the states of Alto Paraná, Canendiyú and Paraguarí.

Lectotypification of the moss name Grimmia cribrosa Hedw. [≡ Coscinodon cribrosus (Hedw.) Spruce] (Grimmiaceae)

Abstract Work on a catalogue of the Grimmiaceae in g revealed that the typification of Grimmia cribrosa Hedw. [≡ Coscinodon cribrosus (Hedw.) Spruce] was problematic. The specimen in g that was previously treated as the holotype for this name does not constitute original Hedwig material and could not have been seen by him when originally describing this species as it was collected after he died. The original Hedwig herbarium sheet for Grimmia cribrosa, in the Hedwig-Schwägrichen collection in g, contains eight different elements of different temporal and geographic origins as well as specimens of two different taxa (C. cribrosus and Grimmia plagiopodia Hedw.). To ensure the correct interpretation and application of this name a lectotype has been proposed herein from amongst the elements on the original Hedwig herbarium sheet in g.

Hedwig-Schwägrichen types catalogue update (1) : new typifications and typification corrections

Abstract Price, M. J. (2014). Hedwig-Schwägrichen types catalogue update (1): new typifications and typification corrections. Candollea 69: 119–133. In English, English and French abstracts. An update of the “Catalogue of the Hedwig-Schwägrichen Herbarium (Part 1)” of 2005 has been compiled herein. It collates the 38 recently published typifications for the Hedwig moss names and includes updated information on 12 typifications that were unintentionally omitted or incorrectly cited in the original catalogue. Information on the place and page of publication of each typification as well as the details of the types themselves is given for each name concerned. Given the complexities of the typification process of the Hedwig material (for example, the historical nature of the material, presence of different entities with different temporal or geographic origins on the type sheet, two or more species attached to the same sheet, the presence of Schwägrichens annotations, labels that do not correspond exactly with the protologue or validating description) the correct citation of the G-Hedwig herbarium sheet and of the elements on it being typified are of crucial importance. To facilitate the unequivocal identification of the Hedwig specimens in G a list of the barcodes assigned to each of the Hedwig herbarium sheets figured in the original catalogue is provided.

A lectotype for Dicranum howellii (Dicranaceae)

Abstract The North American endemic moss Dicranum howellii Renauld & Cardot, described in 1888 based on material from Oregon, U.S.A., had yet to be validly typified. A lectotype for D. howellii is designated herein based on one of two potential type specimens in the Renauld collection in PC. Dicranum howellii is currently known from western North America in Canada (British Colombia) and the U.S.A (Alaska, California, Idaho, Montana, Oregon and Washington). Traditionally it has been considered as close to, or a synonym of, Dicranum scoparium Hedw. and specimens of it are frequently confused with the latter species. Dicranum howellii can be distinguished from D. scoparium based on its suddenly narrowed inner perichaetial leaves that end in a long, flexuose point; leaves that are concave below and tubulose above; slightly decurrent leaf bases; in transverse section, leaf cell-walls that are of variable thickness; and the presence of a sulcus on the dorsal side of the costa.

A revision of Grimmia (Grimmiaceae) from South Africa and Lesotho

Abstract Maier †, E., M.J. PRICE & T.A. HEDDERSON (2017). A revision of Grimmia (Grimmiaceae) from South Africa and Lesotho. Candollea 72 : 199–230. In English, English abstract. DOI : http://dx.doi.org/10.15553/c2017v721a12 A revision of Grimmia Hedw. (Grimmiaceae) from South Africa and Lesotho based on specimens housed in BM, BOL, G, PRE, and STU, as well as type material from B, BM, BOL, FH, G, H-BR, H-SOL, NY, and PRE, is presented. Thirteen species are recognized for South Africa and Lesotho : Grimmia consobrina Müll. Hal., Grimmia donniana Sm., Grimmia elongata Kaulf., Grimmia fuscolutea Hook., Grimmia kidderi James, Grimmia laevigata (Brid.) Brid., Grimmia longirostris Hook., Grimmia montana Bruch & Schimp., Grimmia orbicularis Wilson, Grimmia pulvinata (Hedw.) Sm., Grimmia pygmaea Müll. Hal., Grimmia sessitana De Not. and Grimmia tortuosa Hook. f. & Wilson. Keys based on morphological features, with an emphasis on costal characters, are provided. Each species is described and illustrated using key morphological and anatomical characters, such as transverse sections of leaves. Methods of specimen preparation are also explained and a glossary is supplied. Information on the geographical as well as altitudinal distribution of each species is given, with species distribution maps provided for the area covered by this study. Received: September 26, 2016; Accepted: March 25, 2017; First published online: May 12, 2017