Convolvulus sabatius

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Convolvulus sabatius subsp. mauritanicus

Nomenclature

Accepted name/Authority/Place of publication:

Convolvulus sabatius Viviani (1824: 67) subsp. mauritanicus (Boissier) Murbeck (1923: 2)

Basionym: C. mauritanicus Boissier (1839: 418). Holotype: ALGERIA. Constantine, Sejourne, s.n. (G-Boiss)

Synonyms:

Convolvulus sabatius var. atlantius Ball (1878). Basionym: C. mauritanicus Boissier (1839: 418). Holotype: Morocco, in covalle Ait Mesan, Ball s.n., 13–16 May 1871 (P!)

Convolvulus sabatius f. genuinus Maire in Emberger & Maire (1929: 43), nom. non rite public.

Description

Habit:
Stems villous.
Leaves:
Leaves with petioles up to 3 mm long; lamina broadly oblong, elliptic or orbicular, up to 18 mm long × 18 mm wide; apices obtuse, occasionally emarginated or acute; pilose on lower leaf surface; upper surface variable, from glabrous to pilose.
Inflorescences:
Flowers solitary or rarely paired. Peduncles 5–25(–31) mm long, villous. Pedicels 2–10 mm long, villous. Bracteoles lanceolate to elliptic, 3–12 mm long × 1–3.5 mm wide.
Flowers:
Calyx lobes narrowly elliptic to lanceolate, 4.5–8 mm long × 1.5–3.5 mm wide; apices acute. Corolla 12–22 mm long, lilac-blue or blue-pink above, with a yellow centre and a white ring separating the two. Stamens with filaments 6–8 mm long on the shorter three and 7.5–10 mm long on the longer pair, variable for pubescence with some individuals apparently glabrous and others glandular pubescent for two thirds of total length; anthers 2–3 mm long on the longer filaments; 1.5–2.5 mm on the shorter filaments. Ovary narrowly conical, 1–1.5 mm long, white, glabrous. Style white, 3–4 mm long. Stigma lobes 4–5 mm long, longer than the style. Calyx lobes sparsely to densely villous.
Author:
Mark A. Carine & Lavinia Robba
References:

Phytotaxa 14: 1–21 (2010)

Biogeography, Ecology and Natural History

Distribution:

Morocco (western Rif, and the High and Middle Atlas mountains) and Algeria (Kabylie and Mts de Bibans areas of Algeria; fig. 2b). This subspecies is widely cultivated as an ornamental. A specimen from Rome (Heard s.n., BM) is referable to this subspecies. We were unable to see any material from Sicily, but C. sabatius is considered introduced there (Giardina et al. 2007) and it is possible that plants from Sicily are escapes from cultivation also referable to subsp. mauritanicus.

Ecology:

Dry, rocky, limestone slopes.

Phenology:

Flowering and fruiting April–August.

Author:
Mark A. Carine & Lavinia Robba
References:

Phytotaxa 14: 1–21 (2010)

Conservation

IUCN Conservation ranking:
LRlc: Least concern
Conservation Status:
Whilst this subspecies has a highly disjunct distribution, it is locally common or abundant and meets the criteria of Least Concern (IUCN 2001).
Author:
Mark A. Carine & Lavinia Robba
References:

Phytotaxa 14: 1–21 (2010)

Authorship for webpage

Editor:
Esmond Er
Contributors:

Mon, 2012-03-26 09:02 -- Esmond
Convolvulus sabatius subsp. sabatius

Nomenclature

Accepted name/Authority/Place of publication:

Convolvulus sabatius Viviani (1824: 67) subsp. sabatius

Holotype: ITALY. West Liguria, Capody Noli near Vada Sabatia, Viviani s.n. (GE; isotype: G-DC (microfiche!))

Description

Habit:
Stems villous.
Leaves:
Leaves with petioles up to 3 mm long; lamina broadly oblong, elliptic or orbicular, up to 18 mm long × 18 mm wide; apices obtuse, occasionally emarginated or acute; pilose on lower leaf surface; upper surface variable, from glabrous to pilose.
Inflorescences:
Flowers solitary or rarely paired. Peduncles 5–25(–31) mm long, villous. Pedicels 2–10 mm long, villous. Bracteoles lanceolate to elliptic, 3–12 mm long × 1–3.5 mm wide.
Flowers:
Calyx lobes narrowly elliptic to lanceolate, 4.5–8 mm long × 1.5–3.5 mm wide; apices acute. Corolla 12–22 mm long, lilac-blue or blue-pink above, with a yellow centre and a white ring separating the two. Stamens with filaments 6–8 mm long on the shorter three and 7.5–10 mm long on the longer pair, variable for pubescence with some individuals apparently glabrous and others glandular pubescent for two thirds of total length; anthers 2–3 mm long on the longer filaments; 1.5–2.5 mm on the shorter filaments. Ovary narrowly conical, 1–1.5 mm long, white, glabrous. Style white, 3–4 mm long. Stigma lobes 4–5 mm long, longer than the style. Calyx indument comprising of short, appressed hairs.
Author:
Mark A. Carine & Lavinia Robba
References:

Phytotaxa 14: 1–21 (2010)

Biogeography, Ecology and Natural History

Distribution:

Apparently confined to Cabo di Noli in Liguria

Ecology:

In stony pastures and rock fissures.

Phenology:

Flowering May–June.

Author:
Mark A. Carine & Lavinia Robba
References:

Phytotaxa 14: 1–21 (2010)

Conservation

IUCN Conservation ranking:
VU: Vulnerable
Conservation Status:
Given the extremely restricted distribution of this taxon, it meets the criteria for Vulnerable (IUCN 2001)
Author:
Mark A. Carine & Lavinia Robba
References:

Phytotaxa 14: 1–21 (2010)

Authorship for webpage

Editor:
Esmond Er
Contributors:

Mon, 2012-03-26 08:57 -- Esmond