| A revision of Raddi's pteridological collection from Brazil (1817–1818) | 2005/01/01 | English | 22 |
| The benthic marine algae of Southern Italy. Floristic and geobotanic considerations | 1984/01/01 | French | 22 |
| Taxonomic Revision of Cytisus Desf. Sect. Tubocytisus DC. (Fabaceae) | 1991/01/01 | English | 22 |
| A laboratory guide for generating DNA barcodes in grasses: a case study ofLeptochloas.l. (Poaceae: Chloridoideae) | 2014/01/02 | English | 21 |
| FLORULA MEDICINALE DELLE CINQUE TERRE | 1960/01/01 | Italian | 21 |
| Origin and diversification of «Genisteae» (Fabaceae): a serosystematic purview | 1984/01/01 | French | 21 |
| A checklist of the alien flora of the Tuscan Archipelago (Italy) | 2014/01/02 | English | 21 |
| The genus Phalaris L. (Gramineae) in Italy | 1993/01/01 | Italian | 20 |
| Flora e vegetazione della Macchia lucchese di Viareggio (Toscana) | 1990/01/01 | Italian | 20 |
| Il genere Stipa L. (Gramineae) in Italia | 1986/01/01 | Italian | 20 |
| The Frankincense Tree (Boswellia sacra Flueck., Burseraceae) in Dhofar, southern Oman: field-investigations on the natural populations | 2003/01/01 | English | 20 |
| Chromosome variability in the Genisteae (Adams.) Benth. (Leguminosae) | 1979/01/01 | English | 20 |
| Sulla Briologia Delle Isole Italiane | 1907/01/01 | Italian | 20 |
| A PROVISIONAL CATALOGUE OF THE FAMILY NAMES OF LIVING PTERIDOPHYTES | 1970/01/01 | Italian | 19 |
| STUDI SULLA VEGETAZIONE DI ALTITUDINE DELLE ALPI APUANE | 1966/01/01 | Italian | 19 |
| FRAGMENTA PTERIDOLOGIAE—II | 1970/01/01 | English | 19 |
| Revisione tassonomica delle querce caducifoglie della Sicilia | 1999/01/01 | Italian | 19 |
| RÉVISION DES ESPÈCES DU GENRE « SESLERIA » EN ITALIE | 1959/01/01 | Italian | 18 |
| Flora vascolare dell'isola del Giglio (Arcipelago toscano): revisione tassonomica ed aggiornamento | 1998/01/01 | English | 18 |
| La flora vascolare dell'isola di Montecristo (Arcipelago toscano) | 1976/01/01 | Italian | 18 |
| PRIMA FLORA COLOMBIANA | 1969/01/01 | Italian | 18 |
| The collectors and collections in the Herbarium Webb | 1977/01/01 | English | 18 |
| Recherches géobotaniques sur les Monts Madonie (Sicile du Nord) | 1984/01/01 | French | 18 |
| ADUMBRATIO FLORAE AETHIOPICAE | 1957/01/01 | Italian | 18 |
| The Vegetation of Central Tigre, Ethiopia, in relation to its land use | 1977/01/01 | English | 17 |
| Scirpus L. and related genera (Cyperaceae) in Italy | 2003/01/01 | Italian | 17 |
| Reproduction in Mediterranean plants | 1984/01/01 | French | 17 |
| Systematics of the Complex Pulmonaria saccharata-P.vallarsae and Related Species (Boraginaceae) | 1996/01/01 | Italian | 17 |
| Piante medicinali e fitoterapia nel territorio di Cetona e Sarteano (Siena) | 1977/01/01 | Italian | 17 |
| Analisi fitogeografica del distretto Appenninico Tosco-Emiliano | 1990/01/01 | Italian | 16 |