ISSN:
1615-6110
Keywords:
Polygonaceae
;
Persicarieae
;
Rubrivena
;
Persicaria sect.Rubrivena
;
P. wallichii var.wallichii (=Polygonum polystachyum)
;
P. wallichii var.tomentosa
;
var. nov.
;
P. pinetorum
;
Anatomy
;
micromorphology
;
pollen morphology
;
cladistics
;
heterostyly
;
taxonomy
;
Flora of Himalaya
Source:
Springer Online Journal Archives 1860-2000
Topics:
Biology
Notes:
Abstract Morphological and anatomical characters (including pollen morphology) of the genusRubrivena are described. The phylogenetic relationships ofRubrivena, the putatively related genusKoenigia and the four sections of the genusPersicaria are analyzed by the application of cladistic methods.Persicaria s. str. turns out to be paraphyletic; however, inclusion ofRubrivena produces a clade which is marked by five synapomorphies (e.g., long styles, semitectate reticulate pollen grains and some seed characters). In order to eliminate the paraphyly ofPersicaria as well as to avoid nomenclatural changes of all taxa of sect.Cephalophilon, Rubrivena is included in the genusPersicaria. Sect.Rubrivena differs from the other sections in pollen morphology [granulated muri and 6 (–7)-zonocolpate aperture system] and inflorescence type (well-branched panicles). In addition, heterostyly is confirmed inPersicaria wallichii, and is reported here also forP. pinetorum. Keys and descriptions are provided for all taxa and a distribution map is given. Two species are illustrated by line drawings. One new variety,Persicaria wallichii var.tomentosa, is described. Five lectotypes are selected.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00937715
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