Nomenclatural and taxonomic notes on Eugenia (Myrtaceae) from India
Author
Singh, Rajeev Kumar
text
Phytotaxa
2024
2024-03-05
638
3
268
276
http://dx.doi.org/10.11646/phytotaxa.638.3.6
journal article
301700
10.11646/phytotaxa.638.3.6
eb5a84ca-37c3-4add-8d61-ca7944470e6e
1179-3163
13213050
Recognition of
Eugenia macrosepala
as a distinct species
Eugenia macrosepala
Duthie (1879: 501)
,
non
Mattos (1989: 1),
nom. illeg
.
Type citation in protologue:—“N. KANARA, Stocks”.
Holotype
:—
INDIA
.
Karnataka
:
North Canara
,
s.d.
,
J.E. Stocks
20
(K000821512 [digital image!]).
Notes:—
Govaerts
et al.
(2008)
,
POWO (2023)
, and
WCSP (2023)
treated
Eugenia macrosepala
Duthie
as a synonym of
E. roxburghii
DC.
, but in
Indian
floras
E. macrosepala
is treated as an accepted species (
Saldanha 1996
,
Kulkarni 2001
,
Rathakrishnan 2020
,
Shareef & Kumar 2020
). After studies of
type
specimens, other herbarium specimens and fresh collections from northern Western Ghats, it is found that
E. macrosepala
(
Figure 4
) differs from
E. roxburghii
in having bigger leaves, 6−15 × 2.5−6.0 cm, chartaceous or subcoriaceous, lateral nerves 10−15 pairs (vs. 2.5−7.0 ×
1−3 cm
, coriaceous, 7−10 pairs in
E. roxburghii
), flowers axillary and lateral from the leafless axils, solitary or in pairs, sessile (vs. axillary and terminal, 2−4 together or fascicled cymes, pedicels
0.7−1.5 cm
long), bracteoles longer than the calyx lobes (vs. shorter), calyx lobes longer than the petals, lanceolate (vs. shorter, ovate), petals ovate-oblong, pubescent (vs. elliptic, glabrous), drupes 2.5−3.0 cm across, subglobose, pubescent (vs.
1.1−1.4 cm
, globose, glabrous), and seeds 1−2 (vs. seeds 2−3). These morphological differences are taxonomically very important to distinguish
E. macrosepala
as a distinct species.