Nice discussion going on here. I missed it somehow. One more example of tautonym was Linaris linaris which was later changed to Linaris linifolia. Such names are valid in zoology though. Regards Pankaj
On Oct 7, 1:31 pm, Gurcharan Singh <[email protected]> wrote: > Satish ji > This is what I have been teaching my students for 35 years, since this > provides examples of tautonym (Malus malus), how basionym becomes > unapplicable and so on. Unfortunately (but correctly now) the name Malus > pumila is now restricted to Paradise apple, a wild species, smaller tree > with bright pink petals and fruit not larger than 1.5 cm. Our Table apple or > orchard apple is now known as Malus domestica. > > -- > Dr. Gurcharan Singh > Retired Associate Professor > SGTB Khalsa College, University of Delhi, Delhi-110007 > Res: 932 Anand Kunj, Vikas Puri, New Delhi-110018. > Phone: 011-25518297 Mob: 9810359089http://people.du.ac.in/~singhg45/ > > > > > > > > On Fri, Oct 7, 2011 at 10:43 AM, Satish Phadke <[email protected]> wrote: > > Yes Madhuri ji > > Thanks for reading it thoroughly. > > *Pyrus malus* is not an accepted name but is a synonym of *Malus pumila*. > > The correct genus of Apple is *Malus* > > > On Fri, Oct 7, 2011 at 10:35 AM, <[email protected]> wrote: > > >> ** I expected this at the start of week. Helps in understanding. > >> Thanks for details. > >> One doubt. Apple genus Malus or Pyrus or both or one new, one old? > >> Madhuri > > >> Sent from BlackBerry® on Airtel > >> ------------------------------ > >> *From: * Satish Phadke <[email protected]> > >> *Sender: * [email protected] > >> *Date: *Fri, 7 Oct 2011 10:02:32 +0530 > >> *To: *indiantreepix<[email protected]> > >> *Subject: *[efloraofindia:86371] ROSACEAE WEEK > > >> *FAMILY OF THE WEEK: ROSACEAE* > > >> There are over 25 genera and around 215 species in India mainly confined > >> to temperate Himalayas ascending up to 6000 meters. > > >> *Vegetative characters:* > > >> The plants are herbs, shrubs or trees several species of Rose and > >> *Rubus*have prickles. Sometimes, as in > >> *Prinsepia* and *Crataegus* the shrubs are armed with sharp spines which > >> are modified branches. Vegetative reproduction takes place in several ways. > > >> The leaves are alternate and simple, pinnately or palmately compound. The > >> stipules are usually present. > > >> *Inflorescence and flowers:* > > >> The flowers are rarely solitary or fascicled, but commonly they are > >> arranged in various types of definite or indefinite inflorescences. The > >> flowers are actinomorphic or sometimes strongly zygomorphic, bisexual or > >> unisexual,polygamous, pentamerous, hypogynous, peri or epigynous. The calyx > >> is of typically five basally connate sepals; the calyx tube is free or > >> adnate to the ovary. The aestivation is imbricate or valvate. In some > >> genera > >> an epicalyx is also present. The corolla is of generally five free petals > >> (there are numerous petals in cultivated species of Rosa) which are usually > >> imbricate in bud. The number of stamens is variable from one to many. They > >> are often in whorls. The filaments are distinct or sometimes monoadelphous. > >> The anthers are dithecous and introrse. A cushion shaped or ringlike nectar > >> secreting disc is present between the stamens and carpel. The gynoecium > >> shows much variation. There are ten different tribes of gynoecial > >> characters > >> and type of fruits. > > >> *Seeds:* > > >> The seeds are usually without endosperm. > > >> *Pollination and dispersal:* > > >> In most Rosaceae the nectar is collected in the receptacular tube and > >> easily licked by insects. The flowers are mostly protogynous and favour > >> cross pollination. > > >> The seeds are dispersed by animals and birds. > > >> *Examples:* > > >> *Rosa multiflora *(Rose) > > >> *Rosa damascene* > > >> *Rosa indica* > > >> *Rosa banksiae* > > >> *Rosa centifolia* > > >> *Pyrus mallus* (Apple) > > >> *Pyrus communis *(Pear) > > >> *Prunus persica *(Peach) > > >> *Prunus domestica * > > >> *Prunus institia *(Plum) > > >> *Prunus armeniaca *(Apricot) > > >> *Prunus amygdalous *(Almond) > > >> *Fragaria chiloensis* (Garden Strawberry) > > >> *Fragaria vesca* L. (Alpine strawberry) > > >> *Spiraea* > > >> *potentilla* > > >> *Brambles* > > >> *Cinquefoil* > > >>http://satishphadke.blogspot.com/2008/12/family-of-week-rosaceae.html > >> -- > >> Dr Satish Phadke > > > -- > > Dr Satish Phadke
