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A foundation monograph of Convolvulus L. (Convolvulaceae).

Wood JR, Williams BR, Mitchell TC, Carine MA, Harris DJ, Scotland RW - PhytoKeys (2015)

Bottom Line: Ten taxa are given new status and recognised at new ranks: Convolvulusnamaquensis (Schltr. ex.The status of various infraspecific taxa is clarified and numerous taxa are lectotypified.This account represents a new initiative in terms of taxonomic monography, being an attempt to bring together the global approach of the traditional monograph with the more pragmatic and identification-focussed approach of most current floras while at the same time being informed by insights from molecular systematics.

View Article: PubMed Central - PubMed

Affiliation: Department of Plant Sciences, South Parks Road, University of Oxford, OX1 3RB, UK ; Honorary Research Associate, Royal Botanic Gardens, Kew.

ABSTRACT
A global revision of Convolvulus L. is presented, Calystegia R.Br. being excluded on pragmatic grounds. One hundred and ninety species are recognised with the greatest diversity in the Irano-Turanian region. All recognised species are described and the majority are illustrated. Distribution details, keys to species identification and taxonomic notes are provided. Four new species, Convolvulusaustroafricanus J.R.I.Wood & R.W.Scotland, sp. nov., Convolvulusiranicus J.R.I.Wood & R.W.Scotland, sp. nov., Convolvuluspeninsularis J.R.I.Wood & R.W.Scotland, sp. nov. and Convolvulusxanthopotamicus J.R.I.Wood & R.W.Scotland, sp. nov., one new subspecies Convolvuluschinensissubsp.triangularis J.R.I.Wood & R.W.Scotland, subsp. nov., and two new varieties Convolvulusequitansvar.lindheimeri J.R.I.Wood & R.W.Scotland, var. nov., Convolvulusglomeratusvar.sachalitarum J.R.I.Wood & R.W.Scotland, var. nov. are described. Convolvulusincisodentatus J.R.I.Wood & R.W.Scotland, nom. nov., is provided as a replacement name for the illegitimate Convolvulusincisus Choisy. Several species treated as synonyms of other species in recent publications are reinstated including Convolvuluschinensis Ker-Gawl., Convolvulusspinifer M.Popov., Convolvulusrandii Rendle and Convolvulusaschersonii Engl. Ten taxa are given new status and recognised at new ranks: Convolvulusnamaquensis (Schltr. ex. A.Meeuse) J.R.I.Wood & R.W.Scotland, stat. nov., Convolvulushermanniaesubsp.erosus (Desr.) J.R.I.Wood & R.W.Scotland, stat. nov., Convolvuluscrenatifoliussubsp.montevidensis (Spreng.) J.R.I.Wood & R.W.Scotland, stat. nov., Convolvulusfruticulosussubsp.glandulosus (Webb) J.R.I.Wood & R.W.Scotland, stat. nov., Convolvuluscapituliferussubsp.foliaceus (Verdc.) J.R.I.Wood & R.W.Scotland, stat. nov., Convolvulushystrixsubsp.ruspolii (Dammer ex Hallier f.) J.R.I.Wood & R.W.Scotland, stat. nov., Convolvulushystrixsubsp.inermis (Chiov.) J.R.I.Wood & R.W.Scotland, stat. nov., Convolvulusrottlerianussubsp.stocksii (Boiss.) J.R.I.Wood & R.W.Scotland, comb. et stat. nov., Convolvuluscalvertiisubsp.ruprechtii (Boiss.) J.R.I.Wood & R.W.Scotland, stat. nov., Convolvuluscephalopodussubsp.bushiricus (Bornm.) J.R.I.Wood & R.W.Scotland, stat. nov. The status of various infraspecific taxa is clarified and numerous taxa are lectotypified. This account represents a new initiative in terms of taxonomic monography, being an attempt to bring together the global approach of the traditional monograph with the more pragmatic and identification-focussed approach of most current floras while at the same time being informed by insights from molecular systematics.

No MeSH data available.


1–7Convolvulustrabutianus1 leaf 2 bracteole 3 outer sepal 4 middle sepal 5 inner sepal 6 stamen 7 ovary and style. From Raymond 32 (RAB) 8–16Convolvulusrottlerianussubsp.rottlerianus8 leaf 9 bracteole 10 outer sepal 11 middle sepal 12 inner sepal 13 stamen 14 ovary and style 15 capsule 16 seed. From Wight s.n. (OXF) 17–25Convolvuluspilosellifolius17 leaves 18 bracteole 19 outer sepal 20 middle sepal 21 inner sepal 22 stamen 23 ovary and style 24 capsule 25 seed 17 from Bornműller 1530 (STU) 18–23 from Bornműller 1531 (W) 24–25 from Sintenis 516 (B) 26–34Convolvulusprostratus26 leaves 27 bracteole 28 outer sepal 29 middle sepal 30 inner sepal 31 stamen 32 ovary and style 33 capsule 34 seed 26–32 from Sieber s.n. (L) 33–34 from Letourneaux 280 (W) 35–43Convolvuluschondrilloides35 leaves 36 bract 37 outer sepal 38 middle sepal 39 inner sepal 40 stamen 41 ovary and style 42 capsule 43 seed 35–41 from Bornműller 7640 (W) 42–43 from Schmid 6469 (W) 44–51Convolvulussarmentosus44 leaf 45 bract 46 outer sepal 47 inner sepal 48 stamen 49 ovary and style 50 capsule 51 seeds. From Miller et al. 10221 (K).
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Figure 15: 1–7Convolvulustrabutianus1 leaf 2 bracteole 3 outer sepal 4 middle sepal 5 inner sepal 6 stamen 7 ovary and style. From Raymond 32 (RAB) 8–16Convolvulusrottlerianussubsp.rottlerianus8 leaf 9 bracteole 10 outer sepal 11 middle sepal 12 inner sepal 13 stamen 14 ovary and style 15 capsule 16 seed. From Wight s.n. (OXF) 17–25Convolvuluspilosellifolius17 leaves 18 bracteole 19 outer sepal 20 middle sepal 21 inner sepal 22 stamen 23 ovary and style 24 capsule 25 seed 17 from Bornműller 1530 (STU) 18–23 from Bornműller 1531 (W) 24–25 from Sintenis 516 (B) 26–34Convolvulusprostratus26 leaves 27 bracteole 28 outer sepal 29 middle sepal 30 inner sepal 31 stamen 32 ovary and style 33 capsule 34 seed 26–32 from Sieber s.n. (L) 33–34 from Letourneaux 280 (W) 35–43Convolvuluschondrilloides35 leaves 36 bract 37 outer sepal 38 middle sepal 39 inner sepal 40 stamen 41 ovary and style 42 capsule 43 seed 35–41 from Bornműller 7640 (W) 42–43 from Schmid 6469 (W) 44–51Convolvulussarmentosus44 leaf 45 bract 46 outer sepal 47 inner sepal 48 stamen 49 ovary and style 50 capsule 51 seeds. From Miller et al. 10221 (K).

Mentions: Spiny or unarmed shrubs or subshrubs or prostrate or erect herbs, stems often twining or trailing. Leaves alternate (rarely subopposite), simple, sessile or petiolate. Flowers variously arranged, solitary or in various kinds of inflorescence, usually cymose in structure although reduced to heads, flower pairs or other arrangements; each flower subtended by a pair of small bracteoles; calyx of 5 free sepals, these usually entire, slightly to very unequal, usually of two similar outer sepals, two similar inner sepals and an asymmetric middle sepal whose two halves are dissimilar; corolla funnel-shaped with a spreading limb and a short glabrous basal tube, the limb with five hirsute external midpetaline bands which terminate in a tooth or lobe; stamens 5, included, inserted at the top of the basal tube, filaments unequal, the basal part slightly dilated, glabrous or minutely glandular, the glands sessile or shortly stipitate, anthers equal, oblong to oblong-sagittate, pollen tricolpate, more or less spherical, colpi long and broad, exine thick; ovary usually ovoid, less commonly globose or conical, hirsute or glabrous, the base with a distinct disc, bilocular, each locule with 2 ovules; styles glabrous or hirsute, filiform divided upwards into 2 (rarely 3) arms, stigmas coextensive with style arms (very rarely slightly shorter), linear or, rarely, thickened upwards and ellipsoid or clavate. Capsule bilocular or by abortion unilocular, the dehiscence loculicidal or from the base, 4-seeded or less by abortion; seeds hirsute or glabrous, smooth tuberculate or obscurely ridged, one side convex and the other flat (see Figure 15: 34, for an example) unless capsule is 1-seeded when shape is ellipsoidal.


A foundation monograph of Convolvulus L. (Convolvulaceae).

Wood JR, Williams BR, Mitchell TC, Carine MA, Harris DJ, Scotland RW - PhytoKeys (2015)

1–7Convolvulustrabutianus1 leaf 2 bracteole 3 outer sepal 4 middle sepal 5 inner sepal 6 stamen 7 ovary and style. From Raymond 32 (RAB) 8–16Convolvulusrottlerianussubsp.rottlerianus8 leaf 9 bracteole 10 outer sepal 11 middle sepal 12 inner sepal 13 stamen 14 ovary and style 15 capsule 16 seed. From Wight s.n. (OXF) 17–25Convolvuluspilosellifolius17 leaves 18 bracteole 19 outer sepal 20 middle sepal 21 inner sepal 22 stamen 23 ovary and style 24 capsule 25 seed 17 from Bornműller 1530 (STU) 18–23 from Bornműller 1531 (W) 24–25 from Sintenis 516 (B) 26–34Convolvulusprostratus26 leaves 27 bracteole 28 outer sepal 29 middle sepal 30 inner sepal 31 stamen 32 ovary and style 33 capsule 34 seed 26–32 from Sieber s.n. (L) 33–34 from Letourneaux 280 (W) 35–43Convolvuluschondrilloides35 leaves 36 bract 37 outer sepal 38 middle sepal 39 inner sepal 40 stamen 41 ovary and style 42 capsule 43 seed 35–41 from Bornműller 7640 (W) 42–43 from Schmid 6469 (W) 44–51Convolvulussarmentosus44 leaf 45 bract 46 outer sepal 47 inner sepal 48 stamen 49 ovary and style 50 capsule 51 seeds. From Miller et al. 10221 (K).
© Copyright Policy - creative-commons-attribution
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4489078&req=5

Figure 15: 1–7Convolvulustrabutianus1 leaf 2 bracteole 3 outer sepal 4 middle sepal 5 inner sepal 6 stamen 7 ovary and style. From Raymond 32 (RAB) 8–16Convolvulusrottlerianussubsp.rottlerianus8 leaf 9 bracteole 10 outer sepal 11 middle sepal 12 inner sepal 13 stamen 14 ovary and style 15 capsule 16 seed. From Wight s.n. (OXF) 17–25Convolvuluspilosellifolius17 leaves 18 bracteole 19 outer sepal 20 middle sepal 21 inner sepal 22 stamen 23 ovary and style 24 capsule 25 seed 17 from Bornműller 1530 (STU) 18–23 from Bornműller 1531 (W) 24–25 from Sintenis 516 (B) 26–34Convolvulusprostratus26 leaves 27 bracteole 28 outer sepal 29 middle sepal 30 inner sepal 31 stamen 32 ovary and style 33 capsule 34 seed 26–32 from Sieber s.n. (L) 33–34 from Letourneaux 280 (W) 35–43Convolvuluschondrilloides35 leaves 36 bract 37 outer sepal 38 middle sepal 39 inner sepal 40 stamen 41 ovary and style 42 capsule 43 seed 35–41 from Bornműller 7640 (W) 42–43 from Schmid 6469 (W) 44–51Convolvulussarmentosus44 leaf 45 bract 46 outer sepal 47 inner sepal 48 stamen 49 ovary and style 50 capsule 51 seeds. From Miller et al. 10221 (K).
Mentions: Spiny or unarmed shrubs or subshrubs or prostrate or erect herbs, stems often twining or trailing. Leaves alternate (rarely subopposite), simple, sessile or petiolate. Flowers variously arranged, solitary or in various kinds of inflorescence, usually cymose in structure although reduced to heads, flower pairs or other arrangements; each flower subtended by a pair of small bracteoles; calyx of 5 free sepals, these usually entire, slightly to very unequal, usually of two similar outer sepals, two similar inner sepals and an asymmetric middle sepal whose two halves are dissimilar; corolla funnel-shaped with a spreading limb and a short glabrous basal tube, the limb with five hirsute external midpetaline bands which terminate in a tooth or lobe; stamens 5, included, inserted at the top of the basal tube, filaments unequal, the basal part slightly dilated, glabrous or minutely glandular, the glands sessile or shortly stipitate, anthers equal, oblong to oblong-sagittate, pollen tricolpate, more or less spherical, colpi long and broad, exine thick; ovary usually ovoid, less commonly globose or conical, hirsute or glabrous, the base with a distinct disc, bilocular, each locule with 2 ovules; styles glabrous or hirsute, filiform divided upwards into 2 (rarely 3) arms, stigmas coextensive with style arms (very rarely slightly shorter), linear or, rarely, thickened upwards and ellipsoid or clavate. Capsule bilocular or by abortion unilocular, the dehiscence loculicidal or from the base, 4-seeded or less by abortion; seeds hirsute or glabrous, smooth tuberculate or obscurely ridged, one side convex and the other flat (see Figure 15: 34, for an example) unless capsule is 1-seeded when shape is ellipsoidal.

Bottom Line: Ten taxa are given new status and recognised at new ranks: Convolvulusnamaquensis (Schltr. ex.The status of various infraspecific taxa is clarified and numerous taxa are lectotypified.This account represents a new initiative in terms of taxonomic monography, being an attempt to bring together the global approach of the traditional monograph with the more pragmatic and identification-focussed approach of most current floras while at the same time being informed by insights from molecular systematics.

View Article: PubMed Central - PubMed

Affiliation: Department of Plant Sciences, South Parks Road, University of Oxford, OX1 3RB, UK ; Honorary Research Associate, Royal Botanic Gardens, Kew.

ABSTRACT
A global revision of Convolvulus L. is presented, Calystegia R.Br. being excluded on pragmatic grounds. One hundred and ninety species are recognised with the greatest diversity in the Irano-Turanian region. All recognised species are described and the majority are illustrated. Distribution details, keys to species identification and taxonomic notes are provided. Four new species, Convolvulusaustroafricanus J.R.I.Wood & R.W.Scotland, sp. nov., Convolvulusiranicus J.R.I.Wood & R.W.Scotland, sp. nov., Convolvuluspeninsularis J.R.I.Wood & R.W.Scotland, sp. nov. and Convolvulusxanthopotamicus J.R.I.Wood & R.W.Scotland, sp. nov., one new subspecies Convolvuluschinensissubsp.triangularis J.R.I.Wood & R.W.Scotland, subsp. nov., and two new varieties Convolvulusequitansvar.lindheimeri J.R.I.Wood & R.W.Scotland, var. nov., Convolvulusglomeratusvar.sachalitarum J.R.I.Wood & R.W.Scotland, var. nov. are described. Convolvulusincisodentatus J.R.I.Wood & R.W.Scotland, nom. nov., is provided as a replacement name for the illegitimate Convolvulusincisus Choisy. Several species treated as synonyms of other species in recent publications are reinstated including Convolvuluschinensis Ker-Gawl., Convolvulusspinifer M.Popov., Convolvulusrandii Rendle and Convolvulusaschersonii Engl. Ten taxa are given new status and recognised at new ranks: Convolvulusnamaquensis (Schltr. ex. A.Meeuse) J.R.I.Wood & R.W.Scotland, stat. nov., Convolvulushermanniaesubsp.erosus (Desr.) J.R.I.Wood & R.W.Scotland, stat. nov., Convolvuluscrenatifoliussubsp.montevidensis (Spreng.) J.R.I.Wood & R.W.Scotland, stat. nov., Convolvulusfruticulosussubsp.glandulosus (Webb) J.R.I.Wood & R.W.Scotland, stat. nov., Convolvuluscapituliferussubsp.foliaceus (Verdc.) J.R.I.Wood & R.W.Scotland, stat. nov., Convolvulushystrixsubsp.ruspolii (Dammer ex Hallier f.) J.R.I.Wood & R.W.Scotland, stat. nov., Convolvulushystrixsubsp.inermis (Chiov.) J.R.I.Wood & R.W.Scotland, stat. nov., Convolvulusrottlerianussubsp.stocksii (Boiss.) J.R.I.Wood & R.W.Scotland, comb. et stat. nov., Convolvuluscalvertiisubsp.ruprechtii (Boiss.) J.R.I.Wood & R.W.Scotland, stat. nov., Convolvuluscephalopodussubsp.bushiricus (Bornm.) J.R.I.Wood & R.W.Scotland, stat. nov. The status of various infraspecific taxa is clarified and numerous taxa are lectotypified. This account represents a new initiative in terms of taxonomic monography, being an attempt to bring together the global approach of the traditional monograph with the more pragmatic and identification-focussed approach of most current floras while at the same time being informed by insights from molecular systematics.

No MeSH data available.