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Morphological and anatomical studies of Santolina chamaecyparissus L. (Asteraceae).I. Morphological characteristics
El-Sahhar, K.F.; Nassar, D.M.; Farag, H.M. (2011). Morphological and anatomical studies of Santolina chamaecyparissus L. (Asteraceae).I. Morphological characteristics. Research Journal of Agriculture and Biological Sciences 7(2): 294-302
In: Research Journal of Agriculture and Biological Sciences. INSInet Publication: Faisalabad. ISSN 1816-1561; e-ISSN 1819-5415, more

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Author keywords
    lavender cotton, morphological characteristics, Santolina chamaecyparissus L.

Authors  Top 
  • El-Sahhar, K.F.
  • Nassar, D.M.
  • Farag, H.M.

Abstract
    This is a detailed botanical study of two parts about lavender cotton (Santolina chamaecyparissus L.). In this paper, the morphological characters of plant are investigated. The studied plant material was obtained from the Experimental Station of Medicinal Plants, Fac. Pharmacy, Cairo Univ., Giza, Egypt as herbaceous stem cuttings of 25 cm long. Authentication of studied plant species was carried out at CAIM, Giza, Egypt. The field work was performed in the Experimental Station of Medicinal Plants, Fac. Pharmacy, Cairo Univ. for a period lasted from 20 October 2006 to mid-February 2009. The experiment included four replicates (a replicate 6×4 m, 10 ridges 60 cm apart and plants 50 cm distance in between). Two plants were designated in each of the four replicates (total of 8 plants) to follow up the vegetative characters at monthly intervals. Moreover, 40 plants (10 per replicate) were fixed to investigate the reproductive growth at 5-day intervals. Lavender cotton is an evergreen dwarf subshrub 40 cm high, silvery gray and much branched, often propagates from cuttings of tender new growth at branches terminal. The root system is adventitious. The main stem and plant height increased slowly in length during the whole growing season with a total increase of some 10 cm. The main stem increased in the mean time in both of its length and the number of internodes. The plant developed a great number of lateral branches of different degrees with a maximum of 13.8 primary branches and 77.0 secondary branches. Growth of plant is depending mainly on the lateral branches. Fresh and dry weights of both of the leafless shoot and leaves were followed up throughout the experiment period. Leaves are 1.5-2 cm long, simple, spatulate, pinnately lobed, alternately arranged and petiolate. Leaves are aromatic when crushed. Flowering stage started April- May. Toward mid-August the main stem terminated into an inflorescence followed by the lateral branches; i.e., each of the main stem and the lateral branches developed an inflorescence at their apices. Flowering continued throughout a period of four months, almost at summer. The peak of flowering took place throughout June- July. Plant developed a maximum of 126.3 inflorescences. The inflorescence is a simple racemose head developing solitary at shoot apices of main stem and lateral branches. Heads are globular and discoid surrounded by chaffy bracts. Flowers at blooming are little and yellow in colour. They are sessile, epigenous and actinomorphic.

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