Plantaginaceae

Plantain family
File:Scoparia dulcis at Kadavoor.jpg
Scoparia dulcis
Scientific classification
Kingdom:	Plantae
(unranked):	Angiosperms
(unranked):	Eudicots
(unranked):	Asterids
Order:	Lamiales
Family:	Plantaginaceae Juss.
Tribes
Angelonieae Antirrhineae Callitricheae Cheloneae Digitalideae Globularieae Gratioleae Hemiphragmeae Plantagineae Russelieae Sipthorpieae Veroniceae
Synonyms
Antirrhinaceae Pers. Aragoaceae D.Don Callitrichaceae Link nom. cons. Chelonaceae Martinov Digitalaceae Martinov Ellisiophyllaceae Honda Globulariaceae DC. nom. cons. Gratiolaceae Martinov Hippuridaceae Vest nom. cons. Littorellaceae Gray Psylliaceae Horan. Sibthorpiaceae D.Don Veronicaceae Cassel

Plantaginaceae, the plantain family, is a family of flowering plants in the order Lamiales. The type genus is Plantago L..

In older classifications it used to be the only family of the order Plantaginales, but numerous phylogenetic studies, summarized by the Angiosperm Phylogeny Group, have demonstrated that this taxon should be included within Lamiales.

Overview

The plantain family as traditionally circumscribed consisted of only three genera, Bougueria, Littorella, and Plantago. However phylogenetic research has indicated that Plantaginaceae s.s. (s.s. = sensu stricto, in the strict sense) were nested within Scrophulariaceae (but forming a group that did not include the type genus of that family, Scrophularia). Although Veronicaceae (1782) is the oldest family name for this group, Plantaginaceae (1789) is a conserved name under the International Code of Botanical Nomenclature (ICBN) and thus has priority over any earlier family name for a family including Plantago. Furthermore, the ICBN does not consider family names published before 1789 to be names eligible for conservation, thus ruling out Veronicaceae. The name Antirrhinaceae has been proposed for conservation over Plantaginaceae. In the meantime, the Angiosperm Phylogeny Group has accepted the name Plantaginaceae. However, Olmstead (2003) has chosen to use the name Veronicaceae.

Plantaginaceae s.l. (s.l. = sensu lato, in the broad sense) are a diverse, cosmopolitan family, occurring mostly in temperate zones. The group consists of herbs, shrubs and also a few aquatic plants with roots (such as the genus Callitriche). Being so diverse, the circumscription of this family is difficult to establish.

The leaves are spiral to opposite and simple to compound. Unusual in Lamiales is the absence of vertical partitions in the heads of the glandular hairs.

The structure and form of the flowers is variable. Some genera are 4-merous (i.e. with 4 sepals and 4 petals), such as Aragoa (but this one has 5 sepals); others are 5-8-merous, such as Sibthorpia. The flowers of most genera are polysymmetric. The corolla is often two-lipped. In some taxa, the androecium is formed before the corolla.

The fruit is a capsule that dehisces through the partitions between the cells.

A group of genera including Lindernia has recently been segregated as the family Linderniaceae, and recognized by Haston et al. 2007, (also known as LAPG II) as "Post-APG II family".

Genera

Bacopa monnieri in Hyderabad, India.

File:Achetaria azurea at Kadavoor.jpg

Achetaria azurea in Kerala

The enlarged Plantaginaceae s.l. / Veronicaceae consists of 90 genera and about 1,700 species. The largest genus is Veronica with about 450 species. Veronica also includes the genera Hebe, Parahebe and Synthyris, formerly often treated as distinct. All genera of Plantaginaceae were formerly included in Scrophulariaceae except where otherwise stated.

Tribe Angelonieae Angelonia Humb. & Bonpl. Basistemon Turcz. Melosperma Benth. Monopera Barringer Monttea Gay Ourisia Comm. ex Juss. Tribe Antirrhineae Acanthorrhinum Rothm. Albraunia Speta Anarrhinum Desf. Antirrhinum L. Asarina Mill. Chaenorhinum (DC.) Rchb. Cymbalaria Hill Epixiphium (Engelm. ex A.Gray) Munz Galvezia Dombey ex Juss. Gambelia Nutt. Holmgrenanthe Elisens Holzneria Speta Howelliella Rothm. Kickxia Dumort. Linaria Mill. Lophospermum D.Don Mabrya Elisens Maurandya Ortega Misopates Raf. Mohavea A.Gray Neogaerrhinum Rothm. Nuttallanthus D.A.Sutton Pseudomisopates Güemes Pseudorontium (A.Gray) Rothm. Rhodochiton Zucc. ex Otto & A. Dietr. Sairocarpus D.A.Sutton Schweinfurthia A.Braun Tribe Callitricheae Callitriche L. Hippuris L.

Tribe Cheloneae Brookea Benth. Chelone L. Chionophila Benth. Collinsia Nutt. Keckiella Straw Nothochelone (A.Gray) Straw Penstemon Schmidel Tonella Nutt. ex A.Gray Uroskinnera Lindl. Tribe Digitalideae Digitalis L. Erinus L. Tribe Globularieae Campylanthus Roth Globularia L. Poskea Vatke Tribe Gratioleae Achetaria Cham. & Schltdl. Adenosma R.Br. Bacopa Aubl. Benjaminia Mart. ex Benj. Boelckea Rossow Capraria L. Cheilophyllum Pennell ex Britton Conobea Aubl. Darcya B.L.Turner & C.C.Cowan Deinostema T.Yamaz. Dizygostemon (Benth.) Radlk. ex Wettst. Dopatrium Buch.-Ham. ex Benth. Fonkia Phil. Geochorda Cham. & Schltdl. Gratiola L. Hydranthelium Kunth Hydrotriche Zucc. Ildefonsia Gardner Leucospora Nutt. Limnophila R.Br.

Maeviella Rossow Mecardonia Ruiz & Pav. Otacanthus Lindl. Philcoxia P.Taylor & V.C.Souza Schistophragma Benth. ex Endl. Schizosepala G.M.Barroso Scoparia L. Sophronanthe Bentham Stemodia L. Tetraulacium Turcz. Tribe Hemiphragmeae Hemiphragma Wall. Tribe Plantagineae Aragoa Kunth Littorella P.J.Bergius Plantago L. Tribe Russelieae Russelia Jacq. Tetranema Benth. Tribe Sipthorpieae Ellisiophyllum Maxim. Sibthorpia L. Tribe Veroniceae Chionohebe B.G.Briggs & Ehrend. Detzneria Schltr. ex Diels Hebe Comm. ex Juss. Kashmiria D.Y.Hong Lagotis Gaertn. Neopicrorhiza D.Y.Hong Paederota L. Parahebe W.R.B.Oliv. Picrorhiza Royle ex Benth. Scrofella Maxim. Synthyris Benth. Veronica L. Veronicastrum Heist. ex Fabr. Wulfenia Jacq. Wulfeniopsis D.Y.Hong

Although GRIN includes Lafuentea Lag. in the Antirrhineae tribe,in the phylogenetic analysis of Fernández-Mazuecos et al. (2013) it was a sister to the Antirrhineae. as also noted by Albach (2005) For the time being it should be considered an outgroup.

Excluded genera

Artanema D.Don → Linderniaceae Bryodes Benth. → Phrymaceae Bythophyton Hook.f. → Phrymaceae Chamaegigas Dinter ex Heil → Linderniaceae Craterostigma Hochst. → Linderniaceae Dintera Stapf → Phrymaceae Encopella Pennell → Phrymaceae Legazpia Blanco → Linderniaceae Limosella L. → Scrophulariaceae

Lindenbergia Lehm. → Orobanchaceae Lindernia All. → Linderniaceae Micranthemum Michx. → Linderniaceae Microcarpaea R.Br. → Phrymaceae Picria Lour. → Linderniaceae Psammetes Hepper → Phrymaceae Rehmannia Libosch. ex Fisch. & C.A.Mey. → Orobanchaceae Torenia L. → Linderniaceae

Bibliography

• Vargas P, JA Rosselló, R Oyama, J Güemes. 2004 Molecular evidence for naturalness of genera in the tribe Antirrhineae (Scrophulariaceae) and three independent evolutionary lineages from the New World and the Old. Plant Syst Evol 249:151–172.

External links

• Treatment of Plantaginaceae in MOBOT

• Rahmanzadeh, R., K. Müller, E. Fischer, D. Bartels & T. Borsch. 2005. The Linderniaceae and Gratiolaceae are further lineages distinct from the Scrophulariaceae (Lamiales). Pl. Biol. ( Stuttgart) 7: 67-78.
• Mario Fernández-Mazuecos, José Luis Blanco-Pastor, and Pablo Vargas. A Phylogeny of Toadflaxes (Linaria Mill.) Based on Nuclear Internal Transcribed Spacer Sequences: Systematic and Evolutionary Consequences. International Journal of Plant Sciences, Vol. 174, No. 2 (February 2013), pp. 234-249 The University of Chicago Press. Article DOI: 10.1086/668790