• Title/Summary/Keyword: Cladodromous

Search Result 2, Processing Time 0.017 seconds

A Systematic Study of Korean Rutaceae(I) - Mainly Treated with Venation and Stomatal Type - (한국산(韓國産) 운향과(芸香科)의 계통분류학적(系統分類學的) 연구(硏究)(I) - 엽맥(葉脈)과 기공형태(氣孔形態)를 중심(中心)으로 -)

  • Lee, Jeong Hwan;Kim, Sam Sik
    • Journal of Korean Society of Forest Science
    • /
    • v.82 no.3
    • /
    • pp.260-270
    • /
    • 1993
  • This study was carried out to clarifyed a taxonomical relationships of Rutaceae on the subfamily, genus and species level in Korea using venation pattern and stomata types. The results are summarized as follows : The leaf venation of the Rutaceae has revealed three major venation types. Semicraspedodromous, Brochidodromous and Cladodromous. The leaf ufmations type of the genus Evodia and Phellodendron were similar to Cladodromous type. They showed gradual evolution from brochidodromous type of Aurantioideae to cladodromous type of Toddaloideae. The stomata ypes were reconized Anomocytic and Actinocytic type, and epidermal cells were Ansio. Polygonal and Medium type. In the correlation analysis, there were highly significant correlation between frequency and length (r=-0.822), frequency and width (r=-0.780), and length and width(r=0.909) at 1% level.

  • PDF

Taxonomical Studies of the Genus Acer in Korea by the Morphological Characteristics of Stipules (탁엽(托葉)의 형태적(形態的) 특징(特徵)에 의한 한국산(韓國産) 단풍나무속(屬)의 분류학적(分類學的) 연구(硏究))

  • Park, Kwang Woo
    • Journal of Korean Society of Forest Science
    • /
    • v.67 no.1
    • /
    • pp.1-9
    • /
    • 1984
  • Taxonomical studies of the genus Acer in Korea (8 species, 3 varieties and 1 forma) were studied by the morphological characteristics of stipules. The results obtained were summarized as follows; 1) The stipules of the genus Acer were arranged oppositely with 4 - 10 stipules consisting of simple leaf, compound leaf and unifoliate compound leaf. The venation of stipules were cladodromous, basal reticulate, fibrous and palmately netted vein. The trichoma of stipules were glandula hair, glandular pubescent, sericeous, pilous, vinous, velutinous, tomentose, ciliate and lanate. As the morphological characteristics of stipules in the genus Acer established a strong point in the identification of species. 2) The species in the genus Acer in Korea were classified into six groups; (1) ginnala group (A. ginnala), (2) koreanum group (A. koreanum, A. japonicum, A. pseudosieboldianum var. koreanum), (3) mono group (A. mono, A, palmatum var. sanguineum, A. palamtum var. dissectum, A. palmatum var. dissectum f. aosidare), (4) negundo group (A. negundo), (5) palmatum group (A. palmatum), (6) platanoides group (A. platanoides, A. truncatum) by the morphological characteristics of stipules, 3) The stipules of platanoides group and negundo group were the least evolved types among the species in the genus Acer. 4) The stipules in the genus Acer were made the inner buds that were metamorphosed to the protected functional aspect by the evolution of petiols.

  • PDF