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Published In: Species Plantarum 1: 173. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library

Project Name Data (Last Modified On 6/2/2011)
Acceptance : Accepted
Project Data     (Last Modified On 6/3/2011)
Contributor Text: RUBINA AKHTER
General/Distribution: A genus of more than 200 species distributed in temperate and subalpine regions of the Northern Hemisphere. About 18 species are indigenous to Pakistan; 2 species are cultivated in gardens.


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Deciduous or evergreen shrubs, erect or prostrate (some exotic species twining). Winter buds with scales. Leaves petiolate or sessile, entire (lobed or connate at the base in non indigenous species). Flowers in axillary pairs or terminal capitate heads, peduncled or senile, often connate by their ovaries, bracteate and 2-bracteolate; bracteoles distinct or connate or sometimes absent. Calyx tube ovoid, limb 5-toothed or cup-shaped, deciduous or persistent. Corolla tubular, gibbous or not at the base; limb subequally 5-lobed or 2-lipped, the upper Up erect, 4-toothed, lower reflexed, entire. Stamens 5, inserted on the corolla tube, anthers usually exserted. Ovary 2-3-locular, style long filiform, stigma capitate, usually exserted. Fruit a berry; berries distinct or connate in pairs.

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1 Flowers in terminal capitate heads (2)
+ Flowers in axillary pairs (4)
2 (1) Rants erect
+ Rants climbing or scandent (3)
3 (2) Flowers pink-purple. Upper leaves not united at the base. Wild
+ Flowers orange-red. Upper leaves perfoliate or united at the base. Cultivated 20 Lonicera sempervirens
4 (1) Evergreen climbing or twining shrubs. Cultivated 19 Lonicera japonica
+ Deciduous erect or prostrate shrubs. Wild (5)
5 (4) Bracts large, ovate or boat-shaped, bracteoles absent (6)
+ Bracts linear or narrow oblong, bracteoles connate or distinct (9)
6 (5) Bracts boat-shaped, obovate-elliptic, peduncles (1-) 1.5 cm long (7)
+ Bracts flat, ovate, peduncle less than 1 cm long (8)
7 (6) Leaves and bracts glabrous with ciliate margin
+ Leaves and bracts hirsute and glandular hairy all over the surface 3 Lonicera hispida
8 (6) Pant more or less hispid all over the surface 1 Lonicera asperifolia
+ Plant glabrous to subglabrous, except leaf margin 2 Lonicera semenovii
9 (5) Corolla distinctly 2-lipped (13)
+ Corolla not 2-lipped, limb unequally 5-lobed (10)
10 (9) Rigid, more or less prostrate or dwarf shrubs. Leaves less than 2 cm long (11)
+ Erect shrubs. Leaves more than 2 cm long (12)
11 (10) Calyx teeth triangular to linear, conspicuous. Corolla not gibbous at the base 10 Lonicera myrtillus
+ Calyx limb minute, undulate. Corolla distinctly gibbous at the base
12 (10) Corolla purple. Berries red-black, on long peduncle up to 20 mm long
+ Corolla yellow. Berries blue, on short peduncle up to 10 mm long 12 Lonicera stenantha
13 (9) Branches hollow (14)
+ Branches solid (16)
14 (13) Peduncle longer than petiole. Borries red
+ Peduncle shorter than petiole. Berries white-translucent (15)
15 (14) Bracteoles free, glandular hairy. Corolla white, diffused with pink or purple
+ Bracteoles connate in pairs, not glandular. Corolla white, fading to yellow 6 Lonicera quinquelocularis
16 (13) Leaves densely pubescent, glandular on both surfaces. Bracteoles connate, cup-shaped 5 Lonicera hypoleuca
+ Leaves slightly pilose on the nerves. Bracteoles free, minute or obsolete (17)
17 (16) Berries connate, bracteoles minute or absent (18)
+ Berries free, bracteoles small, glandular hairy (19)
18 (17) Calyx teeth linear-lanceolate. Berries black
+ Calyx lobes obsolete, margin undulate. Berries red 15 Lonicera microphylla
19 (17) Leaves more than 8 cm long. Corolla ± 12 mm long, densely hairy 14 Lonicera webbiana
+ Leaves less than 4 cm long. Corolla ± 7 mm long, sparsely pubescent 16 Lonicera heterophylla
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