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Pakistan | Family List | Umbelliferae

Psammogeton Edgew. in Proc. Linn. Soc. 1:253. 1845. Boiss., Fl. Or. 2:1078. 1872; C.B. Clarke in Hook. f., Fl. Brit. Ind. 2:719. 1879; Wagentiz, Die. Gattung Psammogeton in Ber. Deutsch. Bot. Gesell. 69: 227-238. 1956; Hiroe, Umb. Asia 1: 37.1958.

Plants annual. Leaves 1-2-pinnate. Bracts and bractlets scarious, whitish, linear to lanceolate or oval. Rays 5-15. Calyx teeth obsolete. Petals white to rose coloured, bilobed. Fruit ovoid, densely hairy to hispid; primary and second┬Čary ridges distinct; vittae solitary under the secondary ridges; commissure 2-vittate. Inner seed face plane to slightly concave.

A genus of 6 to 8 species found in the dry desert areas of Iran, Central Asia, Afghanistan, W. Pakistan and India.


1 Stem and leaves glabrous   Psammogeton biternatum
+ Stem glabrous to pubescent. Leaves pubescent   Psammogeton canescens
       
2 (2) Hairs on fruit 1-1.5 mm long. All parts of plant pubescent   (2)
+ Hairs on fruit less than 0.5 mm long. Stem glabrous to pubescent   (3)
       
3 (2) Stem pubescent. Hairs on fruit glochidiate   Psammogeton cabulicus
+ Stem glabrous to puberulous. Hairs on fruit T-shaped   Psammogeton stocksii

Lower Taxa

Related Synonym(s):


 

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