Hygrolejeunea fissistipula Steph. ex Bonner, Index Hepat

Gradstein, S. Robbert & Pérez, Álvaro J., 2021, In the footsteps of Michel Allioni: Liverworts and hornworts from the surroundings of Gualaquiza (Ecuador), Candollea 76 (1), pp. 41-54 : 47

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: