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Published In: Species Plantarum 1: 473. 1753. (1 May 1753) (Sp. Pl.) Name publication detailView in BotanicusView in Biodiversity Heritage Library
 

Project Name Data (Last Modified On 5/12/2022)
Acceptance : Accepted
Project Data     (Last Modified On 5/21/2018)
Contributor Text: J. Osborne, R. Borosova & S. Landrein
Contributor Institution: Royal Botanic Gardens, Kew.
Synonym Text: Pygeum Gaertn. Fruct. Sem. Pl. 1: 218. t. 46. 1788.

 

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Trees or shrubs, deciduous or evergreen, rarely with thorns. Perulate winter buds present or absent. Leaves simple, alternate, penninerved, with entire or incised margins, usually with glands on the margins, at base of lamina or on the petiole. Stipules free or rarely connate, often caducous. Inflorescence terminal or axillary, racemose or reduced to an umbel, a fascicle or a solitary flower. Flowers pedicellate to subsessile, bisexual, 5-merous. Hypanthium cupular, usually caducous after flowering. Epicalyx absent. Sepals imbricate, usually caducous. Petals usually white, sometimes pink or red. Stamens 10-many in one or two whorls inserted on the hypanthium. Pistil 1, ovary superior, 1-loculed. Ovules 2, descendent, attached to the ventral wall. Style terminal, stigma capitate. Fruit a drupe or nuculanium (dehiscent drupe); mesocarp fleshy or dry, sometimes dehiscent; endocarp stony or woody, smooth or variously sculpted; seed with thin testa, without endosperm.

A genus of ca. 200 species distributed worldwide, including some cultivated species; represented in Pakistan by 16 species.

 

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1.

+

Flowers solitary, paired, in umbellate fascicles or in a raceme (up to 12 flowers).              

 

 

2

 

 

–        

Inflorescence racemose, many flowered (more than 12).                                  

 

 

16. P. cornuta

 

2.

+

Leaves convolute when young.

3

 

 

–        

Leaves conduplicate when young.

4

 

3.

+

Ovary and drupe glabrous .                                                               

1. P. cerasifera

 

–        

Ovary and drupe pubescent.

 

2. P. armeniaca

4.

+

Leaves usually lanceolate, ovary and drupe densely pubescent or tomentose (sometimes glabrous – in Prunus persica (nectarines), but then drupe more than 3 cm long).

 

 

 

 

 

5

 

 

–        

Leaves usually ovate          , elliptic or obovate, ovary and drupe mostly glabrous, or sparsely pubescent only at apex.

 

 

 

 

8

 

5.

+

Mesocarp fleshy and juicy, not splitting at maturity.

 

 

3. P. persica

 

–        

Mesocarp thin, dry or leathery splitting at maturity.

 

 

6

 

6.

+

Spiny shrub. Leaf blade up to 2 cm long.                                                   

6. P. brahuica

 

–        

Unarmed shrub or tree. Leaf blade longer than 2.5 cm.

 

 

7

 

7.

+

Endocarp 2.5-4 cm long, obliquely ovoid, compressed.

 

 

4. P. amygdalus

 

 

–        

Endocarp 1.4 cm long, ellipsoid, sub-orbicular in cross section                

 

5. P. kuramica

 

8.

+

Inflorescence a lax raceme usually 6-12 flowered and often with 2-3 small leaf-like bracts towards base.

               

       

 

15. P. mahaleb

 

 

–        

Flowers solitary, paired or in fascicles up  to 5 flowered, with or without leaf-like bracts at base.

 

 

 

9

 

9.

+

Leaves usually 3-16 cm long. Hypanthium urceolate or campanulate.

 

 

                                10

 

 

–        

Leaves usually 0.6-5 cm long. Hypanthium cylindric or campanulate (in P. rechingeri).

 

 

 

12

 

10.

+

Hypanthium campanulate, ca. 9 mm long. Bud scales caducous. Peduncle 0.5-1.5 cm long, sometimes only visible in fruit.

 

 

 

7. P. cerasoides

 

 

–        

Hypanthium campanulate or urceolate, ca. 5 mm long. Bud scales persistent. Flowers in sessile fascicles.

 

 

11

 

11.

+

Hypanthium urceolate. Petiole usually with 2-3 glands towards apex. Bracts scarious (not leafy), the inner recurved.

 

 

 

8. P. avium

 

 

–        

Hypanthium campanulate to broadly campanulate. Petiole usually eglandular. Bracts leafy, the inner erect at flowering.        

 

 

9. P. cerasus

 

12.

+

Leaf blades mostly 2-4 cm long, adaxially sparsely villous, abaxially densely villous especially on veins. Ovary densely villous, sometimes only towards apex.

 

 

 

 

10. P. tomentosa

 

 

–        

Leaf blades mostly 0.6-3.5 cm long (longer only in P. rechingeri), adaxially glabrous or sometimes minutely puberulent, abaxially glabrous to densely white tomentose. Ovary glabrous or villous only towards apex.

 

 

 

 

 

 

13

 

13.

+

Leaf blades abaxially densely white tomentose.

 

 

13. P. prostrata

 

 

–        

Leaf blades abaxially glabrous or puberulous.

 

 

14

 

14.

+

Ovary and drupe villous at least at apex. Hypanthium outside densely white tomentose. Leaf blades abaxially puberulous to glabrescent.

 

 

 

 

12. P. griffithii

 

 

–        

Ovary and drupe glabrous, hypanthium outside glabrous or slightly puberulous. Leaf blades abaxially glabrous.             

 

 

 

15

 

15.

+

Pedicels up to 3 mm long. Petals pink. 11.

 

11. P. jacquemontii

 

–        

Pedicels (5-)7-15 mm long. Petals white.

 

14. P. rechingeri

 
 
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