Grimmia kidderi James

• Main Authors: Eva Maier, Michelle J. Price, Terry A. Hedderson
• Format: Other/Unknown Material
• Language: unknown
• Published: 2017
• Subjects: Biodiversity; Taxonomy; Plantae; Bryophyta; Bryopsida; Grimmiales; Grimmiaceae; Grimmia; Grimmia kidderi; Antarctic; Kerguelen; Kerguelen Island; Muñoz; Antarc*
• Online Access: https://zenodo.org/record/5722014; https://doi.org/10.5281/zenodo.5722014

5. Grimmia kidderi James in Bull. Torrey Bot. Club 6: 54. 1875 (Fig. 7). Lectotypus (designated by Muñoz, 1999: 143): frAnCe . French Southern and Antarctic Territories: Kerguelen Island, 1874, Kidder s.n. (FH!; isolecto-: FH!). Gametophyte. Dioicous. Female: innermost perichaetial leaf up to 4 mm long, slightly sheathing up to shoulder at midleaf, costa stout, excurrent to scarcely denticulate hair-point; male: perigonia not seen. Growth form: cushion dense, adherent to substrate with grayish, in wet state hyaline, rhizoids, interwoven with young shoots, originating from older stem parts, leaflets scale-like, concave, muticous or with a hyaline end cell, in dry state firmly appressed to stem, apices spreading, producing bristly aspect, plants erect, sparsely branched, stems up to 10 mm high, central strand small. Leaves from lower part of stem 0.3-0.5 mm long, concave, muticous, becoming progressively longer, up to 1.7 mm long, loosely arranged to stem, erect when dry, moving weakly when moistened, erect or erecto-patent when wet, from ovate leaf base narrowly lanceolate, tapering to obtuse apex, muticous or with hairpoint of different length, bluntly denticulate; leaf form in situ, from insertion up to apical part concave or above broadest part of leaf widely keeled, in apical part keeled, margins plane throughout; basal paracostal cells elongate-rectangular, thickwalled, more or less nodulose, towards margin rectangular, becoming short-rectangular to quadrate in transitional part, walls smooth, thickened, especially the transverse walls, cells in laminal part isodiametric, lumina rounded; seen in transverse section, leaf base unistratose, in lower laminal part uni- to bistratose, apical part bistratose, occasionally with tristratose marginal cell rows. Costa, seen on dorsal side, of even width throughout, not reaching apex, seen in transverse section, costa rounded, on ventral side widely channelled, in upper part of leaf channelled or narrowly channelled, at insertion and leaf base 4 guide cells, in laminal ...