All Floras      Advanced Search
Login | eFloras Home | Help
Pakistan | Family List | Umbelliferae | Trachyspermum

Trachyspermum clavatum E. Nasir, sp. nov.

Plantae annuae, 15-20 cm altae, ramosae caule glabro. Folia 2-3 pinnatisec¬ta, segment is filiformibus. Umbellae foliis oppositae. Bracteae in involucro 4-5 lineares. Radii 4-8, 5-12 mm longi. Bracteolae in involucello 4-5 lineares vel lanceolatae, margine albae atque ciliatae. Petala alba ad exteriorem superficiem sparsim pubescentia. Fructus ovoidei, pilis clavatis dense obtecti atque squama¬tis, costis obtusis; stylopodium conicum; valleculae univittatae, vittis magnis; commissura bivittata; seminis superficies interior plana.

Annual, 15-20 cm tall, slender, branched. Stem glabrous. Leaves 2-3-pin¬natisect; segments filiform. Umbels leaf opposed. Involucre of 4-5 linear bracts, 2-4 mm long. Rays 4-8, unequal, 5-12 mm long. Involucel of 4-5 linear to lanceo¬late bractlets, margins white, ciliate. Calyx teeth obsolete. Petals white, outer surface sparsely pubescent. Fruit ovoid to suborbicular, 1 mm long, densely covered with clavate, scale-like hairs; ridges obtuse; stylopodium conical; styles c. 1 mm long; furrows 1-vittate; commissure 2-vittate. Inner seed face plane.

Type: W. Pakistan, Sind, Shikarpur Dick-Peddie 3 (RAW).

A plant of dry desert areas. This differs from the other 2 species in having fewer rays and club-shaped hairs on the fruit. In appearance it looks like Aphanopleura leptoclada but the leaf segments in this species are filiform and the hairs on the fruit are clavate and not capitate.


Related Objects  
  • Illustration (M.Y. Saleem)
  • Illustration

     |  eFlora Home |  People Search  |  Help  |  ActKey  |  Hu Cards  |  Glossary  |