Generic Status and Lectotypifications for Gymnospora (Polygalaceae)

2013·3.1 MB·English

by  José Floriano Barêa Pastore

and Gymnospora
Generic
Status Lectotypifications for (Polygalaceae)
Jose Floriano Barea Pastore* and Pedro Luis Rodrigues de Moraes
em
Programa de Pos-Graduagao Botanica, Departamento de Ciencias Biologicas, Universidade
CEP
Estadual de Feira de Santana, Avenida Transnordestina, Bairro Novo Horizonte, 44.036—900,
Feira de Santana, Bahia, Brazil
*
Corresponding [email protected]
author:
Abstract. Polygala sect. Gymnospora Chodat (Poly- Moq.) F. B. Pastore and G. blanchetii (Chodat) F.
J. J.
A
galaceae) is recognized at the generic rank based on B. Pastore. third species originally included in
Polygala Gymnospora by Chodat, membra-
P.
sect.
new
F. B. Pastore with two combinations, G. nacea (Miq.) Gorts, is taxonomically excluded from
J.
blanchetii (Chodat) F. B. Pastore and G. violoides Gymnospora because lacks the diagnostic morpho-
J. it
& We
(A. St.-Hil. Moq.) F. B. Pastore. also present logical features. Gymnospora is endemic to Brazil,
J.
a taxonomic key for species identification and argue apparently restricted to forest margins and savannas.
that P. blanchetii Chodat should not be treated as a It is characterized by the following set of characters:
&
synonym of P. pedicellaris A. St.-Hil. Moq. and that pubescent pedicels, pubescent and free external
synonym
P. pedicellaris is better treated as a of P. sepals, calyx persistent in frutification, noncristate
&
violoides A. St.-Hil. Moq. (as G. violoides Thus, the carina, puberulent and chartaceous capsules, and
).
name
P. blanchetii (as G. blanchetii is established, in minute seed appendages or caruncles (Chodat, 1893;
)
keeping with its traditional treatment. Lectotypifica- Marques, 1984). The caruncle, which well
is
tions are provided for the following five names: P. developed in most other genera related to Polygala,
&
blanchetii, P. laxa Nees Mart., P. maritima Yell., can have a strong role in seed dispersal (Forest et ah,
and
P. pedicellaris, P. violoides. 2007). The reduction of the caruncle and the
and membranous Gym-
flattened fruits suggest that
Resumo. Polygala segao Gymnospora Chodat
(Poly-
nospora characterized by wind dispersal rather
is
than by
ants.
Gymnospora (Chodat) F. B. Pastore, baseado nas
J.
The Gymnospora
generic status for additionally
is
evidencias filogeneticas. Nos apresentamos duas
supported by phylogenetic evidence (Forest
et al.,
novas combinagoes G. blanchetii (Chodat) F. B.
J.
2007). Gymnospora, represented by
G. violoides, lies
&
Pastore e G. violoides (A. St.-Hil. Moq.) F. B.
J. DC
as sister to the Badiera -Hebecarpa (Chodat) R.
J.
uma
Pastore, chave taxonomica para identificagao
Abbott-Phlebotaenia Griseb. clade. All traditional
das duas especies e defendemos que P. blanchetii
subgenera Polygala more
sections or of are closely
um
como
Chodat nao deveria ser tratada sinonimo de
related to other genera than they are to Polygala, e.g.,
&
A. Moq., enquanto que
P. pedicellaris St.-Hil. P.
Acanthocladus Klotzsch ex Hassk. and Bredemeyera
como
melhor sinonimo de
pedicellaris e tratada P.
Willd. Thus, using the criterion of monophyly,
&
A. Moq. (como
violoides St.-Hil. G. violoides
).
Gymnospora cannot be maintained within the genus
nome
Assim, o P. blanchetii (como G. blanchetii) e
Polygala. Analysis of sequence data from
G.
estabelecido, mantendo o seu tratamento mais
tambem
tradicional. Sao indicados lectotipos para
material of the species deposited in
&
os seguintes nomes: P. blanchetii, P. laxa Nees
studied has been thus inadequate molecular
far for
maritima
Mart., P. Veil., P. pedicellaris e P. violoides.
studies (Pastore, pers. obs.). However, morphological
characters shared by both species of the genus
unmistakably support the similarity between species
Gymnospora.
of
Gymnospora (Chodat) F. B. Pastore, here treated After an analysis of the type collections of all
J.
we
as a genus, was traditionally considered by Chodat relevant names, conclude that there are two
(1893) and Paiva (1998), respectively, as a section or distinct species: Polygala blanchetii and P. violoides,
synonym
subgenus of Polygala L. (Polygalaceae). Currently, with P. pedicellaris treated as a of the latter.
Gymnospora comprised of two species that were This in agreement with the conclusions reached by
is is
&
Marques
included in Polygala, G. violoides (A. St.-Hil. (1984).
May
Novon 22: 304-306. Published on 24 2013. 10.3417/2010113
doi: