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Published In: Species Plantarum 1: 437. 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)
General/Distribution: A large cosmopolitan genus with 60 species. Represented in Pakistan by 8 species.


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Annual or perennial herbs, often with glandular hairs. Leaves ovate to lanceolate, elliptic or obovate to oblong. Inflorescence of lax cymes or terminal cymose heads. Sepals 5, free, with scarious margins. Petals 5, bilobed at the apex. Stamens 10. Styles 3 or 5. Capsule cylindric, membranous, exserted from the calyx, dehiscing by twice the number of teeth as styles, teeth flat, revolute or with revolute margins. Seeds tuberculate.

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1 Styles 3. Capsule dehiscing by 6 teeth (2)
+ Styles 5. Capsule dehiscing by 10 teeth (3)
2 (1) Plants with ± branched stems, neither dichotomous nor divaricate. Sepals 4-5 mm. Calyx not inflated in fruit. Capsule teeth revolute at apex
+ Plant with dichotomous or divaricate branching. Sepals 8-12 mm. Calyx somewhat inflated in fruit. Capsule teeth flat 2 Cerastium dichotomum
3 (1) Leaves, stems and sepals not white tomentose (4)
+ Leaves stems and sepals white tomentose. Cultivated and occuring is an alien 8 Cerastium tomentosum
4 (3) Leaves obovate or lanceolate or lanceolate-elliptic, sessile or with a short cuneate base. Sepals less than 8 mm (5)
+ Leaves ovate to ovate-lanceolate, amplexicaule. Sepals 8-10 mm 6 Cerastium dahuricum
5 (4) Flowers in lax cymes. Petals 1½ times longer or shorter (C. fontanum subsp. trivale) than the sepals. Pedicels usually longer than the calyx (6)
+ Flowers in terminal cymose heads. Petals as long as or slightly shorter than the sepals. Pedicels usually shorter than the calyx 3 Cerastium glomeratum
6 (5) Flowers 3 or more in cymes. Capsule teeth with revolute margins (7)
+ Flowers 1-3. Capsule teeth flat 7 Cerastium pusillum
7 (6) Sepals 4.5-5.5 mm. Petals shorter than the sepals 4 Cerastium fontanum subsp. triviale
+ Sepals 6-8 mm. Petal 1½ times longer than sepals 5 Cerastium thomsonii
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