Further cleaning of the name pool in the New World Commelina (Commelinaceae), and notes on the African C. aquatica
Author
Hassemer, Gustavo
text
Phytotaxa
2020
2020-03-09
435
2
101
132
http://dx.doi.org/10.11646/phytotaxa.435.2.2
journal article
10.11646/phytotaxa.435.2.2
1179-3163
13875483
1.1.
Commelina benghalensis
von Linné (1753: 41)
,
nom. cons.
≡
Commelina cucullata
von Linné (1771: 176)
Type:
—
INDIA
.
S
.d.
,
Anonymous s.n.
(conserved
neotype
[designated by
Faden 1992: 341
] LINN-65.16!).
=
Commelina nervosa
Burman (1768: 18
, t. 7[3])
Type:
—(illustration) (
lectotype
,
designated here
) Plate 7(3) in
Burman (1768)
.
Notes:
—The protologue of
C. nervosa
(
Burman 1768: 18
)
provided the following information about the type: “
D. Outgaerden.
Habitat Cormandeli”.
I
have not been able to locate any original specimens for this name. Thus, in accordance with Arts. 9.3, 9.4 and 9.12 of the
ICN
,
I
designate the only extant original element,
i.e.
the illustration provided in the protologue (Plate 7[3] in
Burman 1768
) as the
lectotype
.
Field work and cultivation experiments conducted in several parts of
Brazil
evidenced that
C. benghalensis
is morphologically very variable. One notable aspect observed, which does not appear to be related in the literature relates to the staminodes: while the majority of specimens of the species have all flowers with three staminodes (as described in Hassemer 2019),
I
observed some plants producing flowers with two staminodes. This character is not geographically consistent, and in one plant flowers with both numbers of staminodes were observed, clearly indicating the lack of taxonomic value for this character. Furthermore, in Hassemer (2019: 90)
I
informed that the lateral stamens of
C. benghalensis
produce yellow pollen; this was a mistake, as those stamens produce white pollen instead.