Hygrolejeunea fissistipula Steph. ex Bonner, Index Hepat 6: 650. 1966 [nom. nud.].

Original material: ECUADOR. Prov. Morona Santiago: Bomboiza, “in silva Sacramento frequens”, 900 m, 14.II.1910, Allioni 254 (G [G00280827]!).

= Otigoniolejeunea huctumalcensis (Lindenb. & Gottsche) Y.M. Wei et al.

Notes. – Otigoniolejeunea huctumalcensis is an uncommon neotropical species that was long considered a member of Ceratolejeunea Jack & Steph. (as C. dussiana Steph. = C. dentatocornuta Steph.; DAUPHIN, 2003) until WEI et al. (2014) showed its position in Otigoniolejeunea (Spruce) Schiffn. based on molecular evidence. Characteristic are the delicate plants with ocellate leaves, small bottle-shaped lobules, distant bifid underleaves and perianths with antler-like laciniae. Hygrolejeunea fissistipula is identical to O. huctumalcensis .

Notes on taxa collected by Allioni

Many of the species described as new by Stephani based on Allioni’s collections are common and widespread, e.g., Bazzania hookeri (Lindenb.) Trevis., B. stolonifera (Sw.) Trevis., Frullania ericoides (Nees) Nees, F. kunzei (Lehm. & Lindenb.) Lehm. & Lindenb., Isotachis multiceps (Lindenb. & Gottsche) Gottsche, I. serrulata (Sw.) Gottsche, Leiomitra tomentosa (Sw.) Lindb., Lejeunea flava (Sw.) Nees, Lepidozia cupressina (Sw.) Lindenb., Metzgeria leptoneura Spruce, Odontolejeunea lunulata (F. Weber) Schiffn., Phaeoceros carolinianus (Michx.) Prosk., Plagiochila adianthoides (Sw.) Lindenb., P. aerea Taylor, P. raddiana Lindenb., Scapania portoricensis Hampe & Gottsche and Syzygiella rubricaulis (Nees) Steph. A few new species, however, are uncommon taxa that are known from only few collections and have restricted distributions. They include the following taxa: