Genero Galianthe Subg. Ebelia (Rubiaceae: Spermacoceae): Estudio Palinologico

Pollen morphology of Rubiaceae Juss. species occurring in an area of caatinga (dryland) vegetation in Bahia State, Brazil

“…Th e results encountered in the present work demonstrated variations in almost all of the morpho-palynological characters investigated, especially in the number and type of aperture and exine ornamentation -characters usually utilized in taxonomic delimitations (Miranda et al 1993, Pire 1996, 1997Dessein et al 2005). Considering the variability observed here, the present study is in consonance with the authors who consider this group eurypollinic (Erdtman 1952;Salgado-Labouriau 1973;Jung-Mendaçolli & Melhem 1995;Dessein et al 2005).…”

“…Th e following works stand out among the published palynological studies of the family Rubiaceae: Erdtman (1952) palynologically described 230 species belonging to 120 genera; Kirkbride (1979) revised the genus Psyllocarpus in Brazil using palynological features; Puff & Robbrecth (1988) investigated the taxonomic position of the Australian genus Durringtonia; Roubik & Moreno (1991) palynologically documented the species of Rubiaceae occurring on Barro Colorado Island in Panama; Jung-Mendaçolli & Melhem (1995) analyzed 25 heterostylous species of Rubiaceae and demonstrated diff erences in pollen size and exine ornamentation among the fl oral morphs investigated; Pire (1996;1997) palynologically studied the tribe Spermacoceae; Huysmans et al (2003) documented the pollen morphology of all of the genera of the tribe Rubieae occurring in Europe; Perveen & Qaiser (2007) described the pollen morphology of 50 species of the family occurring in Pakistan; Verellen et al (2007) undertook palynological studies of the tribes Naucleeae and Hymenodictyeae; and Cai et al (2008) studied the pollen grains of Asian species of this family.…”

Systematics, taxonomy and floristics of Brazilian Rubiaceae: an overview about the current status and future challenges

“…Accordingly, Delprete et al ( , 2005 ), as adopted by Adams (in Burger & Taylor 1993), Boom & Delprete (2002), , Delprete (2007, Dessein (2003), Dessein et al (2003Dessein et al ( , 2006a, Groeninckx et al (2009a,b), Lens et al (2009), De Vré (2000, and Vaes et al (2006). On the other hand, the generic delimitations adopted by Cabral, Bacigalupo and collaborators (Cabral 1991(Cabral , 1993Cabral et al 2006;Cabral & Bacigalupo 1997, 2000Pire 1997;Pire & Cabral 1992), maintaining Borreria and Spermacoce separated, are still commonly adopted in several floristic treatments in the Neotropics (but not in the Paleotropics). Also, recently Salas & Cabral (2010a) separated Tessiera DC.…”

“…Also, the generic delimitations within the Spermacoceae sensu lato are the most complex and debated within the Rubiaceae, and are still far from being resolved. In a series of multidisciplinary studies Bacigalupo, Cabral and collaborators (Cabral 1991(Cabral , 1993Cabral et al 2006;Cabral & Bacigalupo 1997, 2000Pire 1997;Pire & Cabral 1992) maintained Borreria G. Mey. and Spermacoce separated, and re-established Galianthe Griseb., where they transferred many species previously positioned in Borreria.…”

Development and cytochemistry of pollen and tapetum in Mitriostigma axillare (Rubiaceae)

“…The recent works by Andersson ( 1993) , Igersheim ( 1993b) , Persson ( 1993) , Huysmans et al ( 1994) , Endress et al ( 1996) , Jansen et al ( 1996) , Pire ( 1996Pire ( , 1997 , Stoffelen et al ( 1997) , Tilney & Van Wyk ( 1997) , , De Block & Robbrecht ( 1998) , Huysmans et al ( 1998b) and Piesschaert et al ( 1999a,b) contain references to at least 25 other publications on pollen morphology within the family.…”