A foundation monograph of Convolvulus L. (Convolvulaceae)
Author
Wood, John R. I.
Department of Plant Sciences, South Parks Road, University of Oxford, OX 1 3 RB, UK & Honorary Research Associate, Royal Botanic Gardens, Kew
Author
Williams, Bethany R. M.
Department of Plant Sciences, South Parks Road, University of Oxford, OX 1 3 RB, UK & Department of Life Sciences, Natural History Museum, Cromwell Road, London SW 7 5 BD, UK
Author
Mitchell, Thomas C.
Plant Biodiversity Research, Technische Universitaet Muenchen, Maximus-von-Imhof Forum 2, 85354 Freising, Germany
Author
Carine, Mark A.
Department of Life Sciences, Natural History Museum, Cromwell Road, London SW 7 5 BD, UK
Author
Harris, David J.
https://orcid.org/0000-0002-6801-2484
Royal Botanic Garden Edinburgh, 20 A Inverleith Row, Edinburgh EH 3 5 LR, UK
Author
Scotland, Robert W.
Department of Plant Sciences, South Parks Road, University of Oxford, OX 1 3 RB, UK
robert.scotland@plants.ox.ac.uk
text
PhytoKeys
2015
2015-06-18
51
1
282
http://dx.doi.org/10.3897/phytokeys.51.7104
journal article
http://dx.doi.org/10.3897/phytokeys.51.7104
1314-2003-51-1
E76E3938E216FF804849B803C469FE14
576310
115.
Convolvulus grantii Balf.f., Nat. Hist. Sokotra 524. 1903. (Forbes 1903: 524).
Type.
SOCOTRA, Abd al Kuri Island,
Ogilvie-Grant exped.
13, 45, 46 & 50 (syntypes E!, LIV).
Description.
Herb with thickened woody taproot and a basal rosette; stems ascending to c. 30 cm, vegetative parts sericeous and with some spreading hairs. Leaves petiolate, dimorphic; rosette leaves 3.5-4.5
x
0.7-1.4 cm. obovate to oblanceolate-spathulate, obtuse to acute, margin entire to undulate, base attenuate onto the petiole; stem leaves 0.3-1.5(-3)
x
0.2-1 cm, acute, oblanceolate, oblong or elliptic, margin deeply sinuate, base attenuate; petioles 2-5 mm long. Flowers solitary, pedunculate; peduncles c. 3 mm long; bracteoles 2
x
0.75 mm, linear; pedicels c. 3.5 mm long; outer sepals 4-4.5
x
2-2.5 mm, ovate, acute or shortly acuminate; corolla 10-12 mm long, white or pinkish, lobed with broadly triangular lobes, midpetaline bands pilose; ovary glabrous; style glabrous, divided c. 2.5-3 mm above base; stigmas 4 mm long. Capsule glabrous; seeds glabrous. [
Miller and Morris 2004
: 517]
Distribution.
Endemic to Abd al Kuri Island in the Socotra archipelago (
Paulay
1899,
Smith & Lavranos
660;
Miller et al.
19032).
Notes.
Very distinct because of the rosette habit and small, sinuately-lobed stem leaves. The corolla is slightly larger than in
Convolvulus sarmentosus
and
Convolvulus hildebrandtii
. It is the most herbaceous of the three species.
Miller and Morris (2004
: 517) suggest that this species is an annual but this seems to be an error.