Oxalis hirta/crassipes/articulata{Oxalis-TOW}

JFlintoff@aol.com JFlintoff@aol.com
Tue, 18 Nov 2003 08:58:44 PST
     Re the confusion of the names hirta,crassipes and articulata.  Finally 
had time to look at Alicia Lourteig's paper in Phytologia v.50 (1982) on Oxalis 
Section Articulatae.  The paper is written in Spanish which I do not really 
know, but I rely on my rather good background in Latin and French for the 

     Lourteig recognizes the following plants for this section: 
articulata,articulata ssp. rubra, articulata ssp. hirta f. crassipes,floribunda, floribunda 
ssp. ostenii, lasiopetala and monticola.

   Key to articulata and its subspecies:

               C. Pubescence dense, more or less straight. Sepals linear, 
calluses linear 
                   or 2-forked. Petals with straight pubescence in the 
exposed areas at                       
                   the tip
                                                       O. articulata ssp. 

              C. Pubescence short, scanty. Sepals elliptical with small 
oblong or 
                  punctiform calluses.  Petals with little pubescence.

                  d. Flowers rose-colored.  Sepals with 2 small calluses.

                                                      O.articulata ssp. rubra 
( St. Hil.)Lourteig

                  d. Flowers white. Sepals with 2-4-5 short calluses which 
are sometimes

                                                     O.articulata ssp. rubra 
f. crassipes 
                                                     (Urban) Lourteig.

     Oxalis articulata: described from a plant collected in 1767 in pastures 
in Montevideo, Uruguay. Abundant in Uruguay in the Province of Buenos Aires 
and much rarer in the Entre Rios and in Santa Fe (Argentina) as well in Rio 
Grane do Sul (Brazil).
    She studied specimens ( naturalized and cultivated ) in N and S 
Am.,Europe,S. Africa,Australia and NZ.

    Oxalis articulata ssp. rubra:  described from a plant found by St.Hilaire 
on the banks of rivers near the village Freguesia Nova in the southern 
Province of St Paul. Grows in moist places in the Province of Buenos Aires, rare in 
the south of Uruguay and Brazil.  Introduced in N. Am. and Europe and Egypt.

    Oxalis articulata ssp. rubra f. crassipes:  described from a plant 
cultivated  in Germany from " South America ".  Lourteig considers this a 
white-flowered mutation that has been maintained in cultivation.  It can be microstylous 
or mesostylous. Naturalized in Europe, Israel, US, Java and NZ

    O. hirta of course is from S Afr.

Jerry John Flintoff
Vashon Island,Washington,USA
Zone 8

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