the Arabian Peninsula and Socotra including new species, biological notes, and a new infrageneric classification
Author
Manning, John C.
Author
Goldblatt, Peter
text
Adansonia
2001
3
23
1
59
108
journal article
http://doi.org/10.5281/zenodo.5180119
1639-4798
5180119
2.
Romulea camerooniana
Baker
J. Bot. 14: 236 (1876)
; Goldblatt, Fl. Zamb. 12(4):
65 (1993), Fl. Trop. E. Africa,
Iridaceae
: 36
(1996). —
Type
:
Mann
2135,
Cameroon
,
Mt
.
Cameroon
(holo-, K!).
Romulea campanuloides
Harms, Bot. Jahrb. Syst.
19,
Beibl.
47: 28 (1894) M.
P
.
de
Vos
,
J
.
S
.
African Bot.
,
Suppl.
9: 207 (1972);
Fl.
S
.
Africa
7(2), fasc. 2: 52 (1983). —
Type
:
Volkens
782
,
Tanzania
,
Mt.
Kilimanjaro
(holo-,
B
!; iso-,
K
!)
.
Romulea thodei
subsp.
gigantea
M.P. de Vos, J. S.
African Bot. 21: 106 (1955)
. —
Romulea campanuloides
var.
gigantea
(M.P. de Vos) M.P. de Vos, J. S.
African Bot., Suppl. 9: 117 (1972)
; Fl. S.
Africa 7(2), fasc. 2: 37 (1983). —
Type
:
Rust
622
,
South Africa
,
Western Cape
,
Riversdale
(holo-,
B
)
.
Plants mostly
8-20 cm
, stem subterranean; corm obliquely pointed with a narrow basal ridge. Leaves (1)2-6, basal, filiform, narrowly 4-grooved, c.
1 mm
diam.; outer bracts with narrow or hardly visible membranous margins, inner bracts with narrow, colorless membranous margins. Flowers magenta or pink to white with a yellow cup, tepals elliptic, mostly
12-25 mm
long; filaments
4-7 mm
long, anthers
3-7 mm
long. Fruiting peduncles erect. Flowering: May- Feb.
A widespread African species,
Romulea camerooniana
occurs in rocky or grassy highlands, extending from the Drakensberg of
Eastern Cape Province
,
South Africa
, near Rhodes to
Kenya
,
Sudan
, and southern
Ethiopia
. Outlying populations occur in
Cameroon
in the west. The species was treated as
R
.
campanuloides
by DE VOS, but she has confirmed (pers. comm.) that
R
.
camerooniana
, described in 1876, is conspecific with
R
.
campanuloides
which was described only in 1894. Different chromosome numbers in the southern African and tropical African population counted, 2
n
= 22 versus 2
n
= 26 are puzzling (
DE VOS 1972
;
GOLDBLATT & TAKEI 1997
). Additional counts from tropical African populations are needed before this difference can be assessed.
DE VOS (1972
,
1983
) recognized two varieties of the species, the typical with flowers up to
25 mm
long and the style branches usually shorter than the anthers, and
var.
gigantea
with the flower
25-35 mm
long and the style branches usually exceeding the anthers. The ranges of the two varieties overlap completely. The large-flowered plants do not, we believe, merit taxonomic status. Most species of
Romulea
have smaller- and larger-flowered races and flower size alone should not be used to differentiate taxa unless the difference is extreme and without intermediates.