The genus Luticola D.G.Mann (Bacillariophyta) from the McMurdo Sound Region, Antarctica, with the description of four new species

Hieracium barrelieri, a new hawkweed species from S Italy, with notes on Tenore’s Hieracium murorum var. barrelieri (Asteraceae)

Clitocybula sulcata—a new species from India

A comparative study of Pleurosigma subrectum and P. acus (Bacillariophyta)

Two new species of Aspidistra (Asparagaceae, Nolinoideae) from northern Vietnam: A. clausa and A. triradiata

Helianthemum (sect. Helianthemum) raskebdanae (Cistaceae), a new species from northeastern Morocco

Taxonomic adjustments in Discocactus Pfeiff. (Cactaceae) 

Gaya xiquexiquensis (Malvaceae, Malvoideae), a new species from Bahia state, Brazil

A new species of Tovomita Aubl. (Clusiaceae) from the Brazilian Atlantic Forest

Studies on Lophocoleaceae. XXIV. Chiloscyphus alpicola J.J.Engel, an interesting new liverwort species from New Zealand together with nomenclatural changes in Tetracymbaliella Grolle