@article{fdi:010075123, title = {{N}otes on calycophyllous {R}ubiaceae. {P}art {V}. {A} succinct overview of genera with calycophylls, and a revision of {P}teridocalyx ({S}ipaneeae) with observations on distyly and calycophyll variation}, author = {{D}elprete, {P}iero}, editor = {}, language = {{ENG}}, abstract = {{T}he first part of this paper includes a short discussion on calycophylls in {R}ubiaceae, followed by a succinct overview of calycophyllous genera and their systematic position within the family (subfamilies and tribes). {T}he second part is focused on {P}teridocalyx, the sole genus of the tribe {S}ipaneeae with calycophylls, until recently - only known by three historic collections (including two type gatherings) from {G}uyana. {R}ecent field observations and collection of numerous herbarium specimens permitted a detailed study of this genus, which is here reported for the first time to have distylous flowers. {T}wo species were described in the genus. {A}s a result of a detailed morphological analysis, {P}teridocalyx is here treated as monospecific, and is here illustrated for the first time.}, keywords = {calycophylls ; pterophylls ; semaphylls ; {A}lberteae ; {C}ondamineeae ; {C}oussareeae ; {D}unnieae ; {H}amelieae ; {I}sertieae ; {J}ackieae ; {K}noxieae ; {M}ussaendeae ; {O}phiorrizeae ; {R}ondeletieae ; {U}rophylleae ; {G}uyana ; {G}uiana {S}hield ; {GUYANA}}, booktitle = {}, journal = {{P}hytotaxa}, volume = {391}, numero = {1}, pages = {81--92}, ISSN = {1179-3155}, year = {2019}, DOI = {10.11646/phytotaxa.391.1.6}, URL = {https://www.documentation.ird.fr/hor/fdi:010075123}, }